Are Daddy Longlegs Spiders?  (Re: 8 Animal Misconceptions Rundown)

Are Daddy Longlegs Spiders? (Re: 8 Animal Misconceptions Rundown)


In my animal misconceptions video I casually
mentioned that daddy long legs aren’t spiders and received a ton of comments asking for
clarification or suggesting that it’s not that simple, so I feel the need to clear things
up a bit, but first, a disclaimer: If images of spiders make you uncomfortable,
1) you shouldn’t have clicked on this video and 2) you should stop watching, right, about
now. Cutest, spider ever. Right? When editing the video, I decided to cut out
a daddy-longleg discussion, and now you’ll see why. To answer the question ‘are daddy longlegs
spiders?’ we first need to know, what are spiders? And for that we need the biological
classification system you should have learned in high school. Spiders are in the animal kingdom – which
is a pretty broad class of life and not helpful in narrowing things down. The phylum that
concerns us are the arthropods which are a subset of animals with external skeletons,
segmented bodies, and jointed limbs. The arthropods with exactly eight legs and
two body segments are in a class called arachnids – where the name arachnophobia comes from
– and while often used to mean fear of spiders, there are plenty of arachnids that are not
spiders, such as scorpions and mites. The true spiders, are a subset of Arachnids
in the order Araneae. What defines these as spider are their fangs and the poison glands
within them, their numerous eyes and their spinnerets that allow them to make webs. Now that we have a spider checklist on to
the second problem: the name ‘daddy longlegs’ means different things in different places. In Australia this cellar spider is called
a daddy longlegs – which as an eight-legged, multi-eyed, web-spinning member of Araniee
makes it an official spider. It also produces venom, but then so does everything in that
bloody country. Where I grew up this is a daddy longlegs (sometimes
called a harvestman). They have just two, soulless eyes, can’t
web sling and lack fangs and poison glands and so fail the spider checklist and are in
a different order called Opiliones. It was these I had it mind while making the
video. To make things more complicated, in my adoptive
UK the british call this Crane Fly daddy long legs. Unlike the closely related Opiliones
and Araniee the Crane Fly isn’t an arachnid but an insect, the class of arthropods with
six legs and three body segments. And, as if the name wasn’t ambiguous enough
at this point, there is also a plant called daddy long legs. For taxonomical completeness the plant is
over here a different kingdom. But, because of the way life works even this plant is distantly
related to those other daddy longlegs because plants and animals are both eukaryotes which
means that their cells have complex structures, most notably a nucleus. So, to fully the first question: there are
four daddy long legs, three animals, two arachnids, but only one spider among them.

