Connected on 2008-07-09 10:00:00 from Columbia, MO, US
- 8:57am
- Bugscope Team Looks like you got us going, Alex-San--Thanks!
- Bugscope Team we are good, i'll be down in a sec
- Bugscope Team Pumping...
- 9:03am
- Bugscope Team 39
- Bugscope Team 38
- Bugscope Team EP4 37
- Bugscope Team 9.5 10-4
- Bugscope Team 6.3 x 10-4
- Bugscope Team 5.6 x 10-4
- Bugscope Team 3.5
- Bugscope Team 3.2
- Bugscope Team 3.0
- 9:08am
- Bugscope Team 2.3
- Bugscope Team 2.0
- 9:22am
- Bugscope Team hello little_dixie, welcome to bugscope
- Bugscope Team hi jeanne! welcome to bugscope
- Bugscope Team we are making presets at the moment
- Bugscope Team we'll let you know when we are done
- Bugscope Team if you have any questions in the meantime, please feel free to ask
- 9:29am
- 9:35am
- Bugscope Team hi debbie, welcome to bugscope
- 9:41am
- 9:47am
- 9:52am
- Teacher MissCoLib is ready!!
- Bugscope Team okay, we are finishing up presets, we'll lbe ready in a second
- Bugscope Team ok, we are done with presets, misscolib has control of the scope
- Bugscope Team this is a close-up of a compound eye
- Bugscope Team the compound eye is made of of hundreds of individual facets (hexagons), called ommatidia
- 9:58am
- Teacher can you communicate to us or do we need to read your comments? Do we need speakers
- Bugscope Team This is the eye of a firefly
- Bugscope Team This is chat only, we don't use audio of video
- Bugscope Team We are set up so you can read our comments and you can ask questions of us.
- Bugscope Team a lot of sessions are set up so that students can communicate directly with us, and that puts us all on the same level
- Bugscope Team today we hope to be able to comment via chat while you are driving the microscope
- Bugscope Team if 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 Team and we plan to be able to answer any questions you have
- Bugscope Team whoever is driving the microscope has the responsibility of focusing, for example, for the group
- Bugscope Team and we can confer control to whomever you choose
- Teacher We would like you to drive it and we will ask questions as we go
- Bugscope Team only one person can control the scope before, but we can switch control to anyone
- Bugscope Team okay we can do that
- Bugscope Team okay, scott, want to drive? or want me to?
- Bugscope Team okay, i'm driving, look out!!!!
- 10:03am
- Teacher We are going to do an intro at 10:05 and then start at 10:10. What bug will we start with
- Bugscope Team right now we are looking at a firefly, right scott?
- Bugscope Team now, this is the head of an ant
- Bugscope Team we mount most samples on the dorsal side so you can see the ventral side, which is usually more interesting
- Bugscope Team dude, this any has a HUGE abdomen!
- Bugscope Team it's swollen
- Bugscope Team looks like a little hernia near the top left too :)
- Bugscope Team okay, i'm going to stop here, just let us know when you are ready misscolib
- Bugscope Team it got stepped on when we found it i think
- Bugscope Team all of the samples are coated with several nanometers of gold-palladium, using a sputter coater, to make everything conductive
- 10:09am
- Bugscope Team if it was not conductive the electron beam would cause the sample to charge up as it passes across it
- Bugscope Team MissCoLib, when you are ready, let me know, and I'll start driving the scope again
- Bugscope Team oh yeah I forgot this ant was not in the best shape when we found it
- Teacher We are ready!!
- Bugscope Team okay, this is an ant
- Teacher We do not see ant, just a black screen
Bugscope Team try clicking on refresh (F5)
- Bugscope Team hit refresh
- Bugscope Team you should see an ant head now, if not then refresh your browser window (F5)
- Bugscope Team let me know when you see the ant head, MissCoLib
- Teacher What is the large thing on his head? Mouth?
Bugscope Team right 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 Team yep, the mouth is in the middle of the image
- Bugscope Team two antennas on the side, and some tarsi (legs) near the bottom of the image
- Bugscope Team it has a hinged jaw and some palps that look like the legs of a small insect (as if the ant was eating another bug!)
