Connected on 2010-01-20 10:00:00
from Yarmouth, ME, US
- 8:44 am
- Bugscope Teamcoating the sample
- 8:58 am
- Bugscope Teamsample in scope, starting vac
- Bugscope Teamstarting presets
- 9:05 am
- 9:11 am
- 9:16 am
- 9:23 am
- 9:29 am
- 9:36 am
- 9:42 am
- Bugscope Teamdone with presets, session unlocked
- Bugscope Teamwe are READY!
- 9:48 am
- Bugscope TeamWelcome to Bugscope!
- Bugscope TeamPlease let us know when you have questions.
- Bugscope TeamMVU are you working with us today?
- Bugscope Teamclick tp stop, one click
- Bugscope Teamto
- Guestyes but can't stay long
- Bugscope Teamso you are just testing things out and your real connection is later
- 9:53 am
- Bugscope Teamthat's okay, we've got a school login in a few minutes, and will need to give control to them
- Guestyes. thats fine
- Bugscope Teamthis is one of the ants, which are tiny
- Guestthis is great!
- Bugscope Teamwelcome to bugscope mrs. gautreau
- Bugscope Teamwe are ready for you and your students
- Bugscope TeamGood morning Mrs Gautreau!
- Bugscope TeamMrs G you have control of the microscope.
- Bugscope Teamthis is a very small ant, one of three
- TeacherHi, this is Cathy Wolinsky helping Stephanie Gautreau's class. We're waiting for the class to come in from recess.
- Bugscope Teamokay, no problem
- TeacherAbout 5 more minutes
- Bugscope Teamif you have any questions please go ahead and ask
- Bugscope TeamCool we have worked with you before. Let us know if you need anything. Feel free to test drive.
- Bugscope TeamSo yeah Hi Cathy!
- Bugscope Teamthis is the head, of course
- Bugscope Teamyou can see one antenna, one eye, and the jaws
- Bugscope Teamlooks like the other antenna is busted off
- 10:01 am
- Bugscope TeamMVU let us know if you have questions in the meantime. I think you have a pretty good idea of how things work.
- TeacherHi, we're all set.
- Bugscope Teamgreat, we are ready too
- Bugscope Teamthis is an ant
- Bugscope Teamthe head of the ant
- Bugscope Teamyou can see the compound eye in the upper left
- Bugscope Teamthe part of the antenna with all of the segments on it is called the flagellum (which is used to describe a motor tail, normally, in a single celled animal) or funiculus.
- Bugscope TeamThe non flexible part of the antenna, closer to the head, is called the scape
- TeacherSean, how many little facets does it have in th compound eye.
- TeacherFrom Catie, can you tell how old the ant it?
- Bugscope Teamlooks like 35 or so, hard to tell
- 10:06 am
- Bugscope Teamit is probably just a month or so old
- Bugscope Teamthose facets are called ommatidia, there are only 40 or so here, but other insects, especially those that fly, have hundreds, sometimes thousands of ommatidia
- Bugscope Teamnow we see the compound eye much better. good job driving!
- TeacherFrom Zach, does an ant have any hairs?
Bugscope Teamwell, yeah, it looks really hairy doesn't it? but those aren't hairs like ours. they are called setae (pronounced see-tee)
- Bugscope Teamsome ants do not have eyes; they all seem to depend more on their antennae
- Bugscope Teamsetae are sensory, they help insects to sense their environment
- TeacherConnor, is this ant a male or a female?
- Bugscope Teamsetae can be mechanosensory, sense mechanical movement. they can also be chemosensory, and sense chemicals, smell, tastes, etc.
- TeacherEmily, on the ant where is its jaws and mouth?
Bugscope Teamyou can see the jaws just under the antenna, the jaws are covering the mouth area
- TeacherKara, what are the dots (structures) near the eye?
Bugscope Teami'm not sure, some kind of deformation in the exoskepeton
- Bugscope TeamI think that the workers are female, like in bees, trying to check
- Bugscope Teamexoskeleton, i mean
- TeacherAre we centered on the mouth?
