MOREnet
Session 2008-031

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Transcript

Connected on 2008-07-14 14:00:00 from Columbia, MO, US

• 12:51 pm
• Bugscope Teamin early
• 1:09 pm
• Bugscope Team1.3 x 10-3
• 1:15 pm
• Bugscope Team3.0 x 10-4
• Bugscope Team2.8...
• Bugscope Teambrb
• Bugscope Teambrp
• Bugscope Team2.3
• Bugscope Team2.2
• Bugscope Team2.1; that was a long step
• Bugscope Team2.0
• 1:21 pm
• Bugscope Team1.9 the final stretch
• Bugscope Team1.8
• Bugscope Teamcinco minutos
• Bugscope Team1.7
• Bugscope TeamI think we'll be good to go by 1:35
• Bugscope Teamokay chief
• Bugscope Teamstill 1.7
• 1:26 pm
• Bugscope Team1.6
• Bugscope Team1.6...
• Bugscope Team1.5
• Bugscope Team1:32
• 1:31 pm
• Bugscope Teamwell scott made it sound like he wanted it on the stub, so i put it on :p
• Bugscope Team1.4... what do you think should we do a surgical strike?
• Bugscope Teamif its 1.4...we can make it
• Bugscope Teamhi wppl, welcome to bugscope
• Bugscope Team1.3....
• Bugscope TeamHi wppl!
• Bugscope Teamwelcome to bugscope
• Bugscope Teamwe are setting up for the session, we've got a juicy bug in the scope today, the vac is taking it's time to get to pressure
• Bugscope Teamwe are just about ready to start the presets. because as Alex says we have a fresh one in the chamber
• 1:37 pm
• Bugscope Teamand we have had to wait for the vacuum to get down enough to start the 'scope
• Bugscope Teamhi columbia public, welcome to bugscope!
• Bugscope Teamwe are still setting up the presets for you, we'll be done by 2PM central time

• 1:42 pm
• TeacherSounds good! See you then...

• 1:48 pm

• 1:53 pm

• 2:00 pm

• Bugscope Teamokay we are almost ready, columbia would you like to drive? or do you want us to drive for you like last time?

• TeacherLet

• TeacherSorry, let's try that. If that's not working, we'll let you know.
• Bugscope Teamwe gave you control just now -- go ahead and try driving!
• TeacherWe're doing an intro here first...
• 2:05 pm
• Bugscope Teamokay, whenever you are ready, just ask away
• Teacherthanks!
• Bugscope TeamYou should see controls on the computer you're using now.
• Bugscope Teamto the upper right, and the presets below, from which you can choose.

• Bugscope Teamthis is the head of a giant wasp
• Bugscope Teamyou can see the compound eyes on either side of the head, and the antenna's above the eyes

• Bugscope Teamand it's got it's tarsi (legs) in front of it, kind of like it's sitting indian style

• Bugscope Teamthe spider!
• Bugscope Teamwe found this today, on the steps

• Bugscope Teamthis is one of the wasps

• Bugscope Teamyou can select a preset if you wish, as well
• 2:10 pm

• TeacherCAn you describe more about this picture?
• Bugscope Teamhere you can see, actually two combs on the ant's forelimbs
• TeacherWhat are the ant combs for?
  Bugscope Teamit cleans the antennae or compound eyes of the ant/wasp
• Bugscope Teamthe combs are used by the ant to clean it's antenna's

• Bugscope Teamants seem always to have them, and we believe they use them to keep their antennae clean

• Bugscope Teammuch the same way a comb is used by humans to comb their hair
• Bugscope Teamantennae are very important. ants were into wireless a long time before we were.
• Bugscope Teamsome ants don't even bother to have eyes, and some have eyes but they don't do much other than register dark or light

• Bugscope Teamthis one is missing one of its antennae
• Bugscope Teamthis is an ant's head, notice that the left antenna is broken, ack!
• Bugscope Teamyou can see the ball and socket joint where the one was
• Teacheris there a way to get to the presets without scrolling away from the main picture?
  Bugscope Teamyou should be running at a screen resolution of at least 1024x768, preferably 1280x1024. if you can't do that, then try click on F11, which will take your browser to full screen mode
• Bugscope Teamthis ant has very big eyes for an ant. as scott said, some ants dont have eyes
• Bugscope Teamif you want to go closer you can use click to center and then click the mag up
• Bugscope Teamand the ant has a little mustache! like 10 whiskers or something like that.