Homework Hotline: Millipede and  Madagascar Hissing Cockroach

Homework Hotline: Millipede and Madagascar Hissing Cockroach


(CRAIG) ALL RIGHT AND NOW WOULD LIKE TO WELCOME TIM FROM THE ROCHESTER MUSEUM AND SCIENCE CENTER TO THE
SHOW HEY TIM. (TIM) HI GUYS. (DONNA) HI TIM. (TIM) GOOD TO SEE YOU AGAIN.(DONNA) BEFORE YOU TOUCH THOSE THINGS. (TIM) YEAH I WASHED MY HANDS. (CRAIG) SO YOU GOT HISSING COCKROACHES. WHERE ARE THOSE THINGS FOUND? BESIDES ON THAT LOG. (TIM) MADAGASCAR. (CRAIG) ALRIGHT. (TIM) THAT’S WHY THEY’RE CALLED MADAGASCAR HISSING COCKROACHES AND THAT IS ON
THE EASTERN OFF THE EASTERN COAST OF AFRICA. SO THEY’RE PRETTY
NEAT AND THEY’RE. (DONNA) OH I HEARD THAT. (CRAIG) YUPP YOU CAN HEAR IT. (DONNA) THAT’S WEIRD. (TIM) HISSING. THEY ACTUALLY HISS BY PUSHING AIR THROUGH THE SEGMENTS IN THEIR ABDOMEN. WHERE THEY
BREATH THROUGH. SO THEY’RE THE ONLY INSECTS THAT REALLY
DO THAT. YOU GET OTHER INSECTS THAT MAKE NOISE USUALLY THROUGH
SOMETHING LIKE STRANGULATION OR RUBBING BODY PARTS GATHER. HE DOES IT AND HE’S GOT THREE DIFFERENT ONES. THAT ONE WAS
BECAUSE HE WAS STARTLED. THEN HE’S GOT ONE FOR MATING. TRYING TO ENTICE THE FEMALES AND THEN ONE FOR FIGHTING. WHEN HE’S GOING UP AGAINST ANOTHER MALE FOR
DOMINANCE. (DONNA) NOW HE’S PRETTY BIG. HOW LARGE WILL THEY GROW AND
HOW LONG IS A TYPICAL LIFESPAN? (TIM) ACTUALLY HE’S SMALL COMPARED TO THE FEMALE. IF WE TAKE A LOOK AT
THE FEMALE HE’S ABOUT, HE’S JUST UNDER THREE INCHES. THE FEMALE
WILL GROW TO ABOUT THREE INCHES LONG. THE MALE BE TWO TO THREE
INCHES AND YOU CAN TELL THE DIFFERENCE BECAUSE THE FEMALE THE CROWN DOESN’T HAVE ANY HORNS
AND THE MALE DOES. (DONNA) OKAY YEAH I SEE THAT. (CRAIG) SO WHAT DOES THEIR DIET
CONSIST OF? WHAT ARE THESE GUYS GONNA EAT? (TIM) THESE GUYS EAT JUST ABOUT
ANYTHING. THEY LIKE THINGS, THESE GUYS EAT DOG FOOD. FOR THE PROTEIN BUT THEY CAN
LIVE ON VEGETATION JUST LIKE ANY OTHER INSECT ROACH THAT GOES AROUND. THEY’LL CHEW ON ANYTHING THAT’S ON THE GROUND. SOMETIMES
EVERY NOW AND AGAIN A LITTLE CEREAL OAT CEREAL THEY’RE LIKE YOU
KNOW JUST CHANGE PACE. SO THEY ENJOY THAT AND THEY DO PRETTY WELL WITH IT. (DONNA) ALL RIGHT NOW YOU TALKED ABOUT THE HORNS BUT ARE THESE THINGS
STICKING OUT ANTENNAS? (TIM) THOSE ARE ANTENNAS. THOSE ARE THE ANTENNAS AND THE FEMALES HAVE A LITTLE BIT LONGER THAN
THE MALE. THIS ONE HE’S LOST. HE MIGHT A LOST ONE IN THE FIGHT. AND BECAUSE HE WAS IN WITH OTHER
ONES AND SO HE TURNED AROUND WHEN I WAS ACTUALLY PICKING A
ROACH I WAS PICKING THEM UP TO SEE WHO WOULD HISS AND HE HISSED THE MOST SO I’M FIGURING HE PROBABLY THE DOMINANT ONE. (CRAIG) RIGHT. (TIM) MAYBE HAD A
LITTLE FIGHT GOING ON. (CRAIG) RIGHT SO YOU’VE TALKED ABOUT THESE
GUYS MAKING NOISES. WHAT OTHER KINDS OF INSECTS ARE GOING TO
MAKE SOME NOISES AS WELL? (TIM) WELL YOU GET YOU GET CRICKETS THAT’LL MAKE NOISES. (CRAIG) AND THAT’S RUBBING THEIR HIND LEGS TOGETHER. (TIM) THE CICADAS THEY MAKE NOISES. SO THEY
THERE’S A LOT OF DIFFERENT ONES BUT ONLY THESE HISSING
COCKROACHES ARE SOME TWENTY SPECIES OF HISSING COCKROACHES
ON MADAGASCAR. SO THEY ACTUALLY
MAKE THAT SAME NOISE. (TIM) NOW YOU ALSO BROUGHT
