Connected on 2015-01-09 10:00:00 from Pinellas County, Florida, United States
- Bugscope Team setting up for today's session...
- Bugscope Team sample is in the chamber and pumping down
- Bugscope Team vac ok; we're almost ready to start making presets
- Teacher Students will be here in 35 mins. See you then!
- Bugscope Team sweet!
- Bugscope Team wea
- Bugscope Team try that again
- Bugscope Team we are ready to roll!
- Teacher Students are beginning to log in
- Bugscope Team Hello Mira, hello Maddie!
- Bugscope Team Welcome to Bugscope!
- Student hello
- Bugscope Team please let us know when you have questions, about anything....
- Bugscope Team the sharp things we see on the front of the head are the beetle's mandibles
- Bugscope Team Hi Rylee! Hello Lance! Hi Anastasia!
- Student hi this is so cool
- Bugscope Team Welcome to Bugscope, everyone!
- Student Hello
- Teacher Let's let Mira take control first :)
Bugscope Team Mira is the supreme ruler.
- Bugscope Team this is a small beetle -- I think it is a rove beetle, but I am not sure.
Bugscope Team rove beetles belong to the insect family staphylinidae. staphylinidae is one of the most specious families of insects, with close to 60,000 species described world wide. Most rove beetles are carnivores. They have tiny truncated forewings, which you unfortunately cannot see here as this rove beetle is on its back
- Bugscope Team this is the top of the head, where we can see sparse setae, which look like hair to us
- Student what are mandibles?
Bugscope Team they are the jaws. in people, the lower jaw is called the mandible, and the upper jaw is called the maxilla
Bugscope Team they are used to grasp and sometimes pierce, prey
Bugscope Team Scientists tend to reuse the same words for similar structures in different organisms. most insects for example also have a second set of mouthparts called maxilla, which are also used to grasp and chew food
- Student what are the craters behind the beetle
Bugscope Team those are pits or bubbles in the doublestick carbon tape we use to help hold the insects onto the stub
- Student cool
- Student wher are the eyes
Bugscope Team they are on the sides of the head -- you can see them now, maybe
- Student Are those hairs or antennae?
Bugscope Team The large, multisegmented protrusions just above the mandibles are the antennae. insects only have two antennae but have many thousands of hairs, which we entomologists refer to as setae
- Student thank you
- Student how strong are its jaws?
Bugscope Team Not sure exactly. If it bit you most likely it wouldn't be able to pierce the skin. Rove beetles tend to be pretty small.
- Student How big is the beetle withought magnifacation?
Bugscope Team less than a centimeter, like 8 or 9 millimeters, I think
- Student Hello
Bugscope Team Hello, Fabi!
- Student That is one small beetle
- Student hello
- Student what are the protrusions? many of us want to know
Bugscope Team the ones on the side of the head are the compound eyes
- Teacher Let's let Noah have control now :)
Bugscope Team Noah is the pope of the 'scope now
- Teacher can he change "bugs" ... I can't remember?...
Bugscope Team yes, by clicking on one of the presets, to the left
- Bugscope Team this is a very small assassin bug
- Bugscope Team and here we see two mites, hanging from web between the limbs of the assassin bug
- Student If the bateria is helpful what does it do for this orginism?
Bugscope Team not all bacteria are helpful, but it's possible they could help break down something an insect would want to eat, for example.
- Student How large is the mite
Bugscope Team we can see from the micron bar on the lower left that the mites are maybe 300 microns long, which is 3/10ths of a millimeter
- Student you are punny
- Teacher Josh needs to go to Second City in Chicago... :)
- Student Wow that's small
- Student do mites have antena
Bugscope Team no they don't, as far as I know
- Student are mites parasitic?
Bugscope Team some are parasitic, and some serve a beneficial purpose
- Student How long have these been dead and how are they preserved
Bugscope Team they are dry -- that is the only preservation they have; they have been dead for various times, part of our collections
- Student Why is it called a assasin bug?
- Student what does this bug do
Bugscope Team it pierces the chitinous exoskeleton of other bugs and drinks the hemolymph and liquefied internal organs
- Student What do the mites to the assasin bug?
Bugscope Team Drew we are not sure what they are doing there; we are not sure they were there when the assassin bug was alive.
