Connected on 2008-09-22 09:00:00
from , TN, US
- 8:55 am
- Bugscope TeamGood morning!
- Bugscope Teamhello welcome to bugscope!
- TeacherThis is the IT guy for now, while Mrs. Angelo is getting ready.
- Bugscope Teamhi IT guy, i'm an IT guy too
- TeacherGreat! Are there folks here from several locations?
Bugscope Teamall the admins are bugscope members, but yes they are logged in from different locations
- Bugscope Teami just unlocked the session, you should be able to see controls on your right side of the browser window (mag, nav, focus, adjust)
- TeacherOk. Will the session be limited then to just our 3rd grade class?
Bugscope Teamyes, this is a session for your class only.
Bugscope Teamsometimes guests might log in, but if you want the session to yourself, we can boot off guests, no problemo
- TeacherAnd you guys/gals.
- Bugscope Teamyes the session will be limited to your class -- your school
- Bugscope Teamsometimes we have guests who log on; they show up in yellow on the list above left
- TeacherDon't think we mind at all. Kids will be back in a few.
- Bugscope Teamall of us in green are here to help, to answer questions from the kids
- Bugscope Teamokay, we's be ready!
- 9:00 am
- Teacherkids are coming in. They're pretty excited!
- TeacherWhat bug are we looking at?
Bugscope Teamthis is an owlfly larva
- Bugscope Teamit has powerful jaws that grab insects
- Bugscope Teamit's adult form looks a lot like a dragonfly
- Bugscope Teamso both the larva and the adult are predatory
- Bugscope Teamthe "antlers" are the opened jaws
- Bugscope Teamit is related to antlions and lacewings
- 9:07 am
- Bugscope Teamadult owlflies look a lot like dragonflies with long antennae
- TeacherDo they fly?
Bugscope Teamthe adults do, these don't
- Bugscope Teamyes, the adult fly in the evening.
- TeacherAre those eye lashes?
Bugscope Teamthey do kinda look like eye lashes, but no, those are called setae. (see-tee) setae are little hairs that stick out from the exoskeleton. they function kid of like cat whiskers: they help the insect to sense its environment
- Bugscope Teamthe larvae obviously don't fly, because they have no wings
- Bugscope Teamthe eyes are the things sticking out with bubbles on it
- TeacherWhy is it called an owlfly?
Bugscope Teamthey get their common name because the adults have huge eyes and fly at night (like owls). They are also predators, like owls
- TeacherThese Q's are being asked by our students btw. Thx.
- 9:12 am
- Bugscope Teamyou can get to another insect by clicking on a preset to the right
- TeacherIs the larva about 1 cm in size?
Bugscope Teamnotice the scale bar on the lower left in the image, that gives you an idea of size. 1 um = one micron = one millionth of a meter
- Bugscope Teami think it's smaller than that
- Bugscope Teamthey grow larger as they get older
- TeacherWhy are there so many hexagons in a moths eye?
Bugscope Teamthis is a compound eye, and each hexagon is called an "ommatidia", each ommatidia has a lens in it, which is stuck looking strait ahead, they can't move their lens like humans can. and they are shaped like hexagons so that the eye surface can curve a little bit as needed, which gives the insect a wider view range.
- TeacherIs that a piece of dust on the moth's eye?
Bugscope Teamand yes I think that is a piece of dust or dirt
- Bugscope Teameach of the individual parts of the compound eye are called facets
- 9:17 am
- Bugscope Teamthey are shaped as hexagons because that is the best shape to allow for the curvature of the eye
- Bugscope Teamflying insects will usually have larger eyes than insects that live underground. The moth's eye are so big that it usually gives them almost a 360 degree view of what's around them
- Bugscope Teamyou might have to focus a little more to see them better
- Bugscope Teamthats the way!
- Bugscope Teamnice focus job!
- 9:22 am
- TeacherWowwww! :)
- Bugscope Teamwow, 22,000 times magnification, this is some of the higher mag we'll see when looking at insects
- TeacherWhy does it look like they have tiny eyes on this single facet?
- Bugscope Teamsometimes we go higher, say to 40,000x, but rarely more than that. even so, the scope can magnify up to 800,000x!
- Bugscope Teamthese could be similar to the cones that are used for night vision, which makes sense since moths fly at night
- Bugscope Teami'm afraid with the eyes, this is probably the best we are going to be able to see of them
- Bugscope Teambut you are doing a great job!
