Connected on 2015-02-05 16:00:00 from McLean County, Illinois, United States
- Bugscope Team setting up for today's session
- Bugscope Team hello!@]
- Bugscope Team welcome to Bugscope!
- Bugscope Team we are making presets for your session today
- Bugscope Team you are officiallly scheduled for 4 p.m., right?
- Teacher Yes. I just signed into to make sure it was working
- Bugscope Team yay! super cool
- Bugscope Team I will make some more presets.
- Bugscope Team we are ready to roll!
- Bugscope Team this is one of the ladybug's antennae
- Bugscope Team please let us know when you have questions
- Bugscope Team you can control the microscope using your computer, and you can also click on any of the presets, on the screen to the left, and the 'scope will drive to that place
- Bugscope Team this is another beetle
- Teacher The girls are arriving.
- Bugscope Team sweet!
- Bugscope Team to the left of the beetle's head, and above it, we see the tail end of a very long thin caterpillar
- Teacher Can we start with the fly?
Bugscope Team yes anything you would like
- Bugscope Team this is one of the fruit flies
- Bugscope Team we're looking at the compound eye, which is made up of tiny facets called ommatidia
- Bugscope Team sometimes there is dirt on the eye, as there is now
- Bugscope Team to the right we see a swath of setae, tiny hairs
- Bugscope Team some setae are sensory
- Teacher Natalia asks why is there dirt on the eye?
Bugscope Team it may not be the fruitfly's fault; because it is dead the dirt may have gotten on there after it died
- Bugscope Team insects can 'groom' their eyes and other body parts to keep them clean
- Bugscope Team ants, for example, have little combs on their forelimbs
- Teacher Why are the facets shaped like hexagons?
Bugscope Team hexagons are the best shapes for close-packed round things in a dome shape, so it happens the the generally round features take on a hexagonal shape
- Bugscope Team we see that with bee hives, and also with crystals, sometimes
- Bugscope Team the background is carbon doublestick tape
- Bugscope Team the tape has those little craters in it
- Bugscope Team we can see that the wing is broken
- Teacher They want to see the wing up close
- Bugscope Team flies are called Diptera, which means 'two winged'
- Bugscope Team these features, on the wing, are microsetae
- Teacher what do they do?
- Bugscope Team they help add surface area to the wing, they help keep bacteria off the wings of some insects, and they also seem to help keep the wings from getting stuck flat to a surface when they get wet
- Bugscope Team in the distance we see some scales, which come from butterflies, moths, skippers, silverfish, mosquitoes, and few other insects
- Teacher how do we see other bugs?
Bugscope Team click on one of the presets on the lefthand screen, if you click the white arrow in the blue circle
- Teacher thanks
Bugscope Team if for some reason a certain preset does not work, I can likely help.
- Bugscope Team this caterpillar is still soft, not completely dry, so it has been moving around a bit in the vacuum of the specimen chamber
- Teacher The girls want to know how he died.
- Bugscope Team kind of rotten, we can see
- Bugscope Team some of today's samples have bacteria on them
- Teacher they are impressed
- Bugscope Team this is a moth's head
- Bugscope Team moths are covered with scales, which help them fly, kind of like feathers, but their primary purpose seems to be protecting them from spiders
- Bugscope Team this is the moth eye up very close, where we can see tiny features that seem to help focus the light into the individual lenses
- Bugscope Team the shape we see now is where we were before
- Bugscope Team (the rectangular shape)
- Bugscope Team the moth's head is glowing because with all of the scales, even though we coated it with gold-palladium before the session, it charges up with electrons
- Bugscope Team to the right we see the tongue, or actually, the proboscis
- Teacher They want to take a second to draw the eyes and scales
Bugscope Team all good!
- Bugscope Team the compound eye is to the left, in the middle are scales that are likely on one of the palps, and to the right is the coiled proboscis
- Bugscope Team the scales look cool - the ends are ruffled like that
- Bugscope Team if we look at the proboscis, up very close, we see that they have tiny sharp spines on them like thorns
- Teacher The girls are all first graders so they are working on making good observations
Bugscope Team sweet!
- Teacher They are very impressed with the bugs eyes and scales
Bugscope Team some compound eyes have thousands of individual ommatidia, or facets
- Bugscope Team beetle claws almost always come in pairs, like pincers; one of the claws is broken off here
- Teacher Why do beetles need sharp claws?
Bugscope Team the claws help them grasp things and the finer the tips are the better control they have in holding onto soft surfaces
- Bugscope Team this is so small you would not feel it, just a tickle if you felt anything at all
- Bugscope Team ooh
- Bugscope Team this is an ant stinger, from a trapjaw ant from Brazil
- Bugscope Team the entomologists who gave this to us said the sting is like that of a wasp -- it hurts
- Bugscope Team it is almost a millimeter long
- Teacher What are the hairs around the stinger?
- Bugscope Team those are setae that help the ant sense its surroundings
- Bugscope Team we are not supposed to call things that look like hair in insects 'hair,' although of course we do
- Bugscope Team insects have their skeleton on the outside, so it is more like a shell
- Bugscope Team or like a suit of armor
- Bugscope Team this is really cool, where we are now
- Teacher What do they use the proboscis for?