- TeacherHow many teeth does it have? Randy
Bugscope Teamthey don't have teeth but they have hardened tips to their jaws
Bugscope Teaminsects don'
- Bugscope Teamit's maybe a little bit up and to the right, but only slightly
- 10:11 am
- TeacherIS this a real ant? Emma
Bugscope Teamoh yeah, totally real
- Bugscope Teaminsect's don't have teeth like we do
- TeacherIs this an insect? Emma
- Guestthis was lots of fun but got to go - thanks alot - we will be back on the 28th :)
Bugscope Teamthank you!
- Bugscope Teaminsects do not have teeth or bones
- Bugscope Teamsee you mvuscience!
- Bugscope Teamyes it is an insect, and it is real
- Bugscope Teaminsects have six legs, a head, thorax, and an abdomen
- TeacherAre there any ants that don't have eyes? Allie
Bugscope Teamyep, totally. ants have great sensory setae, and some are totally blind but can move so well because of their sensory setae smell the world around them
- Bugscope Teamthey all have antennae, and they depend on them often more than they do their eyes
- Bugscope Teamthe antennae have many of the sensory setae Alex mentioned on them
- TeacherWhat type of ant would this be? Mason
Bugscope Teamthere are so many kinds and so many shapes for each kind we don't know for sure. it is a very small brown ant
- TeacherWhat is the round thing on the thorax in this view?
Bugscope Teamthat is a coxa, which is the first segment of a leg, closest to the body. the rest of the leg is broken off.
- TeacherHow big is the ant? Catie
Bugscope TeamIt is about 2 mm long
- 10:16 am
- TeacherCan we look at another specimen?
Bugscope Teamyes just click on another preset
- Bugscope TeamI can do it for you...
- Bugscope Teamat any time, you can click on any of the 24 presets, and the scope will move there
- Bugscope Teamdo you recognize this?
- Bugscope Teamit is a kind of crustacean, not an insect
- TeacherThey would like to see the dragonfly head?
- Bugscope Teamoh...
- Bugscope Teamok
- Bugscope Teamok, preset 16 is the dragonfly head, i just clicked on it
- Bugscope Teamhold on the scope is confused, rrying to fix
- TeacherOK, I did too, sorry
- Bugscope Teamok, mrs g, try again
- Bugscope Teamwe are stuck looking at the roly poly for a sec while Alex restarts the server, which just hung up
- Bugscope Teami think when 2-3 people try to click on a preset at the same time, it gets confused... no biggie though
- Bugscope Teamcan you click on preset 16 mrs g?
- Bugscope Teamyou did not do anything wrong, really
- TeacherI clicked on it, but no luck.
- Bugscope Teamok, we are working on it
- TeacherI think when I scrolled it tried to show each one.
- TeacherAll set
- Bugscope Teamthis dragonfly head is upside down
- Bugscope Teamok, i think we are good, try it again mrs g
- 10:21 am
- Bugscope Teamyou should have control back
- TeacherWhat color is dragon fly? Joey
Bugscope TeamI think it is brown
- Bugscope Teamyou can see the compound eyes on either side, and the jaws are in the middle, very small
- Bugscope Teamwe think it was brown
- TeacherDoes it have a smell?
- Bugscope Teamthe microscope images here are all black and white because we are using an electron microscope, not a light microscope
- Bugscope Teamnow it is silver because we coated it with gold-palladium
- TeacherWhat are the two square things on the head?Sean
- Bugscope Teamthey usually smell like dust, to me
- Bugscope Teamwhen using an electron microscope, the image is gathered via electrons, not light. since color is a product of the frequency of light, and we aren't using light, we don't have color
- Bugscope Teamthe square things are some of the mouthparts, which open sideways
- TeacherHow old is it? Emily
Bugscope Teamit is just a few weeks old, I bet. it is hard to know
Bugscope Teamnot sure, sorry emily, maybe a few months at most?
- TeacherHow big are the setae we can see? Ben
Bugscope Teamoh yeah, you can see them, they look like hairs or cat whiskers
- Bugscope Teamnotice the setae on the head as well, insects need setae all over their bodies so they can sense the world
- Bugscope Teaminsect mouths are different from ours -- they open to the side rather than up and down like ours
- Bugscope Teamsee the compound eye now?