ANOTHER. (TIM) I DID. (DONNA) IS IT AN INSECT OR SOMETHING FOR US TO SEE. (TIM) HE’S A POD. HOLD ON. (DONNA) HE’S A POD. HE’S A TOUGHY TO GET A HOLD OF. (DONNA) NOW THESE GUYS WON’T GET OUT WITHOUT THE LID ON WILL THEY? (TIM) NO. THEY WONT GO FAR. LET ME SEE IF I CAN FIND HIM. HOLD ON. THERE WE GO. (CRAIG) HE’S GOT A NECKLACE. (DONNA) AWW HE’S GOT A NECKLACE ON. (TIM) WELL IT’S MARDI GRAS. (CRAIG) AH MARDI GRAS. (DONNA) WHAT CREATURE IS THIS AND WHERE CAN WE FIND IT. (TIM) THIS IS OUR MILLIPEDE. OOPS GOT IT ON THE BACK END. THAT’S ALRIGHT. BUT THAT’S ALRIGHT. I WON’T TELL YOU HOW IT GOT THE BEADS BUT THE KICK LINE IN THE CONGA WAS TO DIE FOR. BUT THIS IS THAT OTHER INSECT. IT’S WELL NOT AN INSECT. IT’S A POD. IT’S GOT.. IT’S A MILLIPEDE IT DOESN’T HAVE
A THOUSAND LEGS. IT’S ONLY GOT ABOUT FOUR HUNDRED. AND BUT HE’S REALLY PRETTY COOL
THEY’RE THEY’RE ACTUALLY ONE OF THE FIRST TO COME OUT OF THE
OCEAN. DURING ABOUT FOUR
HUNDRED AND FIFTY MILLION YEARS AGO SO FIRST TO TAKE THE LAND
WHERE THE MILLIPEDES AND CENTIPEDES. (CRAIG) WHAT CHARACTERIZES THIS AS A POD COMPARED TO AN INSECT? (TIM) THE NUMBER OF LEGS. (CRAIG) SO INSECTS HAVE SIX. (TIM) SIX AND THE NUMBER OF BODY PARTS BECAUSE HE’S GOT SEVERAL SENTIMENTS AND IF YOU NOTICE IF
WE CAN GET A GOOD LOOK AT HIM OR HOLD HIM YOU CAN SEE THE THE LEGS MOVE. (DONNA) HOW THEY MOVE YEAH. (TIM) THE FIRST FEW SEGMENTS WILL HAVE ONLY TWO LEGS ON EACH SECTION
AND THEN FROM FIVE BACK THEY’LL HAVE FOUR LEGS ON EACH SECTION.
(CRAIG) INTERESTING (TIM) AND GO AHEAD. (DONNA) HOW
LARGE IS HE GOING TO GET? (TIM) THIS ABOUT AS BIG AS HE’LL GET. SIX
MAYBE SEVEN INCHES. HE’S NORTH AMERICAN SO HE’S
YOUR FIND, CRAIG YOU SAID YOU FOUND SOME. (CRAIG) OH WE WERE IN LETCHWORTH WITH THE BOY SCOUTS AND THE GUY HAD ONE A LITTLE BIT SHORTER THAN
THAT BUT IT WAS ABOUT AS BIG AROUND AS THAT ONE. (TIM) WELL SAME KIND OF LOOK TO IT SO YOU FIND THEM ALL OVER BUT MOSTLY THEY’RE
TROPICAL THEY BECAUSE WELL AS MOST INSECTS OR MOST
PODS LIKE THIS THEY’LL LIVE BETTER IN TROPICS, WARM WEATHER. SAME WAY WITH THE ROACHES. THE
ROACHES WILL DIE IN COLD WEATHER BECAUSE IT WON’T BE ABLE
TO BREATH. (CRAIG) OKAY. (DONNA) NOW DOES THE MILLIPEDE HAVE ANY DEFENSE MECHANISMS? YOU TALKED ABOUT THE HISSING FOR THE
COCKROACHES. (TIM) AS A MATTER OF FACT IT DOES. IF YOU COULD SEE ON THE ENDS OF
MY FINGERS YOU’LL SEE THE
LITTLE YELLOW AND HAVE THEY SECRETE FROM THEIR SEGMENTS. AND
IT’S USUALLY SOME KIND OF A TOXIN FOR HUMANS IT’S NOT
ANYTHING MORE THAN IT DISCOLORS THE SKIN. (CRAIG) WE KNOW FIRST AID
SO. (TIM) BUT YEAH SO I’M I’M GOOD TO GO I’M SURE. BUT FOR OTHER
INSECTS IT’S A TASTE SOME OF THEM HAVE SOME MILLIPEDES HAVE REALLY TOUGH TOXIN SO AS SO AS THEY A TASTE IT ITS A NEURO TOXIN. THEY’LL STOP BITING IT AND THEN BUT IT ALSO THESE GUYS
ROLL UP INTO A BALL TO TRY TO PROTECT THEIR LEGS AS THEY GO
ALONG AS WELL. (DONNA) WELL TIM I WOULD
SHAKE YOUR HAND BUT YOU HAVE THAT THING. (CRAIG) I WILL THANKS TIM. (DONNA) IF YOU WOULD LIKE TO LEARN MORE
ABOUT THE ROCHESTER MUSEUM AND SCIENCE CNTER AND SEE OTHER
VIDEOS ABOUT ANIMALS VISIT OUR WEBSITE HOMEWORK HOTLINE DOT ORG.
AND NOW STAY RIGHT THERE WE’LL BE BACK IN A SECOND.