- TeacherOk. we're going to look at the Ladybug now.
- Bugscope Teamand with these presets, you can take down the mag so you can get a better idea of where you are at
- Studentwe somehow got bumped out a second. But we're back.
Bugscope Teamack, sorry, not sure what happened. welcome back!
- Bugscope Teamthis is a place where the wing is suspended over the elytra, which is the hard shell on the ladybug's back
- Bugscope TeamLadybugs are actually beetles in the family Coccinellidae (pronounced Cox-in-el-i-dee)
- Bugscope Teamas a student, now, we gave you control again
- 9:27 am
- StudentAbigail asks what those spike looking things are?
- Bugscope TeamMost ladybugs are predaceous, and eat other insects. But a few feed on plants and are considered agricultural pests
- Bugscope Teamso this is the edge of the wing, and those are setae that extend off the edge
- Bugscope Teamif you take the mag lower you will be able to see where you are
- Bugscope Teamthis ladybug was a little beat up
- Bugscope Teambut it is cool to be able to see something we don't normally see
- Bugscope Teamat the bottom of the image now we see the 'shell,' or the elytra
- Bugscope Teamto the upper right is the abdomen
- Bugscope Teamusually we mount insects on their dorsal side -- the back -- so we can get a ventral view -- the side that has the legs on it
- Bugscope Teamat the top of the screen you see folded forelimbs
- StudentCody asks what that bump thing was in the middle of the high magnafied image with the spikes?
Bugscope Teamthat might have been more juju (dirt or dust or something similar)
- StudentPrevious image.
- StudentWilliam asks what part are we looking at now?
Bugscope Teamwe are looking at the underside of the ladybug. this is somewhere on its abdomen
- 9:33 am
- Bugscope Teamladybugs like to die with their legs clasped together as well, which you can see with its upper legs
- StudentAutumn asks what are the bubbles?
Bugscope Teamthat is the double stick carbon tape, which we lay all the insects on
- Bugscope Teamnow we are looking at the head, but it is behind those forelegs
- Bugscope Teamwhen we mount insects on the aluminum stub we put down the tape you see, and it has those bubbles in it
- StudentDoes a ladybug have compound eyes?
Bugscope Teamyes they do
- Bugscope Teamthe area around the ladybug is where Cate also put silver paint down to help the ladybug stick and to make a good conductive path for the electrons to escape
- Bugscope Teambut we can't see them from this view
- Bugscope Teamthe eyes are on either side of the head, and they are streamlined into the head
- Bugscope Teamthey don't stick out far
- Bugscope Teamthis is what the scales look like at high magnification
- Bugscope Teamthey relfect light in colors that depend on the spacing of those ladder-like structures we saw at high mag
- Bugscope Teamreflect, that is
- 9:38 am
- StudentMalia asks are these the scales that are on its wing?
Bugscope Teamyes they are
- Bugscope Teamthis is what makes a moth or butterfly feel soft when you touch it
- Bugscope Teamthe scales come off very easily
- Bugscope Teamto us they seem like dust
- Bugscope Teambut they help insects that have them by letting them slip out of spider webs
- Bugscope Teamnow you can see the fine details of the scale
- Bugscope Teamthere will also be, sometimes, little pigment graniules in the spaces we see now
- StudentBrianna asks do all insects have compound eyes?
Bugscope TeamMost insects do. There are a few very primitive insects have have very primitive eyes, and there are some insects that live in caves or other dark places that have lost their eyes since they live in places where they don't need to see
- Bugscope Teamnow you may be able to go a little higher in mag if you wanbt
- Bugscope Teamwant
- Bugscope Teamnice job driving the microscope
- StudentMikhail wants to know if those are holes in the wing?
Bugscope Teamyep! wing scales have those holes so the wings stay light, make it easier to fly
- Bugscope TeamMonarch butterflies are not very tasty, and spiders will often just cut them loose if they get stuck in their webs
- StudentRagan asks why do they look like spiderwebs?
- 9:44 am
- Bugscope Teamthe latticework makes it look much like a spiderweb, doesn't it?
- Bugscope TeamI had not noticed that before.
- Bugscope Teamthe spaces between the vertical lines are about 2 micrometers long
- Bugscope Teamthat is as long as a rod-shaped bacterium
- Bugscope Teamif there were bacteria here we would be able to see them
- StudentHolly and Kiera want to know what those vertical lines between the connecting lines?