- TeacherHow many facets are on both eyes altogether? Kara
Bugscope Teamin this case, thousands! many thousands of ommatidia
- Bugscope Teamyou can start to see the ommatidia, and there are thousands of them
- TeacherDo dragonflies have a sense of smell? Zach
Bugscope Teamyes they can smell chemicals in the air
- TeacherHow do dragonflies eat? John
- Bugscope Teamthey can also, perhaps obviously, see very well
- Bugscope Teamcheck out the shape of the ommatidia, they are hexagons, that allows the surface of the eye to be curved
- TeacherHow fast can a dragonfly fly? John J
- Bugscope Teamthey eat other insects, and they catch them while they are flying
- 10:26 am
- Bugscope Teamthey have four wings, and they can fly very fast: 19 to 38 miles per hour
- TeacherAbout how long does a dragonfly live? Olivia
Bugscope Teammost less than a month! but some species can live up to 6 months
- TeacherWhat type of insects do dragonflies eat?
Bugscope Teamthey eat other insects, mosquitos, even other dragonflys
- Bugscope Teamyou can see that the head fell off, and when Cate put it on the stub she propped it up on a stick, on a piece of wood
- Bugscope Teamnice work mrs g, this is the jaw
- Bugscope Teamthe jaws open from side to side
- Bugscope Teamdragonflies, i mean... silly me
- Bugscope Teamyou can see a scale from a moth or butterfly that might have been a snack
- Bugscope Teamthis is the face of a caterpillar
- Bugscope Teami like this view because you can see the broken exoskeleton. very cool looking
- TeacherWe didn't see the answer, for how big or small are the setae? Ben
Bugscope Teamwell, they can be long, but some are very very small, called microsetae. 100 microns to 300-400 microns maybe
- Bugscope Teamthe bumps are its eyes, which are simple eyes called stemmata
- Bugscope Teammicrons are one thousandth of a millimeter
- 10:31 am
- Bugscope Teama micron is one millionth of a meter
- Bugscope Teamwell, setae aren't really long. relatively maybe. they are short of course because they are sensory parts that stick out of the exoskeleton of the insect.
- Bugscope Teamand a bacterium -- the rod-shaped kind -- is often 2 microns long
- TeacherHow many legs does a caterpillar have? John J
- Bugscope Teamthe caterpillar has six regular legs, and it also what are called 'prolegs' toward the back of the body
- TeacherHow old is this caterpillar? Joey
Bugscope Teamwell, it's hard to know really, probably a few weeks?
- TeacherWhat color is this caterpillar? Dylan
Bugscope TeamIt looked black this morning, but I am not sure what its real color would have been
- Bugscope Teamwe can see some of the regular legs here. they are much like those of the rolypoly
- Bugscope Teaminsects do not live as long as human, not even close
- Bugscope Teambut what they lack in longevity, they make up for in reproductive overflow... :)
- TeacherHow big was the bug that the caterpillar was eating? SEan
Bugscope Teamthe caterpillar was probably eating part of a plant, and we did not get to see that
- Bugscope TeamYay! This is one of the prolegs, and we see some of the hooks called crochets
- Bugscope Teamnice, this is a wing of a dragonfly
- TeacherWhat would eat the caterpillar?
Bugscope Teambirds, mice, larger insects, bats
- 10:36 am
- Bugscope Teamsometimes parasitic wasps attack caterpillars and lay their eggs inside them
- TeacherThis wing looks like broken glass when I catch them. Randy
Bugscope Teamcool, yeah, i know what you mean
- Bugscope Teamsome caterpillars do not taste good, and they have fewer predators
- TeacherWe can see markings that look like letters of the alphabet. Jonny
Bugscope Teamyes isn't that cool? those are scratches
Bugscope Teamno doubt, there's a A in the upper left!
- Bugscope Teamclaws are used to grab food, maybe hold onto walls, or maybe even defense from other insects
- TeacherWhat are the pointy things we see on the claw? Allie
Bugscope Teamsetae, setae are all over the place
- Bugscope Teamthe claws work like those reaching/grabbing devices you see sometimes that have a spring in the handle
- Bugscope Teamthe setae are mechanosensory, which means that they are sensitive to touch
- Bugscope Teamgrasshopper head
- Bugscope Teamthe grasshopper!
- Bugscope Teamsee the broken antenna in the upper left?
- Bugscope Teamthis was a baby grasshopper, very small
- 10:42 am
- TeacherWhat is the grasshopper's predator? Alex
Bugscope Teambirds, beetles, spiders, rodents, reptiles, etc.
