Connected on 2014-10-27 12:00:00 from El Paso County, Colorado, United States
- Bugscope Team We are in the process of preparing the sample. The scope will be online shortly to set up presets for the noon session.
- Bugscope Team Sample being retrieved from the sputter-coater now.
- Bugscope Team Hello, Greg. We're putting the sample into the scope now.
- Bugscope Team It will be a few minutes before we start setting the presets. This process will take a total of about 30 minutes. Once that's done, we'll let you know here that you can begin using the scope. OK?
- Bugscope Team We're setting the presets now.
- Bugscope Team We're done setting presets.
- Bugscope Team we are ready to roll!
- Bugscope Team You're good to start.
- Teacher Hello, we are ready!
- Bugscope Team yay!
- Teacher What are we looking at?
- Bugscope Team Go for it. I was just running through the presets myself to confirm they work, but you can control the scope yourself now.
- Bugscope Team Greg I am sorry -- we received your insects but didn't have time to get them assembled onto a stub.
- Bugscope Team this is the claw of one of the yellowjackets
- Bugscope Team At the moment, we are looking at a yellowjacket - a type of hornet - claw.
- Bugscope Team It is one of the "hands" of the yellowjacket.
- Bugscope Team unfortunately neither of the two yellowjackets had a good stinger
- Bugscope Team here we can see one of the claws quite well, and we can see long setae that help alert the yellowjacket that something is in its grasp -- that is what look like hairs
- Bugscope Team there is also a rolled-looking pad to the right of the claw that is the backside of the pulvillus, which helps the insect cling to surfaces
- Teacher Are those hairs?
Bugscope Team Yes. They are termed "setae" because they aren't made the same way as human hair. The setae are used to detect movement, temperature, and chemicals (they can "taste") depending upon the stype of setae.
Bugscope Team It is probably better to think of them as "bristles" rather than hair, but for convenience, we often (here, not scientifically) use the term hair or hairy.
- Bugscope Team to us it looks as if, depending on the insect, some pairs of claws open and close and some are just static -- they do not open and close to grasp things and let them go
- Bugscope Team You can do the driving now. Click on the blue arrow to expand the list of presets, then click once on the preset to move there.
- Bugscope Team If you want to move around in this (or any other image), just click on a point in the image to center it.
- Bugscope Team the second claw we cannot see here...
- Bugscope Team To zoom in our out, use the "+" and "-" buttons next to the word "Magnification" at the top. (If those aren't showing up, please let us know.)
- Bugscope Team Right now Scot is tweaking the image to show you what he thinks is some spider web.
- Bugscope Team Feel free to interrupt him at any time by clicking on a preset or moving around yourself.
Bugscope Team In fact, each change he makes doesn't show up in your database, so it is helpful to make some of the changes yourself if you want to see the images after the session is over.
- Bugscope Team here we can see some bristles, between segments of one of the limbs, called tarsi or tarsomeres, that help the yellowjacket sense when it has moved its arm
- Teacher Is that dirt in between the bristles?
Bugscope Team Probably. We see quite a bit of that. Often it is hard to tell.
Bugscope Team However, if it is biological - usually fungal, but occasionally bacterial or pollen - we can spot that immediately.
- Bugscope Team sometimes we find bacterial biofilms
- Bugscope Team some types of bacteria secrete and lay down a liquid film that they can all live in
- Bugscope Team Greg please try again and let us know, or we'll see...
- Bugscope Team Yay!
- Bugscope Team this is the eye of a tiny moth
- Teacher FYI - We can't seem to click on any of the other images
Bugscope Team Try again.
Bugscope Team We have a setting here that may not have been set right.
Bugscope Team Did you do that? I hope so!
- Bugscope Team this is the compound eye, just a part of it
- Teacher What are those specks?
Bugscope Team Mostly dust.
Bugscope Team If you zoom in, you'll see something really interesting.
- Bugscope Team so far it is mostly dust -- the larger thing may be a desiccated bacterium
- Bugscope Team Each of these hexagon shapes are a single ommatidium - together they make up the compound eye
- Bugscope Team good job driving!
- Bugscope Team the fine features we see are about 300 to 400 nm in diameter, so you are imaging on the nanoscale
- Bugscope Team It is hard to focus at this magnification.
- Bugscope Team There's some spiderweb.
- Bugscope Team Each eye (which you can see mostly in full if you zoom all the way out) is made up of smaller ommatidia. UGH. TJ just beat me! :)
Bugscope Team muahhaha ;)
- Bugscope Team we can see some spiderweb to the right
- Bugscope Team this is so cute!
- Bugscope Team Ladybug larva. Kind of punkish.
- Bugscope Team they eat aphids
- Bugscope Team sometimes we will find aphid bodies on the bodies of the ladybug larvae
Bugscope Team aphid corpses, just in time for Halloween!
- Bugscope Team the ladybug larva does not have compound eyes; they will not form until it becomes an adult
- Bugscope Team instead it has maybe five 'stemmata' on each side of the head
- Bugscope Team In movies - "bug vision" is portrayed as the insect seeing the same image out of each panel - so multiple images of what ever it is looking at
Bugscope Team This is not how insects see though
Bugscope Team Insects actually end up seeing more of a slightly blurry image of whatever they're looking at
Bugscope Team They have a great viewing radius - but don't nearly have as good of eye sight as humans
Bugscope Team This bugs me (hahaha - get it) about TV shows that give you a dual-image view through binoculars. It's like to director has never been bothered to actually use a pair, ever.
