Connected on 2008-11-12 11:00:00 from , NJ, US
- 10:23am
- Teacher just setting things up bare with me i'm doing this for the first time margaret is out sick
- Student are you ready
- Bugscope Team ah, hi, sorry , we are busy doing presets so i didn't see you login.
- Bugscope Team we can be ready soon, we thought the session started at 11AM?
- Bugscope Team either way, welcome to bugscope!
- 10:28am
- Bugscope Team i mean 11AM central, which is noon your time?
- Student Yes noon is the time - I was just logging in to get familiar with the program no rush to get started
- Bugscope Team ok, we'll be done with presets soon, and then you can test out driving the scope
- Student thank you
- Bugscope Team okay grade 5, i just unlocked the session, and you have control
- Bugscope Team if you have any questions at any time, please just ask
- Bugscope Team ready to roll
- Bugscope Team you can control the scope with the controls on the right: magnify, navigation, focus and adjust
- 10:35am
- Bugscope Team Grade 5 are you going to have students log in today from their own computer workstations?
- Bugscope Team that is an option..
- 10:41am
- Bugscope Team Grade 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
- Student no we will not have the kids on individual computers I didn't know that was an option
- Bugscope Team that is ok
- Student It looks pretty easy- what do I do besides clicking on the different presets
- Bugscope Team it 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 Team you can change the mag at the preset you're at, for example
- Student we can get two computers one we'll project image the other we can chat
Bugscope Team that sounds like a good idea
- Bugscope Team you can click on 'click to drive' and then click on the screen to set the stage moving
- Bugscope Team if you use 'click to drive' you will also want to remember to click to stop driving
- Bugscope Team alternatively you can activate 'click to center,' and the stage will center on the place you clicked in the image
- 10:48am
- Bugscope Team if you want to get a close-up view of the membrane on the snail shell opening you can click to magnify
- Bugscope Team and you may want to focus your magnified view
- Bugscope Team if the image goes away, as it just did for me, you can refresh your browser window (usually F5)
- 10:53am
- Bugscope Team hi hhk!
- Bugscope Team we can give you control as Grade 5 or as hhk -- just let us know
- 10:58am
- Bugscope Team presently Grade5 has control of the 'scope
- Student i am having problems see ing all of our slide options
- Bugscope Team ah, try going to full screen mode (F11)
- Bugscope Team if you are running at a screen resolution of 1024x768, then you must expand the browser window to full screen mode
- Bugscope Team it 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
- 11:04am
- Student how should we start with the students they will be here in 5 minutes
- Student our resolution looks good now
- Bugscope Team excellent!
- Bugscope Team you can tell them what we're doing -- that you're going to be driving a scanning electron microscope from the classroom
- Bugscope Team well, students can ask question, and if you can type those questions, we'll answer as best we can
- Bugscope Team you could also give the students control of the scope by letting then use your computer, if you want
- Bugscope Team and that you will be able to drive around and collect images of the samples you (your school) sent
- Student the projected computer the "magnify, click to center, focus, and adjust screens
- Bugscope Team when 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 Team were you saying that you do not see those things on the projected computer image?
- Student yes
- Bugscope Team only one computer will have the controls on it at a time
- Bugscope Team and you can let us know which one you want to use to drive the microscope
- Bugscope Team presently the Mrs. W computer has control
- Bugscope Team this is a compound eye
- Bugscope Team on a fly
- Bugscope Team this is the compound eye of a housefly, and we see fungal hyphae -- the strands of fungus -- as well as spores
- Bugscope Team a compound eye is made up of hundreds of those bumps, which are called ommatidia, each one has a lens in it
- 11:09am
- Bugscope Team if you zoom out you can see more of the eye
- Bugscope Team if you click minus on the magnify control you will be able to see more of the fly's head
- Bugscope Team and if you click plus you will be able to see the spores a little better
- Bugscope Team you can relay the kids' questions to us if you would like
- Bugscope Team do you have an aide helping you or are you solo today?
- Student no there are a few teachers here
- Bugscope Team well feel free to take turns driving, and be sure to type questions for us whenever you'd like
- Bugscope Team you are driving a $600,000 scanning electron microscope
- Student first student question --- what is the diefference between compound eye and a regular eye
- Bugscope Team scot isnt saying that to scare you BTW
- Bugscope Team a regular eye is also called a 'simple' eye, or sometimes an 'ocellus'
- Bugscope Team the compound eye has many facets, called ommatidia, each of which captures an image
- 11:14am
- Student how many facets?
