Connected on 2008-11-12 11:00:00
from , NJ, US
- 10:23 am
- Teacherjust setting things up bare with me i'm doing this for the first time margaret is out sick
- Studentare you ready
- Bugscope Teamah, hi, sorry , we are busy doing presets so i didn't see you login.
- Bugscope Teamwe can be ready soon, we thought the session started at 11AM?
- Bugscope Teameither way, welcome to bugscope!
- 10:28 am
- Bugscope Teami mean 11AM central, which is noon your time?
- StudentYes noon is the time - I was just logging in to get familiar with the program no rush to get started
- Bugscope Teamok, we'll be done with presets soon, and then you can test out driving the scope
- Studentthank you
- Bugscope Teamokay grade 5, i just unlocked the session, and you have control
- Bugscope Teamif you have any questions at any time, please just ask
- Bugscope Teamready to roll
- Bugscope Teamyou can control the scope with the controls on the right: magnify, navigation, focus and adjust
- 10:35 am
- Bugscope TeamGrade 5 are you going to have students log in today from their own computer workstations?
- Bugscope Teamthat is an option..
- 10:41 am
- Bugscope TeamGrade 5 you can drive, as Alex said, using the controls to the right of the image, and/or you can choose (by clicking on one) from among the presets to the right of the chat box
- Studentno we will not have the kids on individual computers I didn't know that was an option
- Bugscope Teamthat is ok
- StudentIt looks pretty easy- what do I do besides clicking on the different presets
- Bugscope Teamit allows the kids to type questions of us; if you run off of two computers, instead, someone in the class can type questions while another person drives
- Bugscope Teamyou can change the mag at the preset you're at, for example
- Studentwe can get two computers one we'll project image the other we can chat
Bugscope Teamthat sounds like a good idea
- Bugscope Teamyou can click on 'click to drive' and then click on the screen to set the stage moving
- Bugscope Teamif you use 'click to drive' you will also want to remember to click to stop driving
- Bugscope Teamalternatively you can activate 'click to center,' and the stage will center on the place you clicked in the image
- 10:48 am
- Bugscope Teamif you want to get a close-up view of the membrane on the snail shell opening you can click to magnify
- Bugscope Teamand you may want to focus your magnified view
- Bugscope Teamif the image goes away, as it just did for me, you can refresh your browser window (usually F5)
- 10:53 am
- Bugscope Teamhi hhk!
- Bugscope Teamwe can give you control as Grade 5 or as hhk -- just let us know
- 10:58 am
- Bugscope Teampresently Grade5 has control of the 'scope
- Studenti am having problems see ing all of our slide options
- Bugscope Teamah, try going to full screen mode (F11)
- Bugscope Teamif you are running at a screen resolution of 1024x768, then you must expand the browser window to full screen mode
- Bugscope Teamit sounds like your browser window isn't maximized. Once you make it bigger, you should be able to see a scroll bar so that you can scroll through the presets
- 11:04 am
- Studenthow should we start with the students they will be here in 5 minutes
- Studentour resolution looks good now
- Bugscope Teamexcellent!
- Bugscope Teamyou can tell them what we're doing -- that you're going to be driving a scanning electron microscope from the classroom
- Bugscope Teamwell, students can ask question, and if you can type those questions, we'll answer as best we can
- Bugscope Teamyou could also give the students control of the scope by letting then use your computer, if you want
- Bugscope Teamand that you will be able to drive around and collect images of the samples you (your school) sent
- Studentthe projected computer the "magnify, click to center, focus, and adjust screens
- Bugscope Teamwhen the students start seeing these images, i guarantee they'll start asking questions: what's that thing, why's it so hairy, what's that, ewwww!!!
- Bugscope Teamwere you saying that you do not see those things on the projected computer image?
- Studentyes
- Bugscope Teamonly one computer will have the controls on it at a time
- Bugscope Teamand you can let us know which one you want to use to drive the microscope
- Bugscope Teampresently the Mrs. W computer has control
- Bugscope Teamthis is a compound eye
- Bugscope Teamon a fly
- Bugscope Teamthis is the compound eye of a housefly, and we see fungal hyphae -- the strands of fungus -- as well as spores
- Bugscope Teama compound eye is made up of hundreds of those bumps, which are called ommatidia, each one has a lens in it
- 11:09 am
- Bugscope Teamif you zoom out you can see more of the eye
- Bugscope Teamif you click minus on the magnify control you will be able to see more of the fly's head
- Bugscope Teamand if you click plus you will be able to see the spores a little better
- Bugscope Teamyou can relay the kids' questions to us if you would like
- Bugscope Teamdo you have an aide helping you or are you solo today?