- Bugscope Teamall of the vertical and horizontal lines hold the shape of the scale together
- Bugscope Teamscales are very much like feathers, on a bird
- Bugscope Teamthis is one of the beetle tarsi
- 9:49 am
- StudentMrs. Angelo wants to know what is a Tarsi?
- Bugscope Teamtarsi are what the 'forearm' segments of the leg or arm are called
- Bugscope Teamthe individual segments are sometimes called tarsomeres
- Bugscope Teamnow we also see three claws
- StudentElijah asks what are the spikes?
- StudentWilliam says they look like dinasaur are bones. :)
- Bugscope Teamthe spikes are probably for protection, and they also help the beetle feel what is touching it
- Bugscope Teamthey are kind of like bones on the outside rather than the inside
- Bugscope Teaminsects have exoskeletons -- the 'bones' are on the outside
- StudentAibgail asks do spikes also help him catch prey?
- Bugscope Teamnot like us
- StudentRagan asks are all beetles legs like that?
- Bugscope Teamthey are often very similar
- Bugscope Teambut some beetles have pads on the legs that allow them to stick to vertical surfaces
- 9:54 am
- StudentMikhail asks are bettles predators and prey?
Bugscope TeamThere are more species of beetles than any other group of insects in the world. Some beetles are predators and some are primarily plant or fungus eaters. Lots of other animals eat beetles, like birds, mammal, other spiders, etc. So yes, beetles can be predators or they can be preyy
- StudentEli wants to know if some beetles are crustaceans?
- StudentThis is a very cool image of a mite!!!
- StudentKiera asks what the large spike it to the left of the mite?
Bugscope Teamthat is a setae on the millipede
- Bugscope Teamseta*
- Bugscope Teamcrustaceans are different from beetles, but they do look similar in some ways
- StudentEli wants to know if the mite is alive?
- Bugscope Teamthe mite "went down with the ship" when the millipede died -- it died too
- Bugscope Teamthese particular mites, which we see fairly often, do not have eyes
- StudentAre those probes attached to the millipede?
- StudentIf so, why is that?
- 10:00 am
- StudentRagan asks how long do mites live, and can they fly?
Bugscope TeamThere are lots of mites, and they can live anywhere from a few weeks to more than a year. They cannot fly--mites are arachnids, and they don't have wings. There are no arachnids that fly.
- StudentAll the third graders say, !
- StudentMs. Angelo says, the reason this was operated so well
- Bugscope Teamnot a lot of people study mites, so we don;t know too much about them
- Studentis because our computer teacher was operating the microscope! (confession!)
- StudentAll the 3rd graders say "Thank you very very much!!!"
- Bugscope TeamThat you all!
- Bugscope Teamthank you students!
- Bugscope Teamand carolyn, you did a great job too! thanks!
- StudentThanks. This was very cool!
- Bugscope Teamthank you all
- Bugscope TeamThank You!
- Studentreal quick, are those mite's probes actually attached to the millipede?
- Bugscope Teamyeah they are stuck down
- Bugscope Teamsometimes you can see it more clearly -- they have little rounded ends
- Bugscope Teamlike the lunar module
- Studentare they feeding that way or something?
- 10:05 am
- Bugscope Teamwe think they feed on what comes along on the surface, presently we do not think they penetrate the cuticle and feed off of the hemolymph
- Bugscope Teamoften it is tempting to consider that, though
- StudentStill looks cool though. Thanks.
- Bugscope Teamthey are not well studied,a
- Bugscope Teamthank you for asking -- please consider coming back next year
- StudentWe certainly will. I'm sure you have some idea of how valuable this is, so again.
- StudentThanks a million!
- Bugscope Teamthis is our favorite thing to do
- StudentAm I able to save any of these images?
Bugscope Teamcarolyn, check our your bugscope member page, all chat and images are saved: http://bugscope.beckman.uiuc.edu/members/2008-069
- Bugscope Teamthey are all saved to your database
- Bugscope Teamyou have access to them
- StudentGreat! Thanks. Signing off.
- StudentGot it! See you next year!
- Bugscope Teamcool! great sessions
- 10:11 am
- Bugscope Teamsession locked, rxl off, session disabled. nice session everyone!