- Teacher How does the ant see
Bugscope Team ants have compound eyes, although we can't see them at this angle
- Bugscope Team MissCoLib, if the image ever goes black for more than a moment, just try refreshing the screen
- 10:14am
- Teacher Are there army ants in Southeast Missouri
Bugscope Team they can be found in missouri
- Bugscope Team there are many other samples today where we can see compound eyes, i'll move to one now
- Bugscope Team ants have small eyes, or sometimes no eyes at all. they arent really needed
- Bugscope Team they use their antennae more than they use their eyes
- Bugscope Team this is a compound eye on a fruit fly, they have highly developed eyes
- Teacher what is a compound eye
Bugscope Team it is an eye that has many individual facets, called ommatidia, each one has a lens in it
- Bugscope Team I am not sure if there are army ants in Missouri -- I am checking
- Bugscope Team ah Pepper is so quick, as usual
- Bugscope Team MissCoLib, see the hole to the upper right? That's a spiracle, that's how the fly breaths...
- Bugscope Team i'm going to center on the spiracle now
- Bugscope Team compound eyes are useful to have because they register motion rapidly; they can see things move with a better efficiency than we can
- Bugscope Team ants seem to be omnivorous, although some of them specialize
- Teacher Are those haris on the ant
- Bugscope Team those are setae, and microsetae
- Teacher what is setae
- 10:19am
- Bugscope Team in this case they keep dust out of the spiracle, which is a breathing pore
- Bugscope Team setae are the hairlike projections
- Bugscope Team this is on a fruit fly
- Bugscope Team some setae are mechanosensory and some are chemosensory -- that is the insect can smell using receptors built into the seta
- Bugscope Team now we can see the haltere, in the center
- Bugscope Team the haltere helps the fly the balance itself during flight
- Bugscope Team the haltere gyrates against the body of the fly as it is flying
- Bugscope Team the haltere balances the motion of the wing in Diptera -- two-winged insects
- Bugscope Team it's like a little punching bag
- Bugscope Team a hairy punching bag!
- Bugscope Team it beats opposite the way the wings beat
- Bugscope Team they are not found in four-winged insects, and that is not a surprise since they are modified hindwings
- Teacher do you have a ladybug we can see
- Bugscope Team the microsetae probably add lightweight surface area to the cuticle
- Bugscope Team we did not have any good ladybugs today -- I am sorry
- 10:24am
- Teacher what kind of bugs do you have
- Bugscope Team let's go to the moth
- Bugscope Team i usually get ladybugs from my home, but i haven't been finding too many this year
- Bugscope Team this is a moth head
- Bugscope Team we have a small moth, a housefly, an ant, a section of a giant millipede with tiny mites on it...
- Bugscope Team the firefly is on the stage but didn't look so good today
- Bugscope Team we also have a shieldbug and the fruit fly
- Bugscope Team this is the moth
- Bugscope Team the scales are like tiny feathers and are what make moths, skippers, and butterflies feel soft to the touch
- Bugscope Team now we see some of the scales up close
- Bugscope Team the scales have pigment colors but also, because of their shape, form structural colors
- Bugscope Team as scott mentioned, scales are comparable to the feathers on a bird
- Bugscope Team like for example you might see in the grooves of a record
- Bugscope Team scales are the "powder" you get on your fingers if you rub a butterfly/moth wing
- 10:29am
- Bugscope Team the record might be pure black but will reflect color because of the fine ridges
- Bugscope Team this is the moth head now, i'm not sure what they eat, scott, cate?
- Bugscope Team some of them eat wool
- Bugscope Team apparently
- Bugscope Team this is the proboscis
- Teacher what is the pokla dor pic
- Teacher when scales rub off how quickly does it grow back
Bugscope Team butterflies 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 Team that is one of the palps, and the holes are where the scales have been stripped out
- 10:34am
- Bugscope Team the proboscis is like a straw
- Bugscope Team is that the polka dot thing you were asking about?