- Studentno there are a few teachers here
- Bugscope Teamwell feel free to take turns driving, and be sure to type questions for us whenever you'd like
- Bugscope Teamyou are driving a $600,000 scanning electron microscope
- Studentfirst student question --- what is the diefference between compound eye and a regular eye
- Bugscope Teamscot isnt saying that to scare you BTW
- Bugscope Teama regular eye is also called a 'simple' eye, or sometimes an 'ocellus'
- Bugscope Teamthe compound eye has many facets, called ommatidia, each of which captures an image
- 11:14 am
- Studenthow many facets?
Bugscope Teamthat depends on the insect-- how much the insect relies on its eyes. Flying insects rely more on sight then insects that live in the ground. So it could be upwards of in the thousands
- Bugscope Teamwe see compound eyes in almost all flying insects, but terrestrial insects may have them as well
- Bugscope Teamthe compound eye is very large, and really helps a flying insect to view its environment. that's why fly's can seem to turn on a dime in the air, they do have good vision. the simple eyes are much less complex and don't have as good vision
- Bugscope Teamfly eyes do not have pupils
- Bugscope Teamif you zoom out, you'll be able to see all the facets in this eye
- Bugscope Teamspider eyes, usually eight simple eyes, sometimes seem to have pupils, but it is likely they do not function like ours
- Studentdo flys have eyelids
Bugscope Teamwell, scott or cate can correct me, but no they don't. they do sometimes have these comb like appendages to their arms (tarsi) and can brush stuff off their eyes
- Bugscope Teamone advantage to having compound eyes is that they are very sensitive to changes in the visual field -- to movement. so flies can see you coming at them and move quickly, as we know
- Bugscope TeamHello Guest!
- Bugscope TeamAlex is right -- they do not have eyelids. Their eyes are always open.
- Studentdo you think the fungus grew after they died or was it on theri priorto death
- Studentanother quesion-- are the eyes damp?
- Bugscope Teamit is likely the fungus came along soon after the fly died
- 11:20 am
- Bugscope TeamI don't believe the eyes are damp the way ours are
- Studentdo they have eye sockets
- Bugscope Teamanything in the atmosphere, we know from atomic force microscopy and from coating glass, almost always has a super thin film of water on it
- Bugscope Teamthey have antennal sockets but it seems they don't usually have eye sockets
- Bugscope Teamthe eyes after an insect dies can dry out and deflate, which isnormal for an insect to do
- Studentare the facets different sizes
Bugscope Teamthe facets are the same size on an individual insect, but comparing different insects they can be different shapes and sizes
- Studentwhat is the life span
- Bugscope Teamthe facets can be different sizes; usually they seem to be pretty uniform in a given insect
- Bugscope Teamthe life span depends on what fly or insect we are talking about -- it may be a few weeks to months
- Studentare there a certain number of eggs that they lay
- 11:25 am
- Bugscope Teamthey will usually lay a lot of eggs to ensure survival
- Bugscope Teamwould someone like to drive the 'scope? you could choose another preset...
- Studentwe are not seeing teh zoom in screen
- Studentwe are moving on to the tick head
- Bugscope Teamif you are using IE7 you may want to be sure that the browser window is full sccreen
- Bugscope Teamcool
- Bugscope Teamthe magnification controls should be to the right of the image, do you see them?
- Studentnot on the projected screen
- Bugscope Teammagnify on top, navigation below that, then focus and adjust
- Bugscope Teamis that computer in full screen mode? (F11)?
- Bugscope Teamthe controls will only be visible on one screen
- Studentdoes a fly see color???
- Studenthow do i take it off mine?
- Bugscope Teamapparently a lot of insects do see color; I imagine flies do
- Bugscope Teamlike scott said, the controls are visible from "Mrs. W" right now. we can switch control to hhk if you want. scott just did that, do you see controls on the projector now?