Bugscope Team that 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 Team we see compound eyes in almost all flying insects, but terrestrial insects may have them as well
- Bugscope Team the 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 Team fly eyes do not have pupils
- Bugscope Team if you zoom out, you'll be able to see all the facets in this eye
- Bugscope Team spider eyes, usually eight simple eyes, sometimes seem to have pupils, but it is likely they do not function like ours
- Student do flys have eyelids
Bugscope Team well, 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 Team one 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 Team Hello Guest!
- Bugscope Team Alex is right -- they do not have eyelids. Their eyes are always open.
- Student do you think the fungus grew after they died or was it on theri priorto death
- Student another quesion-- are the eyes damp?
- Bugscope Team it is likely the fungus came along soon after the fly died
- 11:20am
- Bugscope Team I don't believe the eyes are damp the way ours are
- Student do they have eye sockets
- Bugscope Team anything 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 Team they have antennal sockets but it seems they don't usually have eye sockets
- Bugscope Team the eyes after an insect dies can dry out and deflate, which isnormal for an insect to do
- Student are the facets different sizes
Bugscope Team the facets are the same size on an individual insect, but comparing different insects they can be different shapes and sizes
- Student what is the life span
- Bugscope Team the facets can be different sizes; usually they seem to be pretty uniform in a given insect
- Bugscope Team the life span depends on what fly or insect we are talking about -- it may be a few weeks to months
- Student are there a certain number of eggs that they lay
- 11:25am
- Bugscope Team they will usually lay a lot of eggs to ensure survival
- Bugscope Team would someone like to drive the 'scope? you could choose another preset...
- Student we are not seeing teh zoom in screen
- Student we are moving on to the tick head
- Bugscope Team if you are using IE7 you may want to be sure that the browser window is full sccreen
- Bugscope Team cool
- Bugscope Team the magnification controls should be to the right of the image, do you see them?
- Student not on the projected screen
- Bugscope Team magnify on top, navigation below that, then focus and adjust
- Bugscope Team is that computer in full screen mode? (F11)?
- Bugscope Team the controls will only be visible on one screen
- Student does a fly see color???
- Student how do i take it off mine?
- Bugscope Team apparently a lot of insects do see color; I imagine flies do
- Bugscope Team like 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 Team I just switched control to hhk
- Student we are all set now- than you
- Student Does the tick have a compound eye too
- Bugscope Team this is the part of the tick mouth that sticks into you
- Bugscope Team okay, cool, only we can switch control of the scope.
- Bugscope Team ticks do not see to have eyes, not the ones we have seen
- Bugscope Team on the other side the head from here there are eyespots, and when we look at them up close they are tiny holes
- 11:31am
- Bugscope Team ticks can sense heat and may also be able to sense CO2
- Student why do we feel pain when they bite us
- Bugscope Team when they bite the central part we see sticks into your skin
- Student do they have any other food source
- Bugscope Team they only feed on blood
- Bugscope Team when 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
- Student habitat of the tick??
- Student how can we see the 2 parts please help focus on the 2 parts
- Bugscope Team they often live in tall grasses
- Student can ticks rotate their heads
- 11:36am
- Student besides the sides is there any difference between a deer tick and another tick
- Student Can a tick become so engourged that it blows up
- Bugscope Team the 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
- Student can you showus where the mouth is
- Bugscope Team this is the entrance to the mouth, which is parallel to us and down
- Bugscope Team you can see the rasping part of the mouthparts now, toward the bacl
- Bugscope Team that part makes the blood come out of your skin
- Bugscope Team i want to know if ticks can blow up by overfeeding!!! i'm not sure of the answer. scott? cate?
- Bugscope Team yeah they should just drop off you in about a week after feeding
- Student wasp stinger next- preset 10
- Bugscope Team see the cutting edge of the stinger?
- Student can you tell us something about the digestive process of the tick
- Bugscope Team it does not have the more strongly recurved spines the tick has, and it can get its stinger out to sting again
- 11:41am
- Bugscope Team the ticks you have to watch out for are the really small ones-- deer ticks
- Student Is the bee stinger simlar to a wasp stinger
- Bugscope Team The bee stinger is similar but has larger spines that help it stay in your skin.
- Student if the stinger falls off does it grow back
- Student does anything else happen i you get stung besides the pain
- Bugscope Team One 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
- Student is there a length of time for the sting? is it in and ot in a second
- Bugscope Team the stinger does not grow back in a bee -- the bee dies
- Student does the stinger get dull?