Bugscope Team they stick the proboscis, uncoiled, into flowers in order to suck the nectar out
- Bugscope Team the proboscis is all coiled up right now
- Bugscope Team the proboscis is hollow, like a straw
- Bugscope Team moth and butterfly proboscises usually have a seam running along their length that they can open up
- Teacher Why does it have spikes?
Bugscope Team I think the spikes help it stick to the inside walls of the flower; they may be flying at the same time they insert the proboscis into the flower, so it helps them hold on
- Teacher many curled tounge faces as they think about the hollow proboscis
Bugscope Team awesome!
- Bugscope Team this is so cool -- so very small
- Teacher it is really neat!
- Bugscope Team the reason insects have so many setae (so many tiny hairs) is that the setae help them sense touch, and wind, and they help them taste, and also sense hot and cold
- Teacher They are drawing lots of pictures!
Bugscope Team yay!
- Bugscope Team the setae, at least the larger ones, stick through the exoskeleton and connect to nerves underneath
- Teacher What can you tell us about the beetle?
Bugscope Team we are looking at its mandibles now, which are its jaws; they open side to side like a gate, not like our jaws do
Bugscope Team the little things that curve inward toward each other are palps, which help the beetle taste and also manipulate its food into its mouth
Bugscope Team I am not sure just what this kind of beetle is, but when we look at its legs we can see that it cannot cling to surfaces like flies and some other beetles can
- Teacher is this the same beetle we saw the claw of?
Bugscope Team yes it is; the other beetles on the stub today are ladybird beetles, or ladybugs
- Bugscope Team this, now, is a ladybug
- Bugscope Team I am sorry its arms and legs were broken after it died
- Bugscope Team but its head looks good, and we can see that its eyes are streamlined into the sides of the head
- Bugscope Team but here also is something cool
- Bugscope Team yay!
- Bugscope Team these tiny setae help the ladybug stick to the ceiling
- Teacher Is this the foot?
Bugscope Team yes this is part of the foot -- it is a pad that can be found on each foot, and it has these tiny sticky hairs (stick setae) on it
Bugscope Team flies have setae like this as well
Bugscope Team the other beetle did not have tenent setae on its legs and arms, and thus it could not have climbed up a wall very easily
- Bugscope Team I want to show you the same kind of thing on a fruit fly foot
- Bugscope Team this is so cool!
- Bugscope Team see the tiny sticky setae next to the claws?
- Teacher They like the spikes!
Bugscope Team oh yeah!
- Bugscope Team so very small -- even the fly is small
- Bugscope Team some of the smaller spikes are used for proprioception, which means that the fly uses those spines or spikes to tell what position its claw is in
- Bugscope Team when the spines bend from the claw touching them, the fly can feel it
- Teacher Could we stick to walls if we had feet or hands like this?
Bugscope Team yes you could!
- Bugscope Team we can get an idea that flies walk by sticking the pads down and then flexing their claws to pull the pads loose until the next step
- Teacher now they are trying to stick to the wall...
- Bugscope Team geckos have even smaller setae on their hands and feet
- Bugscope Team and we know that geckos, some of them, can run across your ceiling
- Bugscope Team if you try to catch a gecko, though, its tail may break off, and it will run away; it has to grow a new tail later
- Teacher Are there any other cool things we should see before our time is up?
Bugscope Team we can see bacteria, so I would like to show you some
- Teacher cool!
- Bugscope Team those tiny little rod shaped things are bacteria -- se we are looking at germs!
- Bugscope Team also, mold spores are very pretty
- Teacher Do you know what kind they are? Do we have these in our kitchens?
Bugscope Team it is said that they grow in sponges
Bugscope Team we do not know what they are besides being bacilli, which are the rod-shaped bacteria. There are also round ones called cocci and spiral ones called spirochetes.
- Bugscope Team in the middle above we see a cute little mold spore
- Bugscope Team I looked for pollen, which are similar, but did not find any earlier
- Teacher more setae?
Bugscope Team yes always!
- Teacher they say "ew!"
- Bugscope Team this pore in the lower middle portion of where we are looking now, is called a spiracle
- Teacher What is it for?
- Bugscope Team it is one of the pores insects used to breathe
- Bugscope Team they can open and close them, and they deliver air to organs on the inside of the insect's body
- Bugscope Team we are kind of lucky that insects do not have lungs like we do, so they cannot get as large as we do
- Teacher are they all over the body?
Bugscope Team yes on the sides of each body segment
Bugscope Team one on each side
- Teacher Thank you so much for showing us all this! We have to wind down our meeting now.
- Teacher The girls say "THANKS!"
- Bugscope Team Thank You, Everyone!
- Bugscope Team This is really fun for us.
- Teacher Us too!
- Bugscope Team This is another fruit fly, saying Goodbye, and Thank You!
- Teacher Olive says that you are awesome! and this is awesome!
- Bugscope Team yay!
- Bugscope Team Thank you, Olive!
- Bugscope Team https://bugscope.beckman.illinois.edu/members/2014-092
- Bugscope Team that below is a link to this session, with a transcript
- Bugscope Team see you next time!
- Bugscope Team Thank you again. I am going to log off now.
- Bugscope Team Bye!!!