- Bugscope TeamI just switched control to hhk
- Studentwe are all set now- than you
- StudentDoes the tick have a compound eye too
- Bugscope Teamthis is the part of the tick mouth that sticks into you
- Bugscope Teamokay, cool, only we can switch control of the scope.
- Bugscope Teamticks do not see to have eyes, not the ones we have seen
- Bugscope Teamon the other side the head from here there are eyespots, and when we look at them up close they are tiny holes
- 11:31 am
- Bugscope Teamticks can sense heat and may also be able to sense CO2
- Studentwhy do we feel pain when they bite us
- Bugscope Teamwhen they bite the central part we see sticks into your skin
- Studentdo they have any other food source
- Bugscope Teamthey only feed on blood
- Bugscope Teamwhen a tick sticks the central part of what we see here in your skin, the two parts on either side fold to the left and right
- Studenthabitat of the tick??
- Studenthow can we see the 2 parts please help focus on the 2 parts
- Bugscope Teamthey often live in tall grasses
- Studentcan ticks rotate their heads
- 11:36 am
- Studentbesides the sides is there any difference between a deer tick and another tick
- StudentCan a tick become so engourged that it blows up
- Bugscope Teamthe thing in the center with the recurved spines holds in your skin, and on the other side of it is a part that looks similar but has finer rasping edges to it
- Studentcan you showus where the mouth is
- Bugscope Teamthis is the entrance to the mouth, which is parallel to us and down
- Bugscope Teamyou can see the rasping part of the mouthparts now, toward the bacl
- Bugscope Teamthat part makes the blood come out of your skin
- Bugscope Teami want to know if ticks can blow up by overfeeding!!! i'm not sure of the answer. scott? cate?
- Bugscope Teamyeah they should just drop off you in about a week after feeding
- Studentwasp stinger next- preset 10
- Bugscope Teamsee the cutting edge of the stinger?
- Studentcan you tell us something about the digestive process of the tick
- Bugscope Teamit does not have the more strongly recurved spines the tick has, and it can get its stinger out to sting again
- 11:41 am
- Bugscope Teamthe ticks you have to watch out for are the really small ones-- deer ticks
- StudentIs the bee stinger simlar to a wasp stinger
- Bugscope TeamThe bee stinger is similar but has larger spines that help it stay in your skin.
- Studentif the stinger falls off does it grow back
- Studentdoes anything else happen i you get stung besides the pain
- Bugscope TeamOne thing that is interesting about the tick digestive process is that it can apparently feed multiple times, and because of the way it digests blood slowly, it can transmit an infection from one host to another
- Studentis there a length of time for the sting? is it in and ot in a second
- Bugscope Teamthe stinger does not grow back in a bee -- the bee dies
- Studentdoes the stinger get dull?
- Bugscope Teamin a wasp the stinger does not fall off
- 11:46 am
- Bugscope Teamfrom our own observations, it appears that a stinger can get dull over time -- we can see wear marks on them]
- Bugscope Teamhoneybees can only sting once and it dies while the bumblebee can sting multiple times
- Bugscope Teamstingers are modified ovipositors
- Bugscope Teamthe honeybee dies because the stinger is barbed so it is made to stay in the skin. When it comes off, a part of its insides go with it- a muscle that will pump the venom into the "host" and also it helps to burrow the stinger in deeper
- Bugscope Teamand an ovipositor is the part of a female insect (not all of them) that can inject eggs into something - - from a branch or leaf to a caterpillar
- Studentmoving to another presets--#13 house centi
- Bugscope Teamthere are a number of parasitic wasps that lay eggs in caterpillars
- Studentcan you tell us what we are looking at
- Bugscope Teamthis is the head of a centipede
- Studentis there any skin
- Bugscope Teamthe centipede is on its back
- Studentis there an average number of legs
- Bugscope Teamthus you can see all it's legs
- Bugscope Teamthis is the head of a house centipede
- Bugscope Teamthe antennae are missing
- Bugscope Teaminsects don't have skin they have an exoskeleton which is made out of chitin, the same stuff as our fingernails
- Bugscope Teamscott, are those called prolegs? or are prolegs only on caterpillars?