STARTING A NEW FIRE ANT COLONY | REBIRTH OF THE FIRE ANTS

STARTING A NEW FIRE ANT COLONY | REBIRTH OF THE FIRE ANTS


Last week, we said goodbye to one of the OG
ant colonies of this channel. It was with great sadness that we discovered
that the Fire Nation, my five year old fire ant colony, had died out. But with great endings come new beginnings,
and I can’t wait to introduce to you the heirs to the Fire Nation’s throne. AC Family, today we meet our brand new fire
ant queen and her first pioneering generation of fire ant workers. Please SUBSCRIBE to my channel, and hit the
BELL ICON. Welcome to the AC Family. Enjoy! Behold! The great successors of the Fire Nation. What you’re seeing here is a new fire ant
queen with her first generation of worker ants. These ants are about to receive something
truly special, so do keep on watching until the end to witness something magical this
colony is about to receive. Now in this test tube setup, we have the queen,
so gorgeous. We also have the first set of workers, which
are known as nanitics. You can also see eggs, larvae, and pupae. Check out that light coloured worker ant which
recently eclosed from its pupal stage. In a few days, it will be moving around like
the other workers, and its exoskeleton properly hardened. I find this fledgling fire ant colony to be
so cute, and I feel they’ll quickly rise in numbers to take their place as the mighty
fire ant colony of our Antiverse. Now, I was thinking. What should we name this colony? Should we call them Fire Nation 2.0 or the
Neo Fire Nation, or perhaps the Phoenix Nation, as was popularly suggested in last week’s
video. Let me know what you think we should name
this great fire ant colony in the making in this ipoll here. Thank you, AC Council for your input. You’ll notice the queen lays super still. She’s actually resting and preserving her
energy, and for good reason. She’s currently not in her best form at
the moment. You see, the queen hasn’t eaten a real,
full meal in weeks and has gone through quite a lot over the past month. So get this, after a queen mates during her
nuptial flight, she breaks off her wings, and goes off to seal herself within a chamber
in the soil, known as a claustral cell. In this claustral cell, the queen does not
eat and subsists entirely off energy stores in her back muscles which previously powered
her wings for flight. She lays eggs and once these eggs hatch into
larvae, she feeds the larvae a self-made nutritious soup, again created from her back muscle stores,
which she regurgitates up for the larvae to eat. The larvae grow, develop into pupae, then
eclose into adult worker ants. So, this queen here is starving. She literally raised these workers and larvae
off her own body tissues this whole time. Sound pretty crazy but it what she’s built
to do. It’s important she doesn’t move around
too much, though. She must preserve her energy at all costs
if she wants to survive to perpetuate the colony. The success of the entire colony now lies
in the hands of the nanitics. The most important first task of these workers
is to wander out into the world, and bring back some food so the queen can finally eat
after all these weeks of fasting, and AC Family, guess what: We’re about to make that moment
happen now. Let’s feed them! AC Family, I can’t wait for us to see this! Using a toothpick I placed a tiny drop of
honey into their test tube setup. Now let’s watch! Instantly a couple ants discovered the honey. Then a third came along to drink. Then a fourth… a fifth… and a sixth came
to drink. A seventh ant came along and an eighth. It was awesome to see that the honey was such
a hit! You also have to remember that these ants
have only known the self-made regurgitated soup from their mother, the queen. I imagine, as great as that must taste, this
honey must truly be blowing their minds right now! Wouldn’t you think? The queen began showing signs of excitement. I think she had been informed that her nanitics
had found something tasty just beyond. A few minutes later, workers with full social
stomachs came back to regurgitate the goods. At first, I saw the workers were feeding other
workers. This process of regurgitation and mouth to
mouth feeding is called trophallaxis, something all eusocial insects like bees and termites
do to distribute food among members of a colony. Then I noticed a worker feeding a larva. I bet that larvae was loving the honey. When the worker was done feeding it, you could
actually see the honey in the larva’s stomach through its semi-transparent body. How neat right? And then finally, a worker moved in to give
their starving queen mother her very first meal in weeks. Just awesome! More and more workers continued to feed their
queen via trophallaxis. She accepted their offerings graciously. For me, watching a queen and nanitics of a
starting ant colony receive their very first meal is truly one of the most beautiful things
to witness in the hobby, one of those ant keeping joys. Over the next few days, I will continue to
offer our fledgling fire ant colony here various small meals, like a cricket leg or a mealworm
head. The days of fasting and subsisting on the
queen’s own body tissues are now over, as the workers will be the ones feeding the queen
and brood from now on. With the queen properly nourished and a growing
army of worker ants caring for her and her future brood, she no longer needs to do anything
else but perform her primary duty of laying eggs. I think it’s super cool for us to be able
to start this awesome new journey with this new fire ant colony of ours. I think it’s extra cool because it’s been
years since we’ve been able to start an ant colony from scratch like this on the channel,
and I think it would be great for us to watch how a massive fire ant colony of the likes
of our late Fire Nation, emerges from such humble beginnings. Given ample food and resources, this species
literally explodes in population, so I anticipate that this colony will need to move out of
here in a week or two. I plan on moving them first into a Hybrid
Nest, and then once they outgrow that, move them into a terrarium perhaps. But here’s the thing about moving them into
the Selva de Fuego, the old home of our Fire Nation. A lot of you spotted that the supermajor in
last week’s episode had a blood sucking mite on it! It freaked me out because it meant that mites
could have been responsible for wiping out the Fire Nation, and not old age of the queen. But, it could also be possible that the blood
sucking mites came after the queen had died and the population started to dwindle and
weaken. Whatever the case, I’m not going to take
risks, and I have decided that I am going to have to ditch the Selva de Fuego and create
an entirely new vivarium from scratch. I still have a few months to plan before this
colony will be big enough to move in a terrarium anyway. Though the past few weeks have been quite
rough, this new fire ant colony brings me new hope. Though they don’t seem like it yet, this
cute ant colony will soon rise to become the savage, aggressive, and powerful fire ant
kingdom we once knew in the Fire Nation, and until then I’ll continue to nurture them
and film their evolution, every step of the way. Thank you for watching. It’s ant love forever. AC Family, are you as excited as I am about
this new fire ant colony? I look forward to building new memories together
with them and learning about them. I wonder if they have a different personality
than the Fire Nation. So much is in store ahead so if you haven’t
yet, SMASH that SUBSCRIBE button and BELL ICON now and hit ALL so you get notified at
every upload, because I believe notifications seem to be broken but the Youtube support
team is on it. Also don’t forget to hit the LIKE button
every single time including now. It would really mean a lot to me. Thank you, guys! AC Inner Colony, I have left a hidden cookie
for you here, if you would like to watch some extended play footage of our new young fire
ant colony. And now it’s time for the AC Question of
the Week. Last week, we asked: Which was your favourite memory of the Fire
Nation? Congratulations to Patrick Tierney who answered: My favorite moment in the Fire Nation’s
history was when they were escaping their enclosures. Congratulations Patrick, you just won a free
Ultimate Ant Keeping handbook from our shop! In this week’s AC Question of the Week we
ask: What is the name of the process of mouth-to-mouth
food transfer in eusocial insects? Leave your answer in the comments section
and you could also win a free e-book handbook from our shop! Hope you could subscribe to our channel as
we upload every Saturday at 8AM EST. Please remember to LIKE, COMMENT, SHARE, and
SUBSCRIBE if you enjoyed this video, to help us keep making more. It’s ant love forever!