- Bugscope Team in a wasp the stinger does not fall off
- 11:46am
- Bugscope Team from our own observations, it appears that a stinger can get dull over time -- we can see wear marks on them]
- Bugscope Team honeybees can only sting once and it dies while the bumblebee can sting multiple times
- Bugscope Team stingers are modified ovipositors
- Bugscope Team the 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 Team and 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
- Student moving to another presets--#13 house centi
- Bugscope Team there are a number of parasitic wasps that lay eggs in caterpillars
- Student can you tell us what we are looking at
- Bugscope Team this is the head of a centipede
- Student is there any skin
- Bugscope Team the centipede is on its back
- Student is there an average number of legs
- Bugscope Team thus you can see all it's legs
- Bugscope Team this is the head of a house centipede
- Bugscope Team the antennae are missing
- Bugscope Team insects don't have skin they have an exoskeleton which is made out of chitin, the same stuff as our fingernails
- Bugscope Team scott, are those called prolegs? or are prolegs only on caterpillars?
- Student is the back the exsoskeleton
- Bugscope Team centipedes go through a number of molts, and if they lose legs they can grow them back in the next molt
- Bugscope Team spiders can do the same thing
- Student what do they eat
- 11:52am
- Bugscope Team yes you find prolegs on caterpillars, which are larval insects
- Student what are there life span
Bugscope Team they have an average lifespan of 5 years but there are some types that can live longer to 7 years
- Bugscope Team centipedes are able to let their legs go, like spiders can
- Student what makes them choose their habita
- Bugscope Team they can have 15 to 150m pairs of legs
- Student do they hear do they have ears
- Student do they have little hairs why??
Bugscope Team actually 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
- Student does it have a compound eye?/
- Bugscope Team they do not have ears, but the setae can help them sense noise/vibration
- Bugscope Team they are said to have simple, not compound, eyes, from what I have been reading
- Bugscope Team we should also say that centipedes and millipedes are arthropods but not insects
- Student diet?
- Bugscope Team arthropods have jointed bodies, exoskeletons, and bilateral symmetry, but not all arthropods are insects
- Student le eye islike a pupil?
- 11:57am
- Bugscope Team setae (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?
- Student does it have organs
- Bugscope Team the simple eye is often called an ocellus, and the ocelli don't have good vision
- Bugscope Team they have inner organs but not quite like ours, and they do not have a circulatory system
- Student Thank you for your help. This has been very informative. Our students will be working with the images on line.
- Bugscope Team they have organs but they arent like ours
- Bugscope Team the organs are bathed in a fluid called hemolymph
- Bugscope Team all the chat and images are saved to you member page: http://bugscope.beckman.uiuc.edu/members/2008-092
- Bugscope Team hhk 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 Team and of course if you have any follow up questions, feel free to email us at: bugscope@itg.uiuc.edu
- Bugscope Team they 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.
- 12:02pm
- Bugscope Team this is a true bug (hemiptera) of some sort
- Bugscope Team anty
- Bugscope Team and this is an ant
- Bugscope Team you can see its jaws, like gates with hinges
- Bugscope Team and its eyes on the side of the head
- Bugscope Team the rolypoly!
- Bugscope Team this is a spiracle on the cricket
- Bugscope Team this is a breathing pore
- 12:10pm
- Bugscope Team a spiracle is like a nose to us, not for smelling but for breathing
- Bugscope Team the little hairs help keep unwanted particles out
- Bugscope Team (i dont think they sneeze though, but I'm not sure)
- Bugscope Team insects can open and close their spiracles to control the amount of air that comes through
- Bugscope Team and also to hold their breath if they get wet or someone puts them in a vacuum
- Bugscope Team this is one of the cricket's mouthparts
- 12:15pm
- Bugscope Team it is a palp, which is an accessory appendage that helps the insect manipulate/taste its food
- Bugscope Team this is a little different from the palps we are used to seeing
- Bugscope Team in that it has the large concavity
- Bugscope Team there are always matching palps, and there are mandibular and maxillary sets
- Bugscope Team hi P-Dog!
- Guest waz up
- 12:22pm
- Bugscope Team hhk are you still there?
- 12:34pm
- Bugscope Team We are going to log off -- let someone else use the 'scope.
- Bugscope Team Thank you for connecting today.