- Studentis the back the exsoskeleton
- Bugscope Teamcentipedes go through a number of molts, and if they lose legs they can grow them back in the next molt
- Bugscope Teamspiders can do the same thing
- Studentwhat do they eat
- 11:52 am
- Bugscope Teamyes you find prolegs on caterpillars, which are larval insects
- Studentwhat are there life span
Bugscope Teamthey have an average lifespan of 5 years but there are some types that can live longer to 7 years
- Bugscope Teamcentipedes are able to let their legs go, like spiders can
- Studentwhat makes them choose their habita
- Bugscope Teamthey can have 15 to 150m pairs of legs
- Studentdo they hear do they have ears
- Studentdo they have little hairs why??
Bugscope Teamactually a lot of people are surprised to hear that insects have lots of hairs that we call setae (see-tee). they help the insect sense the environment around them through their hard exoskeleton
- Studentdoes it have a compound eye?/
- Bugscope Teamthey do not have ears, but the setae can help them sense noise/vibration
- Bugscope Teamthey are said to have simple, not compound, eyes, from what I have been reading
- Bugscope Teamwe should also say that centipedes and millipedes are arthropods but not insects
- Studentdiet?
- Bugscope Teamarthropods have jointed bodies, exoskeletons, and bilateral symmetry, but not all arthropods are insects
- Studentle eye islike a pupil?
- 11:57 am
- Bugscope Teamsetae (hairs) are cool. they can help the insect sense its environment in multiple ways. some setae are mechanosensory (movement), and others are chemosensory (chemical receptors), and there are others still. those setae stick through the exoskeleton and are connected to nerves underneath, that is how they feel and sense things. very cool huh?
- Studentdoes it have organs
- Bugscope Teamthe simple eye is often called an ocellus, and the ocelli don't have good vision
- Bugscope Teamthey have inner organs but not quite like ours, and they do not have a circulatory system
- StudentThank you for your help. This has been very informative. Our students will be working with the images on line.
- Bugscope Teamthey have organs but they arent like ours
- Bugscope Teamthe organs are bathed in a fluid called hemolymph
- Bugscope Teamall the chat and images are saved to you member page: http://bugscope.beckman.uiuc.edu/members/2008-092
- Bugscope Teamhhk it would be good to drive to all presets if you have time so that they can become part of your database for this session
- Bugscope Teamand of course if you have any follow up questions, feel free to email us at: bugscope@itg.uiuc.edu
- Bugscope Teamthey have a very simple organ structure compared to us. A three-part gut breaks down food and absorbs all the nutrients the insect needs. A single vessel pumps and directs the flow of blood. Nerves join together in various ganglia to control movement, vision, eating, and organ function.
- 12:02 pm
- Bugscope Teamthis is a true bug (hemiptera) of some sort
- Bugscope Teamanty
- Bugscope Teamand this is an ant
- Bugscope Teamyou can see its jaws, like gates with hinges
- Bugscope Teamand its eyes on the side of the head
- Bugscope Teamthe rolypoly!
- Bugscope Teamthis is a spiracle on the cricket
- Bugscope Teamthis is a breathing pore
- 12:10 pm
- Bugscope Teama spiracle is like a nose to us, not for smelling but for breathing
- Bugscope Teamthe little hairs help keep unwanted particles out
- Bugscope Team(i dont think they sneeze though, but I'm not sure)
- Bugscope Teaminsects can open and close their spiracles to control the amount of air that comes through
- Bugscope Teamand also to hold their breath if they get wet or someone puts them in a vacuum
- Bugscope Teamthis is one of the cricket's mouthparts
- 12:15 pm
- Bugscope Teamit is a palp, which is an accessory appendage that helps the insect manipulate/taste its food
- Bugscope Teamthis is a little different from the palps we are used to seeing
- Bugscope Teamin that it has the large concavity
- Bugscope Teamthere are always matching palps, and there are mandibular and maxillary sets
- Bugscope Teamhi P-Dog!
- Guestwaz up
- 12:22 pm
- Bugscope Teamhhk are you still there?
- 12:34 pm
- Bugscope TeamWe are going to log off -- let someone else use the 'scope.
- Bugscope TeamThank you for connecting today.