Connected on 2015-04-22 10:30:00 from Contra Costa County, California, United States
- Bugscope Team we are ready to roll!!!
- Teacher Hi There! So for our mix up earlier. The kids will be coming in from recess shortly and we will get started!
- Bugscope Team hi!
- Teacher Hi Cate! Just to brief you before my kiddos come in. We are a group of 4th graders at Quail Run Elementary in San Ramon, California. I am going to let you show us things on the microscope (we're using just one computer) the kids have some pre made questions for you they came up with. We have been learning about adaptations so anything you can show us would be great. I am going to get the kids from the playground I will let you know when we are all back! We are so excited!
- Bugscope Team super cool
- Bugscope Team yes please let us know when you have questions
- Bugscope Team and also, please feel free to use the controls to drive around, perhaps to see all of the presets on the left hand screen
- Bugscope Team driving the 'scope to those places (clicking on the presets) will ensure that the images are saved to your member page for today's session
- Bugscope Team http://bugscope.beckman.illinois.edu/members/2014-088
- Teacher Hi Scot and Cate! We are the 4th Graders!
- Teacher We are so excited. What are we looking at right now?
- Teacher Our guess is that this is a house fly? Are we correct?
Bugscope Team fruitfly. close
- Teacher Our student Stella guessed correctly!
- Guest Hey Scot could you shoot me an email with the log in info? Not on my personal comp and I forgot it.
- Bugscope Team no problem, just a sec
- Bugscope Team we can see, to the right, the compound eye, which has hundreds of facets, called ommatidia
- Bugscope Team each ommatidium is capable of collecting an image, and the images are processed by the fly's brain to produce a large view of its surroundings
- Bugscope Team a large percentage of a fruitfly's brain is devoted to visual processing
- Teacher Can you show us some cool things about this fly?
Bugscope Team This is a close up of the eyes. Each of the facets are called ommatidium.
Bugscope Team they work together to complete an image for the fly. The end result being a picture that is sort of pixellated and low resolution
Bugscope Team instead of the typical popular media depiction of the kaleidoscope/multiple full images
- Bugscope Team this fly is upside down, from our view
- Teacher Do you have any other cool insects you can show us?
- Bugscope Team the mouth is in the middle, left, lower portion of the image
- Teacher The students are curious, why does the fly have so much hair?
Bugscope Team Since insects are covered with an exoskeleton. they have the hairs to be able to sense their environment
Bugscope Team they dont have skin that feels like ours does
- Bugscope Team fruitflies are said to like to eat the yeast that forms on decaying fruit
- Bugscope Team I moved us to the other one, which is more upright
- Bugscope Team the three spots up top are the ocelli
- Bugscope Team they're also called 'simple eyes'\
- Bugscope Team we can see that on the top of its head it has three smaller eyes
Bugscope Team these eyes are supposedly used for quickly sensing changes in light/dark
- Bugscope Team there are scales from other insects, like moths or butterflies, on the back of its head, which is to the left
- Bugscope Team the hole we see is a thoracic spiracle -- a breathing pore on one side of the thorax, which the head, legs, and abdomen are attached to
- Bugscope Team we are looking into the spiracle now
- Bugscope Team it is connect to tubes called tracheae that run inside of the body and deliver oxygen to internal organs
- Bugscope Team we see, also, those things that look like long skinny potato chips
- Teacher So does the fly have lungs?
Bugscope Team they do not.
Bugscope Team rather they have a tracheal system as Scot stated.
- Bugscope Team those are more scales, from a butterfly, perhaps
- Teacher Do you have a different bug to show us?
- Bugscope Team Wow!
- Bugscope Team we are lucky that insects do not have a more efficient means of breathing, because if they did they might be able to get bigger
- Teacher WOW!!!!
- Bugscope Team this is a female mosquito
- Bugscope Team we have some wasps, an ant, some pollen, a true bug, a moth, and aphids
- Bugscope Team This is an amazingly intact mosquito
Bugscope Team with most of its scales still on
- Bugscope Team oh and a beetle
- Bugscope Team Cate made this sample for us yesterday and did a great job getting it so perfect
Bugscope Team +1
- Bugscope Team So, in this shot, we're looking at the mosquito head on.
- Bugscope Team you can see the compound eye, like those of the fruitfly, but the ommatidia are like little balls rather than smoothed segment
- Bugscope Team rather than smoothed segments of each eye...
- Bugscope Team the round things in the middle are called pedicels, which are the bases of the antennae
- Teacher This question is from Anirudh
- Bugscope Team mosquitoes have their own scales, one function of which is to protect the mosquito from getting caught in spiderwebs
- Teacher Like bubble wrap!
Bugscope Team it is a bit like thatg
- Teacher Why do some of the ommatidia look deflated?
Bugscope Team even though we dry the mosquitoes a special way, called critical point drying, some of the ommatidia will collapse when they become dry
- Teacher Our student Purajit would like to know what is the biggest difference between the mosquito and the fruit fly?
