Connected on 2014-02-27 15:00:00 from Clark County, Washington, United States
- Bugscope Team pumping the vacuum down now
- Bugscope Team almost there. then i will start makng presets
- Bugscope Team there's a bit of mold on these samples. probably mostly my fault for not taking them out of the containers sooner
- Bugscope Team presets are done!
- Bugscope Team hello!
- Bugscope Team welcome to bugscope
- Teacher Hello! We are waiting for more of our small class to arrive.
- Bugscope Team not a problem
- Teacher We are here and are ready to start.
- Bugscope Team hi everyone!
- Bugscope Team hello
- Bugscope Team i have all the insects you sent inside the microscope for today as well as a few bonus insects
- Teacher Student: I wanted to know why color is an issue with this microscope.
Bugscope Team we are using electrons to image and not light. electrons can see details as small as 2 nanometers. light is restricted to resolutions half their wavelengths (their wavelengths being around 400-700 nanometers)
- Bugscope Team the electron images you might see in textbooks or in terminex/orkin commercials had color falsely added to them
- Teacher Student: On average, how many facets are on this insect's eyes?
Bugscope Team this varies quite a bit, it can go from just 7-8 in some ants and insects that don't use their vision much, to 30000 in dragonflies.
- Teacher student: is this a beetle??
- Teacher Is this a hornet or fly?
Bugscope Team it looks more like a beetle.
- Teacher Student: could you show us the ear?
- Teacher student: is this a beetle??
Bugscope Team yes this is a beetle. it's a female ship timber beetle i believe.
Bugscope Team they lay eggs into wood, and they larvae (their young) feed inside of trees
- Bugscope Team what you are looking at here is an insect head, you're looking at it straight on, so it's mouth is directly center of the screen
Bugscope Team its mandibles are the two sort of triangular pieces, the antennae are the two whip like things on the sides
Bugscope Team the eyes are behind all of this, the bumpy surface you see, that is all compound eyes, one on each side.
- Bugscope Team some aquatic insects will also have gills
- Teacher student: what is its family?
- Bugscope Team it looks like the johnson's organ is usually found at the base of the antenna
- Bugscope Team all the fuzzy stuff is mold and fungus. they accrue when the insects are still juicy and are stuck in an enclosed space like a bag or other container
- Teacher Student: I have seen stink bugs before, how is this a stink bugs head?
- Bugscope Team my fault it got so wild because i didn't let them air out when we received them
- Teacher Could you point out the Johnson's organ for us?
Bugscope Team that isn't possible with this scope, but like cate said it's at the pedicel.
Bugscope Team sorry, it's covered and we'd have to dissect the area for you to see it.
- Bugscope Team stink bugs are true bugs. they have a proboscis, like an elephant's trunk, they use to stab and suck juices, either from plants or insects
- Bugscope Team the stinkbug drinks from plants
- Bugscope Team here's a pollen grain!
- Bugscope Team ragweed, which people often have allergies to, look like spiky balls
- Bugscope Team here is a fruit fly. the johnson's organ is within the fat antenna part, I think
- Bugscope Team this was on a beetle antenna. it looks like it senses some kind of chemical information.
- Bugscope Team It almost looked like a spiracle, but you only find those along the body. Spiracles are breathing holes for insects (like noses and mouths for us)
- Teacher Student: There is a spider that uses hairs on its abdomen and legs to trap air and swim, even hunt in the water. How does it do this?
Bugscope Team if you're talking about the spider i think you are, they actually spend most of their time under water
Bugscope Team they make a web with air bubble that is a bell shape, and they sort of wait in there, and dart in and out to grab their prey.
Bugscope Team the bubble is trapped using the fine hairs on its abdomen, as for the actual physical mechanism of how this is done, i'm not entirely sure
- Teacher Could you please put up the slide with the Johnsons organ in it?
- Bugscope Team http://www.nature.com/nature/journal/v458/n7235/fig_tab/458156a_F1.html shows what it looks like on a flyt
- Teacher Could you explain what the Johnson's organ does? Is this it in the view?\
Bugscope Team this is too far along the antenna to be the johnson's organ
Bugscope Team it's kind of like their ear i guess. it senses vibrations from the antennae
- Teacher Student: Could you show us a picture of the ear?
- Bugscope Team antennae are as close as you get to ears on insects. they give insects a lot of input about what is going on around them
- Bugscope Team http://livingwithinsects.wordpress.com/2011/12/19/the-ears-of-mosquitoes/ shows a mosquito, and talks a little bit about 'insect ears'
Bugscope Team both of these links are missing the : after http for me, just a heads up
- Bugscope Team i will show you some spiracles on the stink bug
- Teacher Student: How many spiracles are there?
Bugscope Team depends on the insect, most likely 8-10
Bugscope Team usually a pair per segment from the thorax through to abdomen
- Bugscope Team here is a cool view of an insect eye
- Teacher Student: Is there flesh below the exoskeleton? Like our type of flesh?
Bugscope Team no. it is like a suit of armor and then underneath there are nerves and bug blood with organs in it
Bugscope Team they also have some muscle fibers
- Teacher Student: How is hair coming out of there eye???
Bugscope Team the hairs help with sense of touch, and sometimes to help navigate wind currents
Bugscope Team since they have compound eyes, each of those bulbs (ommatidia) are separated.
Bugscope Team they work together to create a complete image, what they actually see is sort of what you might see on the computer screen if you zoomed in a lot on a picture, pixellated
- Bugscope Team the facets are made of the same stuff as the rest of their exoskeletons- chitin.