Bugscope Team some mites are ectoparasites that feed off of insects hemolymph (i.e. their blood); others are what we call phoretic, which means that they simply use insects for transport, kind of like how we used to ride horses to get from place to place. Some mites are also beneficial to insects in that they feed on waste and bacteria on the insects cuticle and keep them clean. These relationships are known as symbioses
- Student Are those white bubble things eyes?
Bugscope Team correct!
- Teacher Do you all see the two mites from from the previous slide?
- Teacher Let's let Fabiana have control
- Student why are there holes in its body
Bugscope Team some of the holes we may see are from pins that had been inserted in the thorax once the insect died to keep it as a specimen
- Student Are those leg segments on the assasin bug have sockets?
Bugscope Team they sometimes have what look like ball and socket joints where they are connected to the body
- Student what does the assasin bug use to catch food?
Bugscope Team it uses a venom that dissolves the internal components of other insects/arthropods and then sucks them up like a milkshake; it uses its proboscis
Bugscope Team assassin bugs have relatively spiny forelegs, which they use to get a firm grip on their prey while they stab it with their proboscis (called a rostrum in true bugs) and inject them with their venomous saliva. in this respect assassin bugs forelegs are similar to praying mantis forelegs, although praying mantises have a much more extensive adaptation
- Teacher Can Fabi have control
Bugscope Team Fabi is in charge.
- Student I am usually would be very distgusted right now, but at the moment I am astonished
Bugscope Team haha!
Bugscope Team welcome to our world kid
- Bugscope Team these are tiny setae ('hairs') that we call tenent setae; they are found on a pad called a pulvillus that helps the insect cling to a surface, like a ceiling
- Student are these on its legs
Bugscope Team yes they are on little pads that are attached the forelimbs
- Teacher They are like knitting needles that help the beetle defy gravity
Bugscope Team never heard it described like that before haha.... like the beetles are knitting sweaters in their spare time ;)
- Student How small are pulvilie?
Bugscope Team I think in the tens of microns. A micron is a millionth of a meter and a thousandth of a millimeter.
- Student what are thoses needle like things made of?
Bugscope Team most likely they are composed primarily of cuticle, or exoskeleton. An insects exoskeleton is composed primarily of a chemical called chitin.
- Student how big is that not magnified
Bugscope Team this looks like a little grain of powder to us; it is I think a hundred microns long
- Teacher Can Riley take control?
- Student Cool thats the wing!!Its like minature wings that help it fly right?
Bugscope Team they're kind of like feathers, but another purpose of them is to protect the insect bearing them from getting caught in a spider web. because they come off easily...
- Student why would they have crystals on there wing
Bugscope Team the crystals are not adaptive, the insect just hasn't bathed in a while I suppose...
- Teacher I mean Rylee... sorry Rylee ;(
Bugscope Team Rylee is now the Supreme Commander.
- Student whats on the wing? it kind of looks like rocks
Bugscope Team yes when we see tiny things like this they may be some kind of mineral, sometimes crystallized chemicals
- Student are there several wings or just 2
Bugscope Team these are just wing scales here -- ones that were loose and ended up on the body of the grasshopper
- Student how many little" rocks" are their on its wings?
Bugscope Team there should be few -- it's kind of an accident or chance that there would be 'rocks' there
- Student what is a diatom
- Bugscope Team sorry Rylee it looks like this shifted since we made the preset
- Student it looks like a shrviled up old man
- Student how are the wings attatched to the grasshopper?
Bugscope Team the wings themselves are composed mostly of chitin and are essentially nonliving, although they do have hemolymph flowing through them. they attach to the body by a series of membranous flaps and chitinous rods that allow the insects thoracic muscles to move them, similar to how you would row a boat using oar handles from inside the boat
- Student its okay
- Bugscope Team there are a lot of diatoms on the dried slime from the snail, but that one is especially cool looking
- Bugscope Team this is one of the pulvilli
- Student it looks like a comb
Bugscope Team yes it does
- Student what is the white thing in the middle
Bugscope Team that was a flake of something, just a piece of debris to us
- Student On the pulvilus is their a sticky substance that helps it climb?