Bugscope Team the mouthparts
Bugscope Team the fruit fly has sponging type mouth parts, where as the mosquito has piercing sucking mouthparts
Bugscope Team the fruit fly's mouth works by sponging up the (probably already mushy) fruit bits, and lapping up the resulting juices
Bugscope Team the mosquito's mouth is like a needle, and its saliva has some analgesic properties as it sucks up blood undetected
- Teacher Can you show us something cool about the mosquito?
- Bugscope Team female mosquito antennae are kind of plain looking, whereas male antennae are fancy, kind of frilly
- Bugscope Team this is really cool
- Bugscope Team these are the biting mouthparts
- Teacher Or a different bug?
Bugscope Team this is one of the best views of the tip of the proboscis, and the tip of the fascicle, that we have ever had
- Bugscope Team and also the siphon tube for bloodsucking
- Bugscope Team you can see two of the cutting parts, with serrations on them, right in front
- Bugscope Team this is the tip of the fascicle, which is relatively long and sticks into your skin
- Teacher Sohum would like to know do only the females suck blood? And males suck nectar?
Bugscope Team only females suck blood. both sexes will feed on nectar.
Bugscope Team the blood meal is required in some species for proper egg development
- Bugscope Team are those tooth the bits that keep the probocis from sliding back out?
Bugscope Team I believe, although mosquitoes can be different, that there are four of those stylets; they are closely appressed into an efficient cutting, saliva-delivering, and bloodsucking instrument
- Teacher Do you have a butterfly?
Bugscope Team we have two moths
- Teacher Can we see the moth?
- Bugscope Team here is one of the moths
- Bugscope Team its proboscis is sticking out to the left
- Teacher What is that?
- Bugscope Team moth proboscises and those of butterflies are often coiled up when they are not being used
- Teacher Jaden think they might be like a big straw? Is that true?
Bugscope Team yup!
- Teacher How are the ommatidia of the moth different then the one on the mosquito and fly?
Bugscope Team first, there are many more. also, they can probably see wavelengths of light that mosquitoes and flies in general do not
Bugscope Team the ommatidium themselves are pretty similar. they are both superposition eye types (i think)
Bugscope Team this allows them to see better at low light (light from adjacent ommatidia bleeds in), but at the cost of the image not being as sharp
- Teacher Are there any spiders or bees you can show us?
Bugscope Team we have some wasps
Bugscope Team here is a small parasitic wasp
- Teacher What are we looking at right now? Can we see their stinger if they have one?
Bugscope Team we looked for stingers on both of the wasps today, and I am sorry -- they were not where we could see them
- Teacher Ok! That's alright! Can you show us some cool stuff on this wasp?
Bugscope Team the first thing you might notice is the mouth parts are very different from the moth and the flies
Bugscope Team although this is covered up by the antenna
- Bugscope Team here this is the other wasp I was trying to get to earlier
- Bugscope Team you can see the mandibles and two of the palps
- Bugscope Team Here's a clearer shot of the mouth parts
Bugscope Team the parts that looks like large doors are the mandibles
- Teacher What do wasps eat?
- Bugscope Team yellowjackets can eat just about anything. others are more specialized
- Teacher Do we have time for another bug? We are going to sit back and let you show and explain things for a bit
Bugscope Team yes we have time -- the 1 o'clock person will be about 15 minutes late getting on
- Bugscope Team this is an aphid\
- Bugscope Team these are the little roundish insects, very small, that feed on plants
- Bugscope Team aphids feed on plant juices
- Bugscope Team they have a thin proboscis (we can see the distal end of it, closest to the body) that sticks into leaves, for example
- Bugscope Team the piercing/sucking mouth parts are sort of in the middle there.
Bugscope Team (going from middle of the photo, straight down towards the bottom)
- Bugscope Team often they do not have wings, but when one generation is subject to stress from overpopulation, the next generation may be born with wings
- Bugscope Team now we can see the whole piercing/sucking mouthpart
- Bugscope Team the eyes have less facets than we've seen in the flies and the moth
Bugscope Team this is probably because they rely on their vision less, the aphids move about less, and are somewhat hidden from predators
- Bugscope Team aphids have two projections from the backs of their abdomens that look like dual exhausts on a car or truck
- Bugscope Team the projections are called siphuncles, or more commonly 'cornicles'
Bugscope Team the cornicles have defensive properties, and exude chemicals as a response
- Bugscope Team ladybugs, in both larval and adult form, like to eat aphids, which are softbodied, like little bonbons
- Teacher Thank you so so much! We really learned a lot and enjoyed this!
- Bugscope Team the cornicles protect the aphids from ants, some of which farm them like little cattle and some of which just prefer to eat them.
Bugscope Team the ants that farm them feed on their honeydew, which is the excrement (left over plant juices undigested by the aphid)
- Bugscope Team thank you for joining us today!
- Bugscope Team thanks!
- Bugscope Team Thank you!
- Bugscope Team This is a trapjaw ant, to see you out.
- Bugscope Team Bye!