Group recruitment in golden tail sugar ant

Group recruitment in golden tail sugar ant


Hey I have finally been able to take a video
of my favorite behavior of one of my favorite ant species that you can find here in Australia
in Sydney its name is Camponotus aeneopilosus also known as the Golden tail sugar ant. And you can see on this video that there is
one first ant a small one that is leading a group of workers, so if you count there
are about seven workers only following that first ant the ant leading that group is called
a scout. It forages quite randomely around the nest
and as soon as it finds something it comes back straight to the nest, start bumping into
other workers, and when it feels that other workers are motivated to join her on a new
trip to the food source it stats running away from the nest leaving a very light pheromone
trail that does not last long behind, and the other workers try to follow that scout
using visual informations, so by looking at this ant and using of course the light pheromone
trails that the first worker leaves behind. This behavior is very interesting and it allows
these ants to recruit other foragers very very quickly which is of course very useful
when the resources are scarce. Another advantage of this technique of recruitment
is that by not leaving strong pheromone trails behind them, the other ants cannot use the
trails left by this species to find the same food source. Of course it sometimes happens that the leader
loose a few workers on the way, but they are able to go to the food source very quickly
and that is the essential part for the colony, so it is not such a big loss. In that case, the food source was not very
glamorous, sorry about that, it was hum… bird droppings. It is a quite common food source for ants. As you can see on this video the Camponotus
were not the first one on that food source and you can see the small black ants that
are everywhere here. They are probably Iridomyrmex or Tapinoma
ants. They are very very efficient foragers, which
also explains why it is important for ants like Camponotus to find ways to recruit other
workers very quickly. Thank you for watching I hope you enjoyed
this video.

5 Disgusting Facts About Cockroaches

5 Disgusting Facts About Cockroaches


five disgusting facts about cockroaches the cockroaches one annoying and
troublesome insects that we humans still aren’t used to and probably never will
be this is even though roaches have adapted
to hang around us since forever and seems to be enjoying the relationship
there are lots of interesting and disgusting facts about roaches that many
of us do not know for example they are super bugs that can survive for weeks
with vital parts missing they love our ears and they can bite us when we
stopped leaving food for them cockroaches are tough survivors and getting rid of
them is ridiculously difficult cutting of a roach head does not even count as
death sentence because the pest can survive for weeks without it the roach
only does later because it doesn’t have a mouth with which to eat or drink
cockroaches can live without their hands because they do not use their heads the
same we do we humans died soon after decapitation because our bodies lose lots
of blood and blood pressure cockroaches do not have much blood or
blood pressure to begin with so their necks just clot and they continue
roaming around as if nothing happened even if we humans managed to find a way
around the massive loss of blood and blood pressure we would still be finished
because the nerves in our bodies need to be connected to our brains to survive we
also need our noses and mouths to breathe the bodies of roaches work
independently of their tiny brains they also breathe through small holes on
their bodies all these features allow cockroaches to
live for weeks without their heads they only succumb to hunger and thirst
because they have not figured out a way to eat and drink with their skin
interestingly the head of cockroach remains alive for hours after decapitation as evidenced by its moving antennae in
fact the head can remain alive for longer if it is refrigerated and given
enough nutrients according to one common cockroach fact
that has been appearing on the Internet this creatures hated when human touch
them so much that they often flee to start cleaning themselves of disgusting
human contact but it’s not what you think
cockroaches hate humans or anything else touching them because that simple
contact can be dangerous for their existence to be clear
cockroaches hate being around humans as much as humans hate being around this
disgusting insects cockroaches naturally flee from larger creatures human or not
because they know that any contact with larger creatures will often lead to
death in fact contact with almost any organism could have some residue on the
roach that could be detrimental to its survival in the case of humans it is the
natural oils that we unwittingly leave on anything we touch that oil can also
disrupt how the cockroach body works most affected are the antennae they seem
unremarkable to us but they are crucial to the cockroach survival they work as
the creatures nose and are required for smelling food and finding potential mate
those oils will reduce the pest ability to smell which is bad for the roach cockroaches are smarter than we think
they can even make decisions in groups just like many other insects and animals
several years back Dr. Jose Halloy of the free university of brussels belgium
conducted a study to observe how roaches think he put several of them inside a
dish with three homes and waited to see how they will divide themselves Dr.
Halloy observed that the roaches first came together touching each other with
their antennae after some time they divided themselves into the homes
equally for example 50 roaches split into two groups of 25 each when they
were given three homes with a capacity of 40 roaches each one grouped lived in
the first home and the other group lived in the second the third home was
abandoned all 50 roaches also opted to live in a single home when they were
given three homes that would accommodate over 50 roaches each termites and cockroaches belong to
the same order Blattodea so termites are technically cockroaches
interestingly termites were not considered cockroaches until 2018 before
then termites belong to the order I Isoptera
studies into the similarities between both creatures began in 1934 when
researchers observed that their guts contains similar microbes a research
paper published in 2007 finally confirmed that they were relatives and
recommended that the taxonomic rank be adjusted to put them under the same
family actually the paper suggested that the order Blattodea for cockroaches
and Isoptera for termites should be considered sub families under a new
family called Termitidae several scientists with entomological Society of
America refused this suggestion at the time because they did not want termites
to be considered cockroaches besides another termitidae family already
existed in the taxonomic rank and could cause confusion with the new suggested
termitidae family the ESA later backtrack and agreed to categorize
termites as cockroach under putting it to a vote in 2018 ESA reclassified the
termite order. Isoptera as a sub order and place it under the
cockroach Blattodea order instead of creating a new family as the 2007
paper suggested that does not mean you should call
termites cockroach though termites should be called termites and cockroaches
cockroaches remember that saying about knowing a tomato is a fruit but not
putting it into fruit salad a similar idea applies here knowledge is knowing
that a termite is a cockroach wisdom is not calling it a cockroach cockroaches love sugar they will give
you a thumbs up if you leave candy cakes fruits and juice with high sugar content
lying uncovered around your home leave raw sugar lying around and they will love
you forever pest control businesses discovered this in 1980s they observed
that sprinkling sugar in a location would leave roach milling around in no
time the businesses use that to their advantage and started to bait roaches with
glucose laced with insecticide the meal killed the roaches when they returned to
their homes other roaches who opened eat the remains of the dead which is not
surprising because these creatures will eat almost anything the scavenging
roaches also died as the body of the dead roaches still contain the poison
this went on for some time until the cockroach learned that sugar was
killing them cockroaches later began to resist this sugar their senses quickly
adjusted to detect sweet sugar as bitter many pest control businesses
discovered that too and replaced the glucose with fructose a different sugar
the roaches quickly caught on and started avoiding fructose as well
scientists traced this surprising switch to millions of years ago when roaches
first developed the ability to detect sweet but poisonous parts of certain
plants they ate as bitter that scale was genetically suppressed when they started
to live around humans and only returned when humans started to poison their food you