- Bugscope Teamgrasshoppers have hardened jaws. if you ate leaves of grass and other parts of plants your teeth would wear down quickly
- TeacherHow many facets are in the grasshopper's eye? Catie
Bugscope Teamthere are likely a thousand per eye. it is very hard to tell because with grasshoppers they are very smooth
- TeacherAbout how long does a grasshopper live? Olivia
Bugscope Teamwell, the total lifespan can be up to a year, but that's with the egg, nymph, and adult. the adult lifespan is 30 days or so
- Bugscope Teamgoodness it looks like there are more than a thousand
- TeacherWhat would be the size of the largest grasshopper in the world? Mason
Bugscope Teamwe think it's the australian giant grasshopper, which can be 3 inches long.
- TeacherWhat color is the grasshopper? TJ
Bugscope TeamI think this was green before we coated it with gold-palladium
- TeacherHow long did it live? Connor
Bugscope Teamit was an adult, like this, for only a week or so, we think
- TeacherWhy do the eyes pop out? Jesse
Bugscope Teamwell, when they pop out like that, that enables the grasshopper to see a wide angle, up to 180 degrees, that's important for it's vision: field of view
- TeacherWe can really see the hexgons on this one--
Bugscope Teamyeah, this is a fly eye, flying insects usually have this very pronounced hexagonal shape
- Bugscope Teamwhen grasshoppers fly they may have a 4 or 5 inch wingspan -- the largest ones
- 10:47 am
- Bugscope Teamthis is the tip of the tongue
- TeacherIs the fly we were looking at a mayfly?
- Bugscope Teamok, cool now see the microsetae, or maybe they are microtrichae...
- Bugscope Teamthis is not a mayfly. it seems more closely related to a housefly
- Bugscope Teamit has a very long proboscis
- TeacherWas the grasshopper a male or a female? Joey
Bugscope Teamwe think it was a boy because we didn't see ovipositor
- Bugscope Teamnice, this is a very high magnification of a moth wing scale
- Bugscope Teamthe ovipositor is what insects use to lay eggs
- Bugscope Teamthis is part of the moth's antenna
- TeacherHow long was the moth wing? Sean
Bugscope Teamabout 1.5 centimeters, it was a small moth
- Bugscope Teamoften the males have more frilly antennae
- Bugscope Teamthere is a scale bar in the image (lower left) that can give you an idea of scale
- Bugscope Teamnow this is way cool
- Bugscope Teamthis is kind of creepy
- Bugscope Teamwe do not see this very often
- Bugscope Teamthe fungus is growing onto the eye
- Bugscope Teamthis is like alien intruder on a moth eye! ack!!!
- TeacherDid the fungus grow while the moth was still alive?
Bugscope TeamProbably not. Usually, when the moth is alive, it is able to clean off spores before they germinate. Also, the moth's immune system will attack invading organisms like fungi
- Bugscope Teamwhen things die they are attacked by fungus and bacteria, which break them down
- 10:53 am
- TeacherWhat type of fungus is attacking the moth? Emily
Bugscope Teamsorry but we don't really know
- Bugscope Teamhey cool!
- TeacherHOw many legs does a centipede have? Kara
- Bugscope TeamThe taxonomy of fungi is very complicated. I am sure they would welcome any new scientists who are interested in studying how to identify fungi ;)
- Bugscope Teamthis is the head of a millipede -- I think I called it a centipede at first
- TeacherOK, how many legs on a millipede?
Bugscope Teamthe idea is that a millipede has a thousand legs and a centipede has a hundred, but neither of those is really true
- Bugscope Teami changed the preset so it now says millipede
- Bugscope TeamYes as Annie says there are lots of things that people have not fully studied yet.
- Bugscope Teamthis is a crystal of some kind of salt
- TeacherThank you for this session. It was awesome!
Bugscope Teamdon't forget your member page: http://bugscope.beckman.illinois.edu/members/2009-133, all the chat and images are saved there
- Bugscope TeamCentipedes have one pair of legs per segment, and millipedes usually have two pairs per segment
- Bugscope TeamYay! Thank You!
- TeacherThank you for showing us these awesome pictures. We'll look at them again.
- 10:58 am
- Bugscope Teamgood bye, thank you! great job!
- Bugscope TeamMrs G you were driving an electron microscope, so you were collecting images in real time. They were not really just pictures.
- Bugscope Teamnice session everyone, goodbye