- Bugscope Team I wasn't sure if you could call these scales or flat setae, which are bug hairs
- Teacher Student: What makes up the facets in there eyes??!
- Bugscope Team there are nerves under their eyes that transmits information to the brain about what they are seeing. The brain puts the information together into a picture, kind of like how our 2 eyes work together
- Teacher What are these scales composed of?
Bugscope Team they are also made of chitin, like the exoskeleton. They are connected to nerves underneath the exoskeleton. They help tell the insect what is going on around it. They give the insect information like our skin does for us
- Teacher Student: are these hairs sensors?
Bugscope Team the hairs are sensors for insects. what we are seeing here is a claw at the end of a leg
- Teacher Did this claw come from the beetle?
Bugscope Team yes this is from the beetle that had the eyes covering almost the entire head. the wood beetle
- Teacher Student: how do insects with free flowing blood pump it through their heart?
Bugscope Team they don't need to pump blood. Our bodies pump blood to move oxygen through our bodies. Their bodies have trachea, which get area through spiracles on their bodies. The trachea runs along their body and supplies the oxygen that way. The free flowing blood is just a place for their organs to sit in for the most part
Bugscope Team this is mostly true. they do have a heart, that is located in their abdomen, it's essentially a tube, sort of like our oesophagus, which uses peristaltic motions to move food to our stomach, their heart does the same thing, and pumps the liquid back forward toward the head. This is important in thermoregulation and flow of nutrients and waste management.
- Teacher Students: How do we know this? What sensations do they feel? Can you link us to a study?
Bugscope Team C. H. Eisemann, W. K. Jorgensen, D. J. Merritt, M. J. Rice, B. W. Cribb, P. D. Webb and M. P. Zalucki (1984) Do insects feel pain? — A biological view. Cellular and Molecular Life Sciences 40: 1420-1423
- Teacher Student: Do insects feel pain and/or emotion?
Bugscope Team I believe entomologists agree that insects don't feel pain like we do. they can feel sensations but not pain
Bugscope Team they don't have the capacity to do so. the structures that are needed for these complex emotions are not present in insects.
- Teacher ?
- Teacher Student: do insects digest?
Bugscope Team yes. externally or internally
- Teacher What insects digest externally?
Bugscope Team assassin bugs for one. the wheeled bug you see in the summer are a type of assassin bugs
Bugscope Team they inject digestive juices into another insect, and slowly suck the digested innards up.
- Teacher Would that include waterboatman?
Bugscope Team yes the waterboatman do the same thing i believe, but they are not assassin bugs
- Teacher What is a hamuli?
Bugscope Team they are hooks on bees and wasps that hook the fore- and hindwings together
Bugscope Team they make it so that what are 2 pairs of wings act more like 1 giant pair of wings
- Teacher Student: Currently exists (relating to the size question)
- Bugscope Team then when they want to go into an enclosed space, like their hive, they can unhook their wings and fold them around their body
- Teacher Student: What is the largest insect recorded(Size/Species)
Bugscope Team hmm, currently exists or extinct?
Bugscope Team protodonata, are probably the largest ever, and by weight, that would be the giant weta.
Bugscope Team i think by length it is some stick insect in SE Asia, and the titan beetle and goliath beetle would be good ones as well
- Teacher Is that from the Odonata Family?
Bugscope Team what is?
- Teacher *protodonata
- Teacher Is that the ocelli in the middle of the head?
Bugscope Team there are probably ocelli there, but they are hard to see. The holes are where the antennae were. There might be an ocellus between them
- Bugscope Team insects could get very big in prehistoric times because the oxygen was richer. richer oxygen means insects could have bigger bodies.
- Teacher Student: Were there any larger extinct species of insects?
Bugscope Team well, insects in general tended to be larger, hmm not tended, but had the potential to be larger due to the richer oxygen int he atmosphere, so probably.
- Teacher What is the proportion (on average) of the brain to the body/
- Bugscope Team ants have pretty big brains for their size. their brain to body proportion is 1:7.
- Teacher Are there any other insects other than Grylloblattodea that live in the Arctic/Antarctic?
Bugscope Team there can be bees and wasps and butterflies in the arctic, but it's prbably only during the warm season that they are around
Bugscope Team there are midges that apparently live on Antarctica year round
- Teacher Please list the insect orders that are wingless.
Bugscope Team protura, collembola, diplura, archaegnatha, thysanura
Bugscope Team siphonaptera, and there are other insects that can be wingless but not entire orders
Bugscope Team grasshoppers, cockroaches, beetles, wasps and ironically flies all have species taht do not have wings
- Bugscope Team midges are a type of fly
- Teacher We will need to leave you in two minutes.
- Bugscope Team thank you for your great questions. You did a good job thinking of tough ones for us today
- Teacher Are spider beetles considered non-insects?
Bugscope Team no, those are beetles.
Bugscope Team they are deathwatch beetles, sometimes when you hear clicking in your furniture, or like a faint ticking, it's most likely because your furniture is infested with these deathwatch beetles.
- Teacher In my Audubon Spider Beetles are classified as spiders.
Bugscope Team the audubon makes a ton of mistakes in their books.
Bugscope Team spider beetles if they are what i am thinking, should be under anobiidae, ptininae.
Bugscope Team sometimes ptinidae
- Teacher We look forward to following the links and checkin into the study.
- Teacher Thank you we enjoyed chatting and learning with you today.
Bugscope Team you're welcome. it was fun!
- Bugscope Team Have a wonderful rest of the week!