Ranger Nick: Why So Many Ant Mounds Right Now?

Ranger Nick: Why So Many Ant Mounds Right Now?


[Upbeat Music]
[Dr. Nick Fuhrman/UGA Professor, “Ranger Nick”] Well as we start this new year off, maybe
the holidays have you driving around maybe across the interstate looking out across some
farm pastures and seeing what look like little mounds of soil, maybe fire ant mounds, and
it had you wondering, “Why am I seeing more of them right now? What is the deal with that?” I thought I’d explore that with you this month
and introduce you to somebody who knows quite a bit about this, and that’s Dr. Will Hudson. Dr. Hudson, so nice to meet you. [Dr. Hudson]
Good to see you Nick [Ranger Nick]
I appreciate you spending some time with us today. I want to talk about fire ants, and I want
to talk specifically about a particular mound that we’re standing in front of today. I often see that maybe after a rain at night
or after the temperatures have been maybe a little cooler, I’ll walk out in my yard
and find fire ant mounds that were not there a day or two ago, and I think that maybe I’m
just seeing things. What is the deal with that? Why are we seeing more of those like this
one after a rain at night, after a cooler night? Why is that? [Dr. Will Hudson/UGA Professor of Entomology]
Well, particularly if the conditions have been real hot and dry before that, the rain
provides the ants with the perfect conditions to rebuild their mound. The colony’s always been there, well not always,
but it was there before. [Ranger Nick]
Oh, okay. [Dr. Hudson]
The dirt that you see suddenly pop up is just the dirt that they moved out of the tunnels
and the chambers that are underground where they live, and that’s why suddenly they have
a mound built that wasn’t apparent to you before. The colony itself has been there for months. [Ranger Nick]
Under the soil. [Dr. Hudson]
Under the soil. [Ranger Nick]
I can’t see them, okay. [Dr. Hudson]
They had a mound, but then either they got rained on, or it got stepped on, or it got
so dry that the soil wouldn’t hold its structure, and as soon as the soil conditions are right
they can build that mound back up. [Ranger Nick]
Interesting. And sometimes in South Georgia or the southeast
where there’s more sandy soils, maybe those mounds aren’t as high I guess because the
clumping ability of that soil is not there. [Dr. Hudson]
Right, you can pile clay up higher than you can pile sand. [Ranger Nick]
Yeah. [Dr. Hudson]
That’s the bottom line on that. [Ranger Nick]
Now let’s look at, if you don’t mind, let’s look at this one together. And I just happen to have my son’s little
shovel with me today. Here’s this mound. I’m noticing in this mound all of these little
particles of sand and clay are the same size. You’re saying, thinking to us, that they are
pushing these particles up out of the ground after it rains. They’re cleaning out what has washed down. Is that what you’re saying? [Dr. Hudson]
Right, and they’re not pushing, they’re carrying them one at a time in their jaws. They’ve got no other, they’ve got no pockets,
so they’re carrying them one at a time up there. [Ranger Nick]
Yeah and this, and I can kind of see some holes in there, and I just kind of want to
dig in and see what … and look at this, look at what we’re able to see with these
smaller holes and these tunnels. Now these guys must be down low because it’s
been cooler at night, and they’re down low getting warm. Is that what you’re saying? [Dr. Hudson]
Right, they’ll be up at the top of the mound. If it were a bright, sunny day today they
would probably be up there basking not on the outside but just inside. You can see the tunnels, all of these right
in here are places where they can come up. As the sun warms the soil, they warm up too
because they’re cold blooded. They’re trying to get to a place where the
temperature is most comfortable for them. [Ranger Nick]
Which that’s so interesting, and that dynamic of those ants under the ground, that’s what
I want to talk with you about next is going and looking at the culture of these ants. And I promise I won’t put my hand in there,
but I do want to kind of move some things around with you and see some of those areas
of work. So let’s go there next. [Ranger Nick]
Okay, so we’ve had a cooler night. We’ve had a rainy night. The mound is now showing up outside of the
ground, and I’m looking at this. And Dr. Hudson, we’re looking at this together,
I’m going to just kind of dig into this a little. Before I disturb it too much … Oh my gosh,
and the beautiful caverns. First of all, these little guys with wings,
are they ants? I’ve never seen an ant with wings. [Dr. Hudson]
Well yes. They are ants. Those are the ones that are the, what we call
reproductives. That’s the males and females that will mate. Then the new queens will start the next colony. [Ranger Nick]
Wow, so and they’re mating, but they have to fly to mate? I mean, that’s why they have the wings? [Dr. Hudson]
They fly up into the air. If you see it, it’s usually late in the afternoon,
it looks like a little plume of smoke coming up. [Ranger Nick]
Wow, okay. [Dr. Hudson]
And they mate in the air, and they fall back to the ground. Males die. [Ranger Nick]
Okay [Dr. Hudson]
The females lose their wings and go into the ground and create a small chamber, start laying
eggs, and that becomes the next colony. [Ranger Nick]
Wow, okay. [Dr. Hudson]
That why I say if you’re talking about fire ants, you need to think of it as a colony
not as individual ants. [Ranger Nick]
Interesting. So now okay, so I’m looking at this, and I
know we’re looking up close on the camera too. So we’ve got the ones with wings which we
now know are reproductive ants, but there’s other ones that are bigger, and I see one
moving a little granule of soil. Bigger ones and then there’s smaller ones. Is that an age difference, or do they have
different hierarchy in their family there, their colony? [Dr. Hudson]
Ants as all insects, once they become adults they don’t grow anymore. Their skeleton is on the outside so they can’t
grow anymore, so. [Ranger Nick]
I’ve got to do this. Sorry, I just have to look in here. I have to see what’s going on. [Dr. Hudson]
No, that’s fine. [Ranger Nick]
Look at this. Look at that. [Dr. Hudson]
There are different sizes of individuals. Some of that is related to the jobs that they
do in the colony, and some of it is just variation in size just as people are different sizes. [Nick]
Okay [Dr. Hudson]
So you get some variation that way. [Ranger Nick]
Interesting. Now I would have loved to have talked to some
of these ants today, Dr. Hudson, to find out their perspective on what they think of us
humans disturbing their mounds and everything, but I’ve got to tell you. With a little boy at home and a little girl
at home as well that will soon be walking, we go out in the yard, and we have a thing
of that ant spray that we buy from the local hardware store. Miles and I spray that stuff all over the
mound, and we say, “We have killed the ants.” Then a couple of days later we see them again. What are we doing wrong? [Dr. Hudson]
Well, you saw the structure of the mound. It goes a long way down into the dirt, and
if all you do is spray the surface you’re not beginning to get down to the area where
the money is. [Ranger Nick]
Yeah, yeah. [Dr. Hudson]
Which is you’ve got to kill the queen. If you don’t affect the queen, you can’t control
the colony. So you’ve got to put that insecticide, if
you’re going to treat an individual mound, you have to put it in enough water that it
carries the insecticide all the way down to the bottom of the mound where the queen is. [Ranger Nick]
And how much water are we talking? [Dr. Hudson]
At least a gallon of water per average size mound. [Ranger Nick]
Wow, okay. [Dr. Hudson]
Because there’s a lot of volume of soil in there, and you’ve got to get all the way down
through it. [Ranger Nick]
Okay. Now what if I’ve got a bigger area of land
I’m going to tackle? Maybe the bucket isn’t going to be enough. What do you do then? [Dr. Hudson]
If you’re up to, if you’re over an acre, for sure over an acre, then you need to be using
a bait. If you put it out twice a year … There used
to be a guarantee on some brands that you would have no mounds. [Ranger Nick]
Okay. [Dr. Hudson]
Right? That’s pretty good. [Ranger Nick]
All right, yeah. [Dr. Hudson]
If you’re in smaller than an acre then if you’re treating mounds individually, that’s
a thing for retired people. [Ranger Nick]
Okay….”Laughing” [Dr. Hudson]
Because you’re going to be doing that constantly, and you never win that. [Ranger Nick]
Yeah. [Dr. Hudson]
So you need to treat the whole area. [Ranger Nick]
Excellent. [Dr. Hudson]
And if you treat the whole area with a broadcast spray or spread granules out you can suppress
ants, and suppress is all you’re going to do with that sort of treatment for anywhere
from a few weeks to a couple of months. [Ranger Nick]
Interesting. [Dr. Hudson]
And that’s it. [Ranger Nick]
Well I got to tell you, I don’t know about the folks at home, I have learned so much
about what I’m doing wrong. I’ve learned so much about the culture of
the ant colony. Dr. Hudson, thanks so much for today. I so appreciate it. Such an interesting topic. I can’t wait for the folks at home to see
it. You all know what to do. When you’re at home checking things out online
maybe about fire ants in your area, hop on over to the Farm Monitor Facebook page and
check that out. While you’re on Facebook, check out the Ranger
Nick Facebook page and see what I’ve got going on in my world. Until next time, as I always say Dr. Hudson,
for the Farm Monitor I’m Ranger Nick reminding you that enthusiasm is contagious. So pass it on. You all, thanks so much for watching. We’ll see you right back here again next month. See you. [Fast paced music]