• Bugscope Teamyou should be able to move the bar on the right and that will make the presets scroll

• 2:16 pm

• Bugscope TeamLooks like you are doing a great job driving. It takes a little practice.
• TeacherThanks!
• Bugscope Teamif you use click to center you can focus the beam on an eye, or on the antenna base, or on the mouth, for example
• Bugscope Teamthe mouth looks like a gate, with hinges
• Bugscope Teamthere are a lot of presets (16 total), I dont think there is a way to get out of scrolling through the presets
• Bugscope Teamant's, like most insects, have compound eyes, each compound eye is made up of hundreds of individual facets called ommatidia

• Bugscope Teamand there are lots of extra palps, as usual, that make the ant look like it ate something
• Bugscope Teamthis is the tip of the abdomen
• Bugscope Teamah, here is a, uh huh, wasp abdomen, aka wasp behind
• Bugscope Teamthe number of facets there are depends on how much the insect relies on sight
• Bugscope Teamsome ants have stingers here, and some have acid ejectors

• TeacherNow we're looking at the wasp abdomen...
• Bugscope Teamyep, this is the wasp abdomen
• Bugscope Teamyou can see here that the cuticle is made like armor, and that is important to think about when you consider insects
• TeacherWe're discussing the stinger...
• Bugscope Teamsome ants fly, as well

• Bugscope Teamstingers on bees/wasps are modified ovipositors
• Bugscope Teamyou can see that this wasp has four wings
• 2:21 pm

• Bugscope Teamwhen it flies the wings are connected so that there are only two functional wings
• Bugscope Teamthe fore- and hindwings connect in flight using tiny hooks called hamuli
• Bugscope TeamI think we made a preset showing a few hamuli
• Bugscope Teama lot of flying insects have two compound eyes and three ocelli -- simple eyes -- as well
• Bugscope Teamthe ocelli are on top of the head, with one centered

• Bugscope Teamah the hamuli
• Bugscope Teamthis is on the portion of the hindwing that connects with the edge of the forewing
• Bugscope Teamlittle hooks, or clips

• Bugscope Teamthis is a stinkbug

• Bugscope Teamsometimes we can see the area where the stink comes from, and it is interesting because stinkbugs themselves do not like the stink
• Bugscope Teamsee the eyes?
• Teachermy true bug picture isn't coming up...
• Bugscope Teamall these images are in black and white, or rather in shades of grey. that is because the scope is using electrons to gather the image.
• Bugscope Teamstinkbugs are true bugs, and one of the crtieria for true bugs is that they have piercing mouthparts
• Bugscope Teamah, if the image goes black, try refresh (F5)
• 2:26 pm
• Bugscope TeamI just clicked on it here...

• Bugscope Teamcan you see it now?
• TeacherNot yet, still see the hamuli
• Bugscope Teamcan you try hitting refresh (F5)?

• TeacherI hit F5
• Bugscope Teamokay, still nothing?

• Teachernow we see it. thanks!
• Bugscope Teamcan you see the face of the true bug?
• Bugscope Teamyay!
• Bugscope TeamYay!
• Teacheryes!
• TeacherNow they are talking about his
• Teachermouth...
• Bugscope Teamsee the antennae, and the eyes, and the proboscis?
• Bugscope Teamit goes down pretty far onto the thorax
• Bugscope Teamyeah, the proboscis is the long thing running down the middle of it's face

• Bugscope Teaman interesting side note: the largest proboscis in the world is the elephant trunk
• Bugscope Teamnow you can see it, oops

• Bugscope Teamnow we are near the tip of the abdomen
• Bugscope Teamif you drive by click to center you can cruise right up toward the thorax
• 2:31 pm

• Bugscope Teamthis is a mystery for us
• Bugscope Teamit seems like a breathing pore -- like a spiracle
• Bugscope Teamon the head of the rolypoly

• Bugscope Teamthat hole there, is what scott was talking about

• Bugscope Teambecause it is open and the rest of the head is covered with junk it seems likely that it was kept clear by breathing through it

• Bugscope Teamthese guys/gals are detritovores

• Bugscope Teamthey eat detritus
• Bugscope Teamspiracles are holes, usually on the body of insects, which are connected to the respiratory system inside the insects. it's how bugs breath.
• Bugscope Teamsee the big thick antennae?
• TeacherWe're chatting about common names for some bugs...
• Bugscope Teamthis is a crustacean, and it breathes a little differently
• Bugscope Teamwoodlouse, rolypoly, sowbug, pillbug
• Bugscope Teamah, yes, scott is right, crustacean's are different than insects. my fault
• Bugscope Teamrolypoly is the pretty common name i think
• Bugscope Teamactually there is a difference between two that look very similar
• 2:36 pm