- Teacher yes
- Bugscope Team it looks like the base of the antenna
- Bugscope Team see the top left, should have an antenna sticking out of it, i think? scott?
- Bugscope Team that is one of the palps, and you can see where the scales had been, in the holes
- Bugscope Team I could be mistaken but I think that is not an antenna in this case
- Bugscope Team it is hard to tell
- Bugscope Team cooooool.....
- Teacher what happens to the scales once they are rubbed off
- Teacher Do bugs have noses
Bugscope Team well, not really, they sense smell, often, through those hairs, called chemosensory setae
- Bugscope Team Alex is taking the mag so high that if there were bacteria we would have no problem seeing them
- Bugscope Team they do not have noses but can use various chemosensors, including some built into the tips of setae, to smell
- Bugscope Team i guess a seta could be thought of a nose, but it'd be a REALLY hairy nose!
- Bugscope Team let's go check out some mites? okay?
- Teacher let's see the centped
- Bugscope Team okay
- 10:39am
- Bugscope Team insect antennae are the insects' nose
- Bugscope Team Monarch butterflies have chemosensory setae on their feet -- they can smell with their feet
- Bugscope Team these mites are blind -- they don't need to be able ot see
- Bugscope Team to see
- Bugscope Team you can tell that they are quite small
- Bugscope Team the mites are only a few hundred microns long
- Teacher is this the mite on the cento or is the mite on the legs
- Bugscope Team i moved away from the mite, i'll try to find it again
- Bugscope Team ah, there's another mite
- Bugscope Team there are more than one mite here
- Bugscope Team Alex just found one on the legs
- Bugscope Team leg
- Bugscope Team looks like he's chomping down on some food
- Teacher do you have spiders
- Bugscope Team no spiders today, I am sorry
- 10:44am
- Bugscope Team okay, moving to a fruit fly comb
- Bugscope Team the stub we have in the vacuum chamber is 1.75 inches iun diameter, and we put everything we can on it
- Bugscope Team this is something we usually find on ants, and it is the first time we have noticed one on a fruit fly
- Teacher what exactly are we looking at is this a rib
- Bugscope Team it is a comb that is used, we think, to clean debris off the antennae
- Bugscope Team it's a built-in comb
- Bugscope Team I think there are two of them, one on each of the forelimbs
- Teacher do you have any bees?
- Bugscope Team sorry we dont have any bees today
- Bugscope Team no sorry no bees today
- Bugscope Team the reason we see so many setae is because insects and small arthropods have exoskeletons
- Teacher can yo utell us again what bugs you have
- Bugscope Team we have a fruitfly, housefly, stink bug, centipede with mites, ant...
- Bugscope Team salt
- Bugscope Team a small moth
- 10:49am
- Bugscope Team if 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
- Teacher is this picture his mouth
Bugscope Team the mouth is in the lower middle part. the eyes are on the sides, and the antennae are in the top middle
- Bugscope Team yes, the salt is from wendy's, the fast food joint
- Teacher stink bug
- Bugscope Team this is the mouth, the antennae, and the eyes -- it's the head of a female housefly
- Bugscope Team the stink bug is the shield bug
- Bugscope Team MissCoLib you know we are driving a scanning electron microscope, so we are sending live images
- Bugscope Team and you could drive if you wish to
- Teacher yes it looks great
- Bugscope Team the microscope takes up a whole room, and it has its own air, nitrogen, cooling water, airconditioning...
- Bugscope Team Alex is cruising over to see the stinkbug.
- Bugscope Team it doesn't smell bad now
- 10:55am
- Bugscope Team but it is in a vacuum -- the microscope has a complex vacuum system
- Teacher thank you and we are now going to say goodbye!!!
- Bugscope Team Thank You!
- Bugscope Team thanks for all your questions
- Bugscope Team thank 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 Team MissCoLib i mean :)
- Bugscope Team Hi Jeanne!
- Bugscope Team okay, going to close the session now
- Bugscope Team OKay Bye!
- Bugscope Team rxl stopped, session disabled, nice session folks