MY GREATEST ANT COLONY DIED | RIP FIRE NATION

MY GREATEST ANT COLONY DIED | RIP FIRE NATION


Last week, during our full ant room tour update
video, we fed my biggest ant colony in the Ant Room, our OG fire ant colony, we call
the Fire Nation, some sweet jelly and an entire cockroach. This was actually the first time I offered
them food on this open rock platform in quite awhile, just so we could see them for filming. Ordinarily, I’d drop their food directly
into the thick vegetation around their mothernest where the ants would finish off their meals
in private. But this feeding would be different, and it
wasn’t long before I noticed something quite strange. This was what the feeding site looked like
several hours later. Usually, the fire ants would be swarming all
over this food, but here as you can see, there were only a few ants. Where did all my fire ants go? And what I saw a few hours after that, brought
a sick feeling to the pit of my stomach. There! Did you see it? Wild feral black crazy ants and ghost ants
were inside the Fire Nation’s territory. This never happens! The territorial pheromones of the fire ants
were enough to scare all feral ants in my home from coming anywhere near this tank. Now, they were seen inside! Something was terribly wrong. What happened to the Fire Nation? Where was my most beloved and biggest pet
ant colony of my entire collection? There was only one way to find out. Please SUBSCRIBE to my channel, and hit the
BELL ICON. Welcome to the AC Family! Enjoy! I couldn’t believe what I was seeing! Ghost ants and black crazy ants entering the
Selva de Fuego, the Fire Nation’s massive paludarium kingdom. I even spotted one black crazy ant making
away with a dead fire ant worker! What had happened here? Well, I got to the bottom of it all and I
explain what I believe happened so keep on watching until the end. I couldn’t believe that just a few months
ago the colony looked like this. Millions of ants, swarming above ground, in
celebration of their annual nuptial flight event, where reproductive males and females
hope to mate with those of other fire ant colonies. Of course, seeing as I don’t have any other
fire ant colonies in my room, all the reproductive queen hopefuls and males, ended up not mating
with anyone and dying out within the territories like they do every year at this time. It was shocking to see a colony which I’ve
had for over 4 yrs go from millions to just a few. This fire ant colony was definitely the most
popular ant colony on this channel, and I would say was responsible for taking this
channel and all of us AC Family, where we are toda y. The Fire Nation has accumulated over 153M
views collectively. Their first break out viral video My Fire
Ants Are Planning an Escape currently has over 39 million views. Shortly after, they showed us the savage side
of nature in the video Cockroach Giving Birth While Being Devoured by Fire Ants, which was
featured on Nat Geo and Discovery Channel. Together we watched as the Fire Nation devoured
Donald Trump & Hillary Clinton during US elections season, and showed us the miracle of how they
survive floods by literally creating air chambers using their bodies and by floating on water. They showed us how they amazingly could walk
a tight-rope to get to food across my room. When the channel hit 1 million subscribers,
I tested my luck by placing my honey-covered hand into their nest, at which of course they
riddled me with stings. On Christmas, we gave them a glittering cockroach
christmas tree which they devoured lovingly. Eventually they moved from their formicarium
to this enormous half land – half water simulation of the Amazon River and rainforest which they
dominated and ruled for two very epic years! We marveled at the Fire Nation’s display
of blood and flesh-lust as they tore apart a bird-eating tarantula, a chicken head, a
mouse, a monitor lizard, and even compete with an army of maggots for a decaying turkey
head! They even gave me battle scars on occasion
to remind me that they were an ant colony to be respected. A super organism and force of nature that
wasn’t playing around! We’ve also been lucky to spot, her royal
highness a few times, the Queen of the Fire Nation, whose name is Queen Solis, sole egg-layer
of the colony, birther of this ant army of millions, who once even narrated an episode. There’s no denying that this ant colony,
though the most challenging ants I’ve ever kept, always keeping me on my toes, was also
one of the most amazing collection of animals, I’ve ever had the honour of caring for. And so it was time to get to the bottom of
what had happened to the Fire Nation. It pained my heart to put on my gloves, knowing
that this could possibly be the last time, I’d be arming myself to go into the Selva
de Fuego, the kingdom I had built with my own hands just for them. My heart raced as I stared down at the location
of their mothernest. If the Fire Nation was still alive, they for
sure would be in here somewhere. My mind started to come up with possibilities. Perhaps they had eaten a lot and weren’t
so hungry. But no, that had never happened before ever! AC Family, it was time to get our answers. I went in and removed the driftwood that formed
their mothernest. I looked for fire ants which ordinarily would
be swarming right now as they did the last time I worked in here. And AC Family, what I saw next shocked me
to the core, as the entire life of the Fire Nation flashed before my eyes. Nothing. The Fire Nation was nowhere to be found in
the location of the mothernest. I could see empty chambers which once held
teams of fire ants, brood, and formed the passageways frequented by queen and male alates,
as well as Queen Solis. They were empty now and ghost tunnels. But then a movement caught my eye. It was a lone supermajor crawling around in
the soil. I also spotted a minor worker crawling around
in the empty dirt. The truth made me so sad, but I had to accept
it. AC Family, I’m sorry to say that I believe
the Fire Nation was on its final days. Our Queen Solis, the sole egg layer of the
entire colony must have died and these ants here were the last remaining ants of her final
batch of eggs. I’m so sorry, AC Family. I’ll be honest, I don’t think I ever felt
such sadness over the loss of a colony like I do now. Now that you guys know how epic the entire
four year journey was with this amazing ant colony, you can probably understand why I
cried when I realized I had lost these amazing, amazing creatures. I know, crying over ants. It sounds so weird to new ears but it’s
just one of those things where you need to be there on the whole journey with them to
understand. I felt this was the end of an era for the
entire Antiverse, the end of the most amazing ant colony in the world in my heart. I placed the driftwood piece back in its spot
and left the Selva de Fuego to allow the final workers to live out their final days in peace. The Fire Nation was about five years old,
and though I’ve been saying on this channel that though the workers only live for a couple
months and that ant queens live for up to 30 yrs, I think I failed to clarify that this
was assumed by the ant keeping community seeing as it was recorded in a German laboratory
that a Lasius niger queen lived that long, but the truth of the matter is, there are
thousands of species of ants and we haven’t kept every ant species in captivity long enough
to be able to tell and verify how long the queens of each ant species actually lives. I think the passing of the Fire Nation, assuming
they didn’t die out from some freak disease, has taught us that the queens of Solenopsis
geminata, red tropical fire ants, live for about 5 yrs before passing away. Queen Solis must have died, some time in November. In a typical fire ant queen’s life, during
those five fruitful years she lays millions of ants, spawning hundreds of generations
of workers, creating hundreds of thousands of reproductive ants during nuptial flight
season every year which go on to mate with those of other fire ant colonies and continue
on the species, to complete the circle of life. The Fire Nation’s passing was such a tough
reminder that the Circle of Life is indeed a full circle, and our once booming fire ant
colony was inevitably destined to come to an end and eventually die. Though the passing of the OG ant colony of
the channel was sad, I also realized that we had learned so much from them over the
years, and that they had not lived in vain. Some of the footage and discoveries we made
of their intriguing, secret lives in the soil and water, during the course of the four years
we’ve followed them on this channel, have not been documented by science. By providing the Fire Nation the best possible
care we could give them to live out their best lives, they rewarded us back with such
a wealth of info, discovery, and heart-stopping and adventurous moments, and that to me is
the essence of what ant keeping is all about. I have been contemplating for a long time
about what to do with the Selva de Fuego, now that it was devoid of an ant colony, other
than these feral ants which by the way we need to discourage from being here, so I was
hoping to get your opinions AC Council. Should we get rid of the Selva de Fuego and
rehome all the aquatic life, or move in another of our ant colonies in here like the Golden
Empire or the Titans? Or should I try to find a brand new fledgling
fire ant colony to start all over again from scratch, to be the Fire Nation’s successors,
a Fire Nation 2.0 of sorts. Let me know in this ipoll here. AC Family, this week, I lit a candle on our
behalf to celebrate the life and death of one of the most amazing ant colonies in the
world. Rest in peace to the Fire Nation. Goodbye, my beloved fire ant colony. I’ll miss you greatly. AC Family, it was a tough two weeks for me
when I first noticed the Fire Nation population had dwindled and then later discovered they
had died out, but I suppose it’s all part of the hobby. So much is in store ahead so if you haven’t
yet, SMASH that SUBSCRIBE button and BELL ICON now and hit ALL so you get notified at
every upload, because I believe notifications seem to be broken but the Youtube support
team is on it. Also don’t forget to hit the LIKE button
every single time including now. It would really mean a lot to me. Thank you, guys! AC Inner Colony, I have left a hidden cookie
for you here, if you would like to watch some extended play footage of some of my favourite
memories of the Fire Nation. And now it’s time for the AC Question of
the Week. Last week, we asked: Which was your favourite creature featured
in today’s full pet ant tour? Congratulations to Alexander Churchill who
answered: I love Jabba the Hutt, the Surinam Horned
Frog. Congratulations Alexander, you just won a
free Ultimate Ant Keeping handbook from our shop! In this week’s AC Question of the Week we
ask: Which was your favourite memory of the Fire
Nation? Leave your answer in the comments section
and you could also win a free e-book handbook from our shop! Hope you could subscribe to our channel as
we upload every Saturday at 8AM EST. Please remember to LIKE, COMMENT, SHARE, and
SUBSCRIBE if you enjoyed this video, to help us keep making more. It’s ant love forever!

