Connected on 2008-07-09 10:00:00
from Columbia, MO, US
- 8:57 am
- Bugscope TeamLooks like you got us going, Alex-San--Thanks!
- Bugscope Teamwe are good, i'll be down in a sec
- Bugscope TeamPumping...
- 9:03 am
- Bugscope Team39
- Bugscope Team38
- Bugscope TeamEP4 37
- Bugscope Team9.5 10-4
- Bugscope Team6.3 x 10-4
- Bugscope Team5.6 x 10-4
- Bugscope Team3.5
- Bugscope Team3.2
- Bugscope Team3.0
- 9:08 am
- Bugscope Team2.3
- Bugscope Team2.0
- 9:22 am
- Bugscope Teamhello little_dixie, welcome to bugscope
- Bugscope Teamhi jeanne! welcome to bugscope
- Bugscope Teamwe are making presets at the moment
- Bugscope Teamwe'll let you know when we are done
- Bugscope Teamif you have any questions in the meantime, please feel free to ask
- 9:29 am
- 9:35 am
- Bugscope Teamhi debbie, welcome to bugscope
- 9:41 am
- 9:47 am
- 9:52 am
- TeacherMissCoLib is ready!!
- Bugscope Teamokay, we are finishing up presets, we'll lbe ready in a second
- Bugscope Teamok, we are done with presets, misscolib has control of the scope
- Bugscope Teamthis is a close-up of a compound eye
- Bugscope Teamthe compound eye is made of of hundreds of individual facets (hexagons), called ommatidia
- 9:58 am
- Teachercan you communicate to us or do we need to read your comments? Do we need speakers
- Bugscope TeamThis is the eye of a firefly
- Bugscope TeamThis is chat only, we don't use audio of video
- Bugscope TeamWe are set up so you can read our comments and you can ask questions of us.
- Bugscope Teama lot of sessions are set up so that students can communicate directly with us, and that puts us all on the same level
- Bugscope Teamtoday we hope to be able to comment via chat while you are driving the microscope
- Bugscope Teamif you prefer it, we could drive around on the scope, and just start chatting about what the images are? or you can control it and ask questions. it's up to you.
- Bugscope Teamand we plan to be able to answer any questions you have
- Bugscope Teamwhoever is driving the microscope has the responsibility of focusing, for example, for the group
- Bugscope Teamand we can confer control to whomever you choose
- TeacherWe would like you to drive it and we will ask questions as we go
- Bugscope Teamonly one person can control the scope before, but we can switch control to anyone
- Bugscope Teamokay we can do that
- Bugscope Teamokay, scott, want to drive? or want me to?
- Bugscope Teamokay, i'm driving, look out!!!!
- 10:03 am
- TeacherWe are going to do an intro at 10:05 and then start at 10:10. What bug will we start with
- Bugscope Teamright now we are looking at a firefly, right scott?
- Bugscope Teamnow, this is the head of an ant
- Bugscope Teamwe mount most samples on the dorsal side so you can see the ventral side, which is usually more interesting
- Bugscope Teamdude, this any has a HUGE abdomen!
- Bugscope Teamit's swollen
- Bugscope Teamlooks like a little hernia near the top left too :)
- Bugscope Teamokay, i'm going to stop here, just let us know when you are ready misscolib
- Bugscope Teamit got stepped on when we found it i think
- Bugscope Teamall of the samples are coated with several nanometers of gold-palladium, using a sputter coater, to make everything conductive
- 10:09 am
- Bugscope Teamif it was not conductive the electron beam would cause the sample to charge up as it passes across it
- Bugscope TeamMissCoLib, when you are ready, let me know, and I'll start driving the scope again
- Bugscope Teamoh yeah I forgot this ant was not in the best shape when we found it
- TeacherWe are ready!!
- Bugscope Teamokay, this is an ant
- TeacherWe do not see ant, just a black screen
Bugscope Teamtry clicking on refresh (F5)
- Bugscope Teamhit refresh
- Bugscope Teamyou should see an ant head now, if not then refresh your browser window (F5)
- Bugscope Teamlet me know when you see the ant head, MissCoLib
- TeacherWhat is the large thing on his head? Mouth?
Bugscope Teamright now we are looking at the head from the underside (the ant is on its back), so a large portion of the head that we are looking at is the mouth
- Bugscope Teamyep, the mouth is in the middle of the image
- Bugscope Teamtwo antennas on the side, and some tarsi (legs) near the bottom of the image
- Bugscope Teamit has a hinged jaw and some palps that look like the legs of a small insect (as if the ant was eating another bug!)