Bugscope Team yes I believe there is often a fine sticky substance
- Student what is the diatom
Bugscope Team a diatom is a single-celled alga (an algae)
Bugscope Team diatoms tend to have very elaborate crystal like structures that they build around themselves. diatoms come in a spectacular array of shapes and sizes, they're quite beautiful as far as single celled organisms go
Bugscope Team they have a sexual and asexual phase, they will continuously split into two getting smaller and smaller until a point and go into a sexual phase.
- Student is this a type beetle?
Bugscope Team this is part of a beetle; I don't remember which, now
- Student what are thooses scales?
Bugscope Team the things that look like scales now are the pads, called pulvilli (singular pulvillus)
- Teacher Can Anastasia take control now, please? :)
Bugscope Team got it!
- Student can we break the microscope
Bugscope Team but then you won't see anything
Bugscope Team are you asking permission or if its physically possible for you to damage it from your location?
- Student Am I in control
Bugscope Team yes you are!
- Student what is a snail made of?
- Student i mean is that sand ;)
- Student It looks like fungus on a furry tree is it?
Bugscope Team sort of...
- Student Since this bug has a tibial it has bones so can bugs have artiritis?
Bugscope Team haha. It's more that we appropriated a word used for bones and used it to describe the exoskeleton.
Bugscope Team like mandible and maxillae being used in insects and humans to describe mouth parts.
Bugscope Team plus most insects don't feel pain
- Student Are those rocks inside the shell
Bugscope Team what we see when we look up close are the shells of diatoms, which are made of silica; they also look like rocks
- Teacher Anastasia is going to zoom in on the compound eye...
- Student I mean accidently
Bugscope Team I doubt you could. Scot would know more than I though
Bugscope Team we have things set up so it would be very difficult to break the 'scope over the web
Bugscope Team Theres probably a higher probability that Scot would spill coffee on it and break it that way than you guys doing anything
- Student it looks like a honey comb
- Student it looks like the eye is a honeycomb but its a compound eye right? And so can they see out of each hexagon?
- Student sorry?
- Student cool
- Student why does it have things that look like hair right next to the eye
Bugscope Team I think that was strands, or a strand, of fungus
- Student can you determine the age of the snail based on the size?
Bugscope Team in part, but it could be undernourished, so I am not sure how well that would work
Bugscope Team you can tell based on the relative amount of shell growth, not so much based on overall body size. I had a malacologist as a professor freshman year (a scientist who studies molluscs) who was always showing off by aging snails for the class, so its possible if you know what youre doing
- Teacher Can Lance have control now?
Bugscope Team Lance is now in charge.
- Student What is a ommotidia?
Bugscope Team ommatidia (singular ommatidium) are the facets of the compound eye
- Student Is each hexagon like an eye?
Bugscope Team it's like the outer lens face of a single sensor, and in a way it is a single eye
Bugscope Team each of the hexagons will help complete a part of the whole picture
- Student I'm so nervous
Bugscope Team haha Nothing to it.
Bugscope Team If Scott can do it so can you right? :)
- Student what are we looking at?
Bugscope Team this is a whirligig beetle
Bugscope Team whirligig beetles are pretty amazing
- Student Is that the jaw?
Bugscope Team those were the mandibles, or jaws
- Student cool thank you Scot J
- Student how big are the ants jaws?
Bugscope Team they're on the hundreds or even tens of microns scale, depending on the ant; 100 microns is a tenth of a millimeter
- Teacher We have 4 students left to operate the SEM :)
- Student How does it open its mouth to eat?
Bugscope Team insect mouths are complicated, and there are many variations; this one has mandibles and also a clypeus, in the middle; it opens like a garage door
Bugscope Team for the mandibles specifically, in ants there is a mandible abductor (opener) muscle inside the head that attaches to an interior tip of the mandible and moves the entire mandible open when it contracts. Again, the analogy of rowing a boat with oars works here
- Student what is the hairs
Bugscope Team the hairs are important because insects do not have skin, like we do, with nerve endings in it; the hairs, called setae, stick through the exoskeleton, which is like a shell, and they help sense chemicals, hot/cold, touch, etc.
- Teacher Can Drew have control now?
Bugscope Team Drew has control...