• Bugscope Teamspider eyes

• Bugscope Teamnow we see four of the presumably eight
• Bugscope Teamsometimes spiders have fewer than eight eyes

• Bugscope Teamthey also have plumose setae -- more feathery setae that are very sensitive to vibration

• Bugscope Teamspiders can autotomize their legs if they wish -- they can just let one fall away if they sense it was bitten and poison is entering the wound
• Bugscope Teamthis is the abdomen, which is quite shrunken
• TeacherWill they grow another leg?
  Bugscope Teamsometimes. it depends if it is a spider that is still molting or not.
• Bugscope Teamif you take the mag up you may be able to see the spinnerets

• Bugscope Teamthey can occasionally grow other legs -- I'm not sure this kind of spider can, though

• Bugscope Teamfangs!

• 2:42 pm
• Bugscope Teamtarantulas can grow new legs on the next molt, as Cate says

• Bugscope Teamhere you can see the creepy part
• Bugscope Teamthe fangs are pretty impressive, but you can also see that there are shorter tooth-like projections that hold the prey close to the spider
• TeacherHow do spiders keep from sticking to their own webs?
• Bugscope Teamspiders can, for one thing, eat their way out of their own webs

• Bugscope Teamthey also can make web that is not sitcky and use that to walk on

• Bugscope Teamthey are good recyclers and will ingest their web at the end of the night

• Bugscope Teamthe cool part again
• Teacherhow many different species of spiders exist in the world
• Bugscope Teamlook at all of the sharp projections where we expect to see only two

• 2:47 pm
• Bugscope Teami know there are around 4,000 species in north america, according to my kaufman guide
• Bugscope Teamsometimes we get to see the pores in the tips of the fangs

• Bugscope Teamspiders suck the juice out of their prey like they're milkshakes
• Bugscope Teamaccording to wikipedia, there are around 40,000 species in the world
• Bugscope Teamthe venom they inject makes tasty internal organs turn to liquid so they are easily slurped up
• Bugscope Teamthis is the claw of the beetle, and we can tell from looking at it that it is likely not able to climb on walls or ceilings

• Bugscope Teamif we could compare it to the claw of a climbing beetle we would see that the other beetle has lots of tiny setae near the claw that help it stick to vertical and upside down horizontal surfaces
• Bugscope Teamthese are the forelimbs, called the tarsi, or tarsomeres

• 2:52 pm
• Bugscope Teamthe fore-portions of the limbs, not the fore limbs

• Teacherwhat is this part?

• Bugscope Teamthis looks like a shot of the tibia and the femur of the insect's leg
• Bugscope Teamthis is one of the limbs, and most of it is pointed toward us so we can't easily see it

• Bugscope Teamyou can see where the bases of the legs come out of the thorax
• Bugscope TeamThe little round part at the base is called a coxa
• Bugscope Teamyou are driving a scanning electron microscope. it has its own room, its own air, nitrogen, water, and electricity
• Bugscope Teamthe sample is in a vacuum chamber
• Bugscope Teamand the electron beam is scanning across whatever portion of the sample we are viewing
• 2:57 pm
• Bugscope Teamif the electron beam goes across a small area we can get a highly magnified image bacl

• Bugscope Teamnow you can see some of the dog hair that slowed this beetle down
• Bugscope Teamits large jaws form that upside down V shape

• Bugscope Teamyou can see that the mouth is very busy, with lots of palps that help the beetle taste and manipulate its food
• Bugscope Teamthe tiny hairs we see on insects, called setae, can have mechanosensory or chemosensory functions
• 3:03 pm
• TeacherI think we are wrapping up here. Thank you so much for your time and expertise!
• Bugscope TeamThank You!
• Bugscope Teamno problem! thank you for your questions and participating in bugscope today!
• Bugscope TeamThank you for driving and for asking good questions!
• Bugscope Teamthank you columbia public, all the chat and images from this session will be saved on your bugscope member page: http://bugscope.beckman.uiuc.edu/members/2008-031
• TeacherThat was a fantastic opportunity!
• Bugscope TeamYay! It is fun for us.
• Bugscope TeamPlease consider coming back next year.
• TeacherWe can tell that you really enjoy working on this project.
• Bugscope Teamthis is a kick
• Bugscope Teamwe get lots of cool things to look at and we get to work with great people
• TeacherWe look forward to the opportunity to work with you all again!
• Bugscope Teamit is nice when the kids get a chance to log on as well, but sometimes it is not possible
• Bugscope TeamThank you.
• Bugscope Teamthank you
• TeacherThanks!!!!
• Teachersigning off...
• Bugscope TeamSee you next time!
• Bugscope Teamokay, shutting down the rxl and the session. nice session everyone