Connected on 2021-04-06 13:15:00
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- 9:36 am
- TeacherSimple chat line
- TeacherTesting non-English: ü, é, ß
- 12:32 pm
- GuestSimple chat line
- GuestTesting non-English: ü, é, ß
- 12:56 pm
- Bugscope Teamhi there
- 1:03 pm
- Bugscope TeamHi all! Sorry again for the mix up, the scheduling is my responsibility, and I messed it up.
- 1:09 pm
- Bugscope Teamwe are setting up the presets and are almost done
- Bugscope Teamjust a couple more minutes and you can have free reign
- 1:14 pm
- Bugscope Teamok feel free to ask us questions and drive around
- Bugscope Teamladybug face
- 1:20 pm
- TeacherThis is the wasp, right?
- Bugscope Teamthis is the face of the ladybug, right now
- Bugscope Teamthe forked thing is one of its mandibles
- Bugscope TeamOn our end it's been necessary to refresh the page so we can see all of the presets (arrow to the left).
- Bugscope Teamthe class did send us several wasps/bees though. a few of them are in the microscope
- Bugscope TeamYou should be able to click on any of the presets on the left (one at a time), and the microscope will drive to that place.
- 1:26 pm
- Bugscope Teamrolypolies are isopods; iso- means the same, and pod means foot; all of their little feet are the same. Fourteen or so feet.
- Bugscope Teamhalf of it fell apart. it was my fault. they do get a little brittle after they die
- Bugscope Teamone of the rolypoly's antennae is gone; that is what the hole is.
- Bugscope Teamit is also missing one of its antenna. that's what that hole was
- Bugscope TeamThis is one of the compound eyes. We don't think they can see very well.
- Bugscope Teamthe background we see is double-sided carbon tape; it's sticky
- Bugscope Teambe sure to let us know if something is not working, or if you have questions
- Bugscope Teaminsects and similar arthropods have exoskeletons, like if you were wearing a coat of armor
- 1:31 pm
- Bugscope Teamin order to be able to sense the outer world, insects/arthropods have setae that stick through the exoskeleton
- Bugscope Teameverything we're looking at is inside the microscope, under vacuum
- Bugscope Teamthis is a photo we took before the session
- TeacherAre the bugs pressed under a lense?
Bugscope Teamthey are placed onto an aluminum stub that is covered in carbon tape.
Bugscope Teamthey are also coated in about 20 nanometers of gold-palladium to make them more conductive
- TeacherVery cool, thanks!
- Bugscope Teamthis is what the inside of the chamber looks like
- Bugscope Teamthe electron beam comes down out of that cone (we can't visibly see the beam)
- Bugscope Teamthis is one of the forelegs of the ladybug
- Bugscope Teamthis four-winged flying insect (that I do not recognize) lost one of its antennae
- 1:37 pm
- Bugscope Teamthe furry-looking thing we see in the middle is the pulvillus
- Bugscope Teamit has sticky villi on it that are called tenent setae
- TeacherAre all of the little "dust-mites" dirt?
Bugscope Teamyes, so far. we can see dust-mites if they are there.
- Bugscope TeamDepending on the mite, they can be softbodied like aphids and thus they are often shriveled up.
- Bugscope Teamlightning storm
- Bugscope Teamthese are eye facets, called ommatidia
- Bugscope Teamon the left
- 1:42 pm
- Bugscope Teamnow we are looking at another compound eye, plus the mandibles, which look like they are clasped together at the tips
- Bugscope Teamthe wasp will have three more eyes on the top of the head where we cannot see them now. They're called ocelli and do not focus light but can sense it; that helps them orient with the sun.
- TeacherWhat is the pointy-thing in front of the eyes? A mouth?
Bugscope Teamthat is the claw. its arm is curled around to in front of its eye. the mouth is to the right of the face
- Bugscope Teamto the right are the mandibles
- Bugscope TeamI think the thing that looks like a glove is the end of the left mandible, folded over the right one.
- 1:47 pm
- Bugscope Teamhead of a rolypoly, sowbug, pillbug
- TeacherIs this the face of the pill bug?
Bugscope Teamyes. the arm looking things coming out the top are the antenna
- TeacherDoes it have eyes?
Bugscope Teamyes but they aren't easily visible. I dont think we can see them on this one. We can on the other
- Bugscope TeamI love the way its arms have that structural infolding
- Bugscope TeamThe eyes are just out of view, on the top of the head
- Bugscope Teamthis is an ant; we can see its mandibles, which open and close like a gate
- 1:53 pm
- Bugscope Teamthe tips of the mandibles are forked
- Bugscope Teamwe don't know how old they are but we can guess, sometimes, when we see that the tips of the mandibles are chipped, kind of worn.
- Bugscope Teamwhen we look at ticks, the small ones with six legs are the young ones; the adults have eight legs
- Bugscope Teamwho is that above the ant?
- 1:58 pm
- TeacherA student was wondering, do y'all look at anything else under this microscope? Or is it specifically for bugs?
- Bugscope Teamwe work with people who are doing research on bacteria, rocks, polymers they have made, insects (sometimes)
- TeacherAlso, we were wondering, do y'all do anything with the new bugs you discover that aren't yet identified as a species?
- TeacherSo, is the exoskeleton a replacement for bones?
Bugscope Teamyes it is! The bones are on the outside, like a knight wearing armor
Bugscope Teamso insects and comparable arthropods have to sense the world using the setae that stick through the exoskeleton
- Bugscope Teamwe've worked with entomologists that will use the microscope to help describe insects and they go on to give them names. Scott may have one or two named after him by now with all the help he's given
- Bugscope TeamThere used to be an entomology professor who came in the work with Cate. He studied parasitic wasps, and had dozens of new species that they imaged using one of these microscopes for publication.
- 2:04 pm
- Bugscope Teamthe parasitic wasps are usually very small; they lay eggs in other insects that eat their way out of their hosts when they hatch
- Bugscope Teamwe are looking a 'true bug' now, called a hemipteran
- Bugscope Teamtrue bugs have piercing/sucking mouthparts like this
- Bugscope Teama bedbug, which would be very small, is a true bug with a pointy mouthpart that can stick part of the way into your skin
- Bugscope Teamthe pointy mouthpart is called a 'rostrum'
- Bugscope Teamthis bug has a broken left antenna, but you can see its rostrum
- TeacherThank you guys! This has been extremely informative and generated much discussion in our room!!
- Bugscope Teamthere is a sharp tip at the end of this one
- TeacherThanks again for this opportunity.
Bugscope TeamPlease come back next year. We will be happy to see you!
- Bugscope Teamthanks for joining us today and sending us some bugs to look at with you
- Bugscope TeamThank you!
- 2:09 pm
- Bugscope TeamThank you, and again, I am so sorry for the mix up.
- Bugscope Teamall good teppie. We recovered