- Student Can't a ant carry pick up 100 times it's own body weight?
Bugscope Team something like that, but its not so much that the ant is very strong as it is that physics works a little bit differently at that size and allows them to have more efficient muscles. Most insects can probably claim a similar feat
Bugscope Team If someone increased the ant to our size, it would simply collapse under the weight of its own exoskeleton
- Student do the hair looking like things help them with anything
Bugscope Team yes they help them taste, smell, feel hot/cold, sense chemicals in the air (such as pheromones), and also sense touch and wind
Bugscope Team some of these hairs let them know where their own legs and appendages are, since they have a hard shell, they can't feel the outside world like we do.
Bugscope Team *exoskeleton
- Student i mean are the hairs;(
Bugscope Team they can be thermosensory, chemosensory, mechanosensory, used for proprioception, and they can also be wing scales
- Student what is on the eye
Bugscope Team mostly we see long wing scales and fungus -- fungal hyphae
- Student Is the stuff on the eye metallic spray? If not what is it??
Bugscope Team it's a lot of debris from being stored with other insects
- Student how big is the grasshopper with out zooming in?
Bugscope Team it's several cm long
- Student But I thought the exo-skeleton protected it??
Bugscope Team It does, but exoskeletons are only practical if you are under a certain size. in order to increase muscle power you have to increase the amount of exoskeleton you carry around. there is an upper limit to how efficient that can be. Its why we don't see beetles the size of cars when we look out the window
- Teacher Can Madison have control, now?
- Student it looks like a dager
Bugscope Team it's a little hard to see now, but there is a venom pore in the tip
- Student Awesome thanks Josh1!
Bugscope Team No problem Rylee :) I used to work with someone named Rylee (he spelled it different though), he studied butterflies
- Student do ants inject venoum if so do they use it to catch their food?
Bugscope Team yes to kill/subdue their food
- Student cool
- Teacher Can Madison have control?
Bugscope Team Maddie has control.
- Student thanks scot
- Student What type of bacteria is it???
Bugscope Team those are almost all bacilli -- the rod-shaped bacteria; specifically, we don't know for example if they are E. coli...
- Student How do ants use their stingers
Bugscope Team they have venom in the stingers that can hurt and also in some cases paralyze their prey
Bugscope Team They of course also use their stings in defense of their colony from larger organisms, as you are well aware of if you've ever sat down on a fire ant nest mound
- Student How small is the bacteria on the beetle?
Bugscope Team bacilli -- the rod-shaped bacteria -- are usually about 2 microns long
- Bugscope Team this is the top of the head of a fruitfly
- Student What are the little hairs near the eyes?
Bugscope Team they're setae that help sense wind speed, and touch
- Student Why is there a dent in the compound eye did you find it that way?
Bugscope Team the dents happen with drying and usually after the insect has died
- Student how dors the eye get dented
Bugscope Team usually what happens is drying makes it collapse
- Student is it true that flies barf every time they land?
Bugscope Team there are all different types of flies, but some, with sponging mouthparts, do that frequently
Bugscope Team Its not so much barfing per se. since the flies have sponge like mouthparts they cannot chew their food (you try crushing something with a sponge sometime), and instead spit up their digestive saliva on their food, which predigests it into a liquid form and allows them to sponge it up with their mouthparts.
- Student Do different bugs have different shapes in the compound eyes?
Bugscope Team the individual facets tend to be hexagon in shape still, but the number of facets vary quite a bit between different species.
- Teacher Can Olivia be supreme ruler of the SEM now?
Bugscope Team Queen Olivia, coronated at this moment.
- Student how many bugs are in the lab?
Bugscope Team we have hundreds to thousands of dry ones and some in liquid that we can dry properly so they don't shrivel
- Student Lets hope I don't break this I have a tendancy to do that.
Bugscope Team haha Good Luck!
- Student Do the wing scales have microscopic holes in them or is that something else
Bugscope Team they do indeed have tiny holes in them; they are much like feathers
- Student How long have you worked with the microscope?
- Student It looks like those crakers in chek mix.