Mating frenzies, sperm hoards, and brood raids: the life of a fire ant queen – Walter R. Tschinkel


It’s June, just after a heavy rainfall, and the sky is filling with creatures
we wouldn’t normally expect to find there. At first glance,
this might be a disturbing sight. But for the lucky males and females
of Solenopsis invicta, otherwise known as fire ants,
it’s a day of romance. This is the nuptial flight, when thousands of reproduction-capable
male and female ants, called alates,
take wing for the first and last time. But even for successful males
who manage to avoid winged predators, this mating frenzy will prove lethal. And for a successfully mated female,
her work is only beginning. Having secured a lifetime supply of sperm
from her departed mate, our new queen must now single-handedly
start an entire colony. Descending to the ground, she searches for a suitable spot
to build her nest. Ideally, she can find somewhere
with loose, easy-to-dig soil— like farmland
already disturbed by human activity. Once she finds the perfect spot,
she breaks off her wings— creating the stubs
that establish her royal status. Then, she starts digging
a descending tunnel ending in a chamber. Here the queen begins laying her eggs,
about ten per day, and the first larvae hatch within a week. Over the next three weeks, the new queen relies on a separate batch
of unfertilized eggs to nourish both herself and her brood, losing half her body weight
in the process. Thankfully, after about 20 days, these larvae grow
into the first generation of workers, ready to forage for food
and sustain their shrunken queen. Her daughters
will have to work quickly though— returning their mother
to good health is urgent. In the surrounding area, dozens of neighboring queens
are building their own ant armies. These colonies
have peacefully coexisted so far, but once workers appear, a phenomenon known as brood-raiding
begins. Workers from nests
up to several meters away begin to steal offspring
from our queen. Our colony retaliates, but new waves of raiders
from even further away overwhelm the workers. Within hours, the raiders have taken
our queen’s entire brood supply to the largest nearby nest— and the queen’s surviving daughters
abandon her. Chasing her last chance of survival, the queen follows the raiding trail
to the winning nest. She fends off other losing queens
and the defending nest’s workers, fighting her way
to the top of the brood pile. Her daughters help their mother succeed
where other queens fail— defeating the reigning monarch,
and usurping the brood pile. Eventually,
all the remaining challengers fail, until only one queen—
and one brood pile— remains. Now presiding over several hundred workers
in the neighborhood’s largest nest, our victorious queen begins
aiding her colony in its primary goal: reproduction. For the next several years,
the colony only produces sterile workers. But once their population
exceeds about 23,000, it changes course. From now on, every spring, the colony will produce
fertile alate males and females. The colony spawns these larger ants
throughout the early summer, and returns to worker production
in the fall. After heavy rainfalls,
these alates take to the skies, and spread their queen’s genes
up to a couple hundred meters downwind. But to contribute
to this annual mating frenzy, the colony must continue to thrive
as one massive super-organism. Every day, younger ants feed the queen
and tend to the brood, while older workers
forage for food and defend the nest. When intruders strike, these older warriors fend them off
using poisonous venom. After rainfalls,
the colony comes together, using the wet dirt to expand their nest. And when a disastrous flood
drowns their home, the sisters band together
into a massive living raft— carrying their queen to safety. But no matter how resilient, the life of a colony must come to an end. After about 8 years,
our queen runs out of sperm and can no longer replace dying workers. The nest’s population dwindles,
and eventually, they’re taken over
by a neighboring colony. Our queen’s reign is over,
but her genetic legacy lives on.

Repair Cockroach Infested No Power MacBook Pro (Retina, 13-inch, Early 2015)

Repair Cockroach Infested No Power MacBook Pro (Retina, 13-inch, Early 2015)


Today, we are repairing a MacBook Pro. Model A1502. Connect to power. No response. Light is off. See the meter on the power supply. First, a visual inspection. See the bottom case. Cockroaches. All the bits here. Roaches. Cockroaches likely caused the power issue. Unplug the battery. Peel the sticker off. The motherboard. Look for liquid damage. Many cockroaches here. Everywhere. And the Liquid Contact Indicator is red. That means liquids or cockroaches have infiltrated the motherboard. Check the other side. More cockroaches here. No significant corrosion detected. Connect to power. To check power issues. Try with just the motherboard. With motherboard only, there is no current or light. The readings show no change. Remove the hard drive. Motherboard part number is 820-4924-A. Serial number here. CPU and memory size. Open schematic and board drawings. Let’s check the main power bus PP3V42_G3_REG. This one here. PP3V42_G3H_REG controls the green light circuit. Check if voltage is produced here. L7095. This inductor is on the other side. This is the inductor. Check its resistance to ground with our multimeter. Set to ohms. Diode mode. Resistance is normal at 304 Ω. Ground resistance is normal. Connect to power. Test the inductor for voltage. The inductor has no voltage. Trace the inductor’s voltage to check the circuit. Have a look at this chip. What U7090 needs. First, power supply from pin 6. Here, through these diodes to here. Check pin 6 on U7090 for power. Test for voltage. No voltage on pin 6. Let’s try pin 1 on D7005. See if pin 1 has voltage. No voltage. Investigate further along. There is no voltage at D7005. Try further up the circuit. On top, the fuse F7005. Here’s the power source connector J7000. Power goes through the fuse. Then forks into two routes. One leads here to power a chip. The other leads to the charging chip. Good. Now locate F7005. Over here, test this inductor. Inductors have power on both sides. Inductors conduct electricity. After the inductor, a certain Q7010. Check this MOSFET Q7010. Pin 1 for voltage. Here is Q7010, the transistor. Test shows no voltage. This means voltage does not reach here. Power is lost after the transistor Q7010. Now look at pin 4. Test Q7010’s gate for voltage. Pin 4 is 17.38 V. This is a p-channel MOSFET. Pin 4 must pulled to ground for current to flow. So we have a problem here. Have a look under a microscope. We can clearly see the Q7010 I was measuring earlier . And beside it, a corroded resistor. This chip and pin are also corroded. The resistor and chip are all corroded. First, let’s replace the resistor. Here it is, R7011. R7011. When power reaches here, it is cut. Causing voltage to go over 17.0 V. 17.0 V because it was not split. After changing the resistor, connect to power. Light still does not show. No change in current. There are other problems. Now, let’s check if voltage goes through the resistors and getting split. Check if there are problems with the pins. Over here is resistor R7010. Find pin 1 and 2. It is 17.4 V. Look at this diode. This diode connects to ground and the resistors,
to R7011. Maybe the diode is faulty. Because pins 1 & 2 have the same voltage. Normally, this diode drains to ground to give 6.8 V here. This diode regulates voltage. Try changing the diode. Both pads show no voltage. Connect power after changing the diode. The light comes on. Current has started flowing. R7011 goes to Q7010’s gate. Voltage at pin 4 is 6.8 V. That is normal. Test the voltage again. It should be 6.8 V. It is normal. Test voltage at the inductor again. 3.43 V. It is normal. Good. Put everything back together.