- TeacherHow does the ant see
Bugscope Teamants have compound eyes, although we can't see them at this angle
- Bugscope TeamMissCoLib, if the image ever goes black for more than a moment, just try refreshing the screen
- 10:14 am
- TeacherAre there army ants in Southeast Missouri
Bugscope Teamthey can be found in missouri
- Bugscope Teamthere are many other samples today where we can see compound eyes, i'll move to one now
- Bugscope Teamants have small eyes, or sometimes no eyes at all. they arent really needed
- Bugscope Teamthey use their antennae more than they use their eyes
- Bugscope Teamthis is a compound eye on a fruit fly, they have highly developed eyes
- Teacherwhat is a compound eye
Bugscope Teamit is an eye that has many individual facets, called ommatidia, each one has a lens in it
- Bugscope TeamI am not sure if there are army ants in Missouri -- I am checking
- Bugscope Teamah Pepper is so quick, as usual
- Bugscope TeamMissCoLib, see the hole to the upper right? That's a spiracle, that's how the fly breaths...
- Bugscope Teami'm going to center on the spiracle now
- Bugscope Teamcompound eyes are useful to have because they register motion rapidly; they can see things move with a better efficiency than we can
- Bugscope Teamants seem to be omnivorous, although some of them specialize
- TeacherAre those haris on the ant
- Bugscope Teamthose are setae, and microsetae
- Teacherwhat is setae
- 10:19 am
- Bugscope Teamin this case they keep dust out of the spiracle, which is a breathing pore
- Bugscope Teamsetae are the hairlike projections
- Bugscope Teamthis is on a fruit fly
- Bugscope Teamsome setae are mechanosensory and some are chemosensory -- that is the insect can smell using receptors built into the seta
- Bugscope Teamnow we can see the haltere, in the center
- Bugscope Teamthe haltere helps the fly the balance itself during flight
- Bugscope Teamthe haltere gyrates against the body of the fly as it is flying
- Bugscope Teamthe haltere balances the motion of the wing in Diptera -- two-winged insects
- Bugscope Teamit's like a little punching bag
- Bugscope Teama hairy punching bag!
- Bugscope Teamit beats opposite the way the wings beat
- Bugscope Teamthey are not found in four-winged insects, and that is not a surprise since they are modified hindwings
- Teacherdo you have a ladybug we can see
- Bugscope Teamthe microsetae probably add lightweight surface area to the cuticle
- Bugscope Teamwe did not have any good ladybugs today -- I am sorry
- 10:24 am
- Teacherwhat kind of bugs do you have
- Bugscope Teamlet's go to the moth
- Bugscope Teami usually get ladybugs from my home, but i haven't been finding too many this year
- Bugscope Teamthis is a moth head
- Bugscope Teamwe have a small moth, a housefly, an ant, a section of a giant millipede with tiny mites on it...
- Bugscope Teamthe firefly is on the stage but didn't look so good today
- Bugscope Teamwe also have a shieldbug and the fruit fly
- Bugscope Teamthis is the moth
- Bugscope Teamthe scales are like tiny feathers and are what make moths, skippers, and butterflies feel soft to the touch
- Bugscope Teamnow we see some of the scales up close
- Bugscope Teamthe scales have pigment colors but also, because of their shape, form structural colors
- Bugscope Teamas scott mentioned, scales are comparable to the feathers on a bird
- Bugscope Teamlike for example you might see in the grooves of a record
- Bugscope Teamscales are the "powder" you get on your fingers if you rub a butterfly/moth wing
- 10:29 am
- Bugscope Teamthe record might be pure black but will reflect color because of the fine ridges
- Bugscope Teamthis is the moth head now, i'm not sure what they eat, scott, cate?
- Bugscope Teamsome of them eat wool
- Bugscope Teamapparently
- Bugscope Teamthis is the proboscis
- Teacherwhat is the pokla dor pic
- Teacherwhen scales rub off how quickly does it grow back
Bugscope Teambutterflies and moths can lose a few scales and be fine. they won't grow back. but if you rub off all the scales on their wings, they probably won't be able to fly anymore
- Bugscope Teamthat is one of the palps, and the holes are where the scales have been stripped out
- 10:34 am
- Bugscope Teamthe proboscis is like a straw
- Bugscope Teamis that the polka dot thing you were asking about?