Bugscope Team yes, and sometimes they look like Ruffles potato chips
- Student cool
- Bugscope Team the divisions between the ridges can interfere with the light that comes from the scales, and it can thus result in us seeing different colors depending on the angle at which we see the scale
- Bugscope Team the ridges are about the length of a bacterium
- Bugscope Team the width of the ridges, that is
- Teacher Can Hannah have control now? She's the last student :(... We don't want this to end... it's amazing!!
Bugscope Team Hannah has been quite patient throughout.
- Bugscope Team where are you guys from?
- Student How far apart are the fragments of this image without magnification?
Bugscope Team they are too small for us to see with the unaided eye -- we can only see the scales as tiny bits of powder
- Teacher Tarpon Springs, Florida... near Tampa
Bugscope Team Oh.... probably a little bit warmer down there than in Champaign right now I'd imagine ;)
- Student wow
- Bugscope Team wow
- Student How long did you have htis job?
Bugscope Team I am a masters/PhD graduate student in entomology. I am a volunteer. Ive been volunteering since September of 2014
- Student Super cool is it on the wasp body??
- Bugscope Team these are the wing clips that hold the fore and hindwing together for bees and wasps, which have four wings but fly with two stuck together on each side
- Bugscope Team oops now we're looking at the head...
- Bugscope Team this is the mouth of the whirligig beetle
- Teacher Actually we are freezing this week - way too cold for us! 45 when we woke up today :(
Bugscope Team Its 7 here...
Bugscope Team lol.
Bugscope Team is it actually in single digits? I thought it was cold but didn't realize
Bugscope Team according to weather.com, its 8, but it feels like its -11. If it makes you feel any better, its -45 and foggy in Yakutsk, Siberia! knowing now much it must suck to live there is what gets me through the winter
- Student At least its not negatives
Bugscope Team yesterday morning it was -3 outside
- Teacher Thank you so much for this experience - the students LOVED it. My grade 5 did it last year and it's now a tradition in my class :)
Bugscope Team Awesome!
- Teacher OK students thank them and say good bye :)
- Student bye
- Student What are those little arclike figures
Bugscope Team those are mandibles
Bugscope Team super sharp
- Student i feel bad for you
Bugscope Team I'm safe in the basement of the Beckman Institute, 23 feet underground. The weather never changes down here.
Bugscope Team I'm still laying in bed in my jammies. Nice and warm
- Student Thank you guys sooooooooooooooooooooooooooooooooooo much this was awesome
- Student Goodbye
- Bugscope Team Thank you, Everyone!
- Bugscope Team We enjoyed working with you.
- Student thank you sooo much this was sooooooooooooooooooooooooooooooooooooooooooooo cool !!!
- Student we are floridians were not used to cold
- Bugscope Team No problem :) glad to help. Bye everyone! Stay in school
- Student thank you and dont freeze to death!
Bugscope Team haha Thank you, Hannah!
- Teacher See you next year with another group of students!
- Student THANKS I wish I could do this again
- Student Thank you, bye, i really enjoyed bugscpoe! It was awesome, stay warm.
- Student please dont freeze
- Student keep warm
- Bugscope Team See you next year!
- Bugscope Team Thanks! Have a good weekend!
- Teacher That's ridiculous! I need it 78 and balmy every day!
Bugscope Team haha, right?!
Bugscope Team Its okay really. Its a wet cold....?
- Student bye
- Student This was a amazing experience. Don't catch hypothermia!
- Student thank you soooooooooo much it was soooooooooo cool bye don't turn to ice
Bugscope Team Thank you, Mira!
- Bugscope Team Bye!
- Student no were in 5th grade
- Student :) :) :) :) :) :) :)
- Student I used to not like bugs other then bees and butterflies now I do thanks bye
Bugscope Team Sweet!
- Student you guys are the best
Bugscope Team Thank you, Lance!
- Student you are the best
- Student Bye
Bugscope Team Bye Maddie!
- Student bye
Bugscope Team Bye Hannah!
- Student you guys rock
- Student bye
Bugscope Team See you, Anastasia!
- Student bye
Bugscope Team Bye Drew!
- Student :] i really liked it
Bugscope Team Yay! It is super fun for us.
- Bugscope Team alright we are shutting down
- Bugscope Team Thank You, Mrs. Hogan! See you next year!
- Bugscope Team Thank you, Ellsworth!