- Teacher What are those spikes for?
Bugscope Team I think they are for protection against getting eaten and or stung
Bugscope Team Probably defensive, but TJ - our entomologist - would probably say more. They give the appearance of being threatening, but in actuality aren't. (That doesn't mean that all spikey insects *aren't* nasty. The saddleback caterpillar comes to mind.
Bugscope Team As far as my knowledge goes - the spikes are more for helping camouflage though they are likely to also help with looking threatening
- Bugscope Team with earwigs we can tell because the pincer tails are close together in females and bowed and further apart with males
- Bugscope Team Sitting for a portrait...
- Bugscope Team with mosquitoes and some moths, the antennae of the males are far more ornate than those of the females
- Teacher Are those antennae?
Bugscope Team Yes. The tips are broken off, unfortunately.
- Teacher Where are the eyes?
Bugscope Team they're off to the sides , you can see the notch on the right one
Bugscope Team The front one is just under and to the right of the antenna.
Bugscope Team you can also make out one of the ocelli on the top there
- Teacher Can you tell male or females?
Bugscope Team with some insects we can tell easily, and with some we would have to break the insect open to see
Bugscope Team with flies, the male compound eyes are often close together, to almost touching, whereas those of the females are far apart
Bugscope Team For insects with a larva stage - you can't tell if the insect will be male or female
Bugscope Team Because the larva stage focus is primarily growth - the insect puts no energy into gender until they pupate
Bugscope Team when they pupate - they activate these parts of their body called imaginal disks which will allow the larva to gain all of the features it lacked before - wings, proper legs, proper antennae, proper eyes, gender, etc
- Bugscope Team Scott is zooming in.
- Bugscope Team now we can see the left compound eye better
- Teacher Ocelli?
Bugscope Team ocelli are "simple" eyes that detect light
Bugscope Team I just clicked on the ocellus preset
Bugscope Team their purposes aren't well understood, but are hypothesized to help with motion detection, circadian rhythms, and navigation during flight
Bugscope Team they don't actually convey an image to the insect
- Bugscope Team this is uncommon-looking salt
- Teacher Are they always cracked like that?
Bugscope Team only this kind of salt has those shapes
- Bugscope Team Wendy's salt
Bugscope Team looks kinda like the allspark ;)
Bugscope Team or the cube from the game portal
- Bugscope Team we can see the ocelli now, on the back of the head
- Bugscope Team we can see the antennae, on the top of the head, now
- Teacher What does the antennae do?
Bugscope Team Scott's writing a long reply, but it just disappeared. He's starting over.
Bugscope Team the antennae serve a few functions. the base has internal components that help it tune in on the wingbeats of other flies
- Bugscope Team in addition, the antennae can sense chemicals in the air, allowing the fly to follow those chemical trails to their sources
- Bugscope Team here we are looking right into the mouth of the cucumber beetle
- Teacher Is that the mouth?
Bugscope Team yes it is!
- Bugscope Team we can see two sets of palps, which help taste and manipulate food
Bugscope Team you beat me to it
- Bugscope Team and we can see the mandibles (the jaws), which open left and right, like a gate
- Bugscope Team the central part is called the clypeus, and it moves up and down, as well, as the beetle eats
- Bugscope Team let them eat salt
- Bugscope Team Moth scales.
- Bugscope Team so pretty!
- Bugscope Team moths, butterflies and skippers, silverfish, mosquitoes, and few other insects have scales
- Bugscope Team Got a bit of a bald spot there.
Bugscope Team Don't say it, Scott.
- Bugscope Team scales come off easily
- Bugscope Team they provide protection from spiderwebs
- Bugscope Team although this particular moth seems to have been bundled up into a spiderweb
- Teacher Can moths grow scales back?
Bugscope Team no they cannot
- Bugscope Team once an insect grows wings, it is an adult, and after that it does not regrow anything
- Bugscope Team the downside to having wings
- Teacher Tarsus?
- Bugscope Team the last five or so segments of a limb are called the tarsi
- Bugscope Team or tarsomeres
- Bugscope Team the claw is also technically one of the tarsi
- Bugscope Team I am an electron microscopist, and Daniel is a plant person/computer scientist/renaissance dude.
- Bugscope Team this is cool
- Bugscope Team this is the tip of one of the palps
- Teacher What is a palp again?
- Bugscope Team it has chemosensory setae on it, like tastebuds
- Bugscope Team TJ and Joe are entomologists and can correct me when necessary
Bugscope Team :)
Bugscope Team you have a lot of entomology under your belt Scott
- Bugscope Team the palps are accessory mouthparts, like feelers, that help the insect taste and also manipulate its food
- Bugscope Team Thanks! Bye!
- Teacher Okay, we need to leave now. Thank you so much. We learned a lot!
Bugscope Team Thanks for participating! We had fun.
Bugscope Team Thank you - I'm glad you learned a lot and had fun :)
- Bugscope Team Thank You!
- Bugscope Team http://bugscope.beckman.illinois.edu/members/2014-060
- Bugscope Team we think the salt has an anticaking agent in it that makes it form those crystals
Bugscope Team Why would someone not want cake? Cake is delicious! :)
Bugscope Team the cake is a lie
Bugscope Team What you crazy? Cake - especially spice cake - is yummy.
Bugscope Team portal - empty cake promises
Bugscope Team Eh? Portal? Promises? You kids and yer smarty phones and what not.