- Teacheryes
- Bugscope Teamit looks like the base of the antenna
- Bugscope Teamsee the top left, should have an antenna sticking out of it, i think? scott?
- Bugscope Teamthat is one of the palps, and you can see where the scales had been, in the holes
- Bugscope TeamI could be mistaken but I think that is not an antenna in this case
- Bugscope Teamit is hard to tell
- Bugscope Teamcooooool.....
- Teacherwhat happens to the scales once they are rubbed off
- TeacherDo bugs have noses
Bugscope Teamwell, not really, they sense smell, often, through those hairs, called chemosensory setae
- Bugscope TeamAlex is taking the mag so high that if there were bacteria we would have no problem seeing them
- Bugscope Teamthey do not have noses but can use various chemosensors, including some built into the tips of setae, to smell
- Bugscope Teami guess a seta could be thought of a nose, but it'd be a REALLY hairy nose!
- Bugscope Teamlet's go check out some mites? okay?
- Teacherlet's see the centped
- Bugscope Teamokay
- 10:39 am
- Bugscope Teaminsect antennae are the insects' nose
- Bugscope TeamMonarch butterflies have chemosensory setae on their feet -- they can smell with their feet
- Bugscope Teamthese mites are blind -- they don't need to be able ot see
- Bugscope Teamto see
- Bugscope Teamyou can tell that they are quite small
- Bugscope Teamthe mites are only a few hundred microns long
- Teacheris this the mite on the cento or is the mite on the legs
- Bugscope Teami moved away from the mite, i'll try to find it again
- Bugscope Teamah, there's another mite
- Bugscope Teamthere are more than one mite here
- Bugscope TeamAlex just found one on the legs
- Bugscope Teamleg
- Bugscope Teamlooks like he's chomping down on some food
- Teacherdo you have spiders
- Bugscope Teamno spiders today, I am sorry
- 10:44 am
- Bugscope Teamokay, moving to a fruit fly comb
- Bugscope Teamthe stub we have in the vacuum chamber is 1.75 inches iun diameter, and we put everything we can on it
- Bugscope Teamthis is something we usually find on ants, and it is the first time we have noticed one on a fruit fly
- Teacherwhat exactly are we looking at is this a rib
- Bugscope Teamit is a comb that is used, we think, to clean debris off the antennae
- Bugscope Teamit's a built-in comb
- Bugscope TeamI think there are two of them, one on each of the forelimbs
- Teacherdo you have any bees?
- Bugscope Teamsorry we dont have any bees today
- Bugscope Teamno sorry no bees today
- Bugscope Teamthe reason we see so many setae is because insects and small arthropods have exoskeletons
- Teachercan yo utell us again what bugs you have
- Bugscope Teamwe have a fruitfly, housefly, stink bug, centipede with mites, ant...
- Bugscope Teamsalt
- Bugscope Teama small moth
- 10:49 am
- Bugscope Teamif you had an exoskeleton it would be like having armor all of the time, and you would not be able to sense things touching your body
- Teacheris this picture his mouth
Bugscope Teamthe mouth is in the lower middle part. the eyes are on the sides, and the antennae are in the top middle
- Bugscope Teamyes, the salt is from wendy's, the fast food joint
- Teacherstink bug
- Bugscope Teamthis is the mouth, the antennae, and the eyes -- it's the head of a female housefly
- Bugscope Teamthe stink bug is the shield bug
- Bugscope TeamMissCoLib you know we are driving a scanning electron microscope, so we are sending live images
- Bugscope Teamand you could drive if you wish to
- Teacheryes it looks great
- Bugscope Teamthe microscope takes up a whole room, and it has its own air, nitrogen, cooling water, airconditioning...
- Bugscope TeamAlex is cruising over to see the stinkbug.
- Bugscope Teamit doesn't smell bad now
- 10:55 am
- Bugscope Teambut it is in a vacuum -- the microscope has a complex vacuum system
- Teacherthank you and we are now going to say goodbye!!!
- Bugscope TeamThank You!
- Bugscope Teamthanks for all your questions
- Bugscope Teamthank you MixxCoLib, all the chat and images from today's session are on your Bugscope member page: http://bugscope.beckman.uiuc.edu/members/2007-091
- Bugscope TeamMissCoLib i mean :)
- Bugscope TeamHi Jeanne!
- Bugscope Teamokay, going to close the session now
- Bugscope TeamOKay Bye!
- Bugscope Teamrxl stopped, session disabled, nice session folks