JENKS MIDDLE SCHOOL
Session 2011-009

Application

School

Class

Project

Miscellaneous

Transcript

Connected on 2011-04-04 10:00:00 from Tulsa, Oklahoma, United States

• 9:28 am
• GuestHello!
• Bugscope Teamhi there

• 9:34 am

• 9:40 am

• 9:57 am

• Bugscope Teamhello Horizons 3
• Bugscope Teamoops H2 I mean
• GuestHello
• Bugscope Teamwhere are you connecting from?
• GuestNorth Carolina
• 10:02 am
• Bugscope Teamcool!

• Bugscope Teamthe school we are working with today, in Tulsa, is studying the internal organs of the cabbage white butterfly
• Bugscope Teamand we have done the best we can to show the anatomy, but it is difficult to see what is what
• Bugscope TeamHello MM!
• Guestit is very interesting, some things are hard to see but, it is still very neat to be able to get that close
• Bugscope Teamthis is a longitudinal section of a cabbage white caterpillar, and it is the fore-section of the body
• Guestwe are really enjoying the different views of the caterpillar
• 10:08 am
• Bugscope Teamwhen our school gets on they will be able to drive to the places -- the presets -- that you see in thumbnail form on the lefthand screen
• Bugscope Teamgood morning Mrs Giddens
• Bugscope Teamwelcome to Bugscope!
• GuestI hope we can stay that long, this is our first visit and I hope we can come back as a guest later to see some other insects.
• TeacherHELLO
• Bugscope Teamthis is the fore-portion of a cabbage white caterpillar
• Bugscope Teamwe ordered some cabbage whites but they came as caterpillars and of course we did not have time to let them grow and become butterflies
• TeacherWell, it's nice to see the inside of the cabbage white catapillar.
• Bugscope Teamwe also took three moths and cut them open, longitudinally, as well as a wasp. but this is something we have a lot to learn about preparing.
• 10:13 am
• Bugscope TeamMrs G please feel free to drive around
• TeacherOh, and I prefer to use the word "larva"
• TeacherAnd thank you.
• Bugscope Teamthere are two of these sectioned cabbage white larvae, there is one whole one, and there is a tobacco hornworm larva as well; the latter were too wet to
• Bugscope Teamcut open yesterday
• TeacherThat's OK

• Bugscope Teamyou can start to see some of the tracheae
• TeacherYes... This is very interesting!
• Bugscope Teamwith an open circulatory system and the heart in back with the dorsal artery toward the front, and to the top here, it is fairly confusing
• Bugscope Teamthe tubules you see are the tracheae
• 10:19 am

• Bugscope Teamthe tracheae are ductwork with internal ribs
• TeacherCool... My class is studying the body systems.
• Bugscope Teamperhaps they can help us identify some of these components
• GuestThis is very interesting I appreciate you letting us sit in as a guest. I hope we can come back soon Thank you!
  Bugscope TeamThank You!
• Bugscope Teamit is important to consider that these have been sectioned using a fresh, sharp razorblade, so for example to the left we are looking at what resembles, in other insects, cross-sectioned muscle
• 10:24 am
• TeacherPerhaps they could...
• Bugscope Teamthe larva do not have compound eyes. they have only stemmata, which are fairly simple. so we do not see the connections we normally see between the eyes and the brainrain
• TeacherWhat are those two tube-like holes?
• Bugscope Teamthe tracheae
• Bugscope Teamor some of the tracheae
• Bugscope Teambreathing tubes that run through the body and are connected to the spiracles found on the outside
• Bugscope Teamthey deliver air/oxygen to the body cavity via the spiracles, d'oh as Cate said
• Bugscope Teamwhat we are looking at is one of the reasons insects cannot, thankfully, grow exceeding large and prey on people
• TeacherThat's so cool!
• Bugscope Teamalthough they are complex, in many ways their bodies are simpler than ours
• Bugscope Teamin prehistoric times when the oxygen content was richer, the trachea could be a bigger size, allowing the body to be a bigger size, which is why prehistoric insects were big
• Teacheryes...
• 10:29 am
• Bugscope Teamthey do not have a closed circulatory system like we do
• Bugscope Teamexcept for cockroaches, which have stayed the same for whatever reason
• Bugscope Teamthe internal cavity is filled with hemolymph, which is usually clear
• Bugscope Teamif you squish an insect and the fluid looks yellow, for example, it is because the hemolymph has mixed with the contents of the gut
• Bugscope Teambutterflies can control where the hemolymph goes, to some extent. for example, when they want to extend their proboscis they force hemolymph into it to make it pop out like a party favor
• TeacherIt almost always does...
• TeacherFor me

• Bugscope Teamand they also have the ability to push hemolymph into their wings when they emerge, for example, from a chrysalis
• 10:34 am
• Bugscope Teambe sure and take the mag down a bit so that you can drive toward the rear, which is to the left
• Bugscope Teamoops I mean to the right
• Teacher*That
• Bugscope Teamyou can click in the direction you want to drive to
• Teacherhow do they do thatal?
  Bugscope TeamI think that they do both of those things through muscular contractions, sort of squeezing their own bodies to force the hemolymph into the periphery
• TeacherDo you have any more views?

• Bugscope Teamthe presets are on the left, if you would like to click the arrow to view them
• TeacherNeat...
• 10:40 am
• Bugscope Teamwe have an opportunity here to see the setae, which are the external sensory system of the larva -- of the insect -- and are attached to nerves within
• TeacherWhat is that one bit that lookes scooped out?
  Bugscope Teamwe think that is part of the gut
• Bugscope Teambe sure and drive around a bit so you can get a good sense of perspective -- of what goes where
• TeacherVery neat... and interesting!
• Bugscope Teamyou know this can be confusing to us as well
• Bugscope Teamyou can, for example, click in the upper left to get the whole stage to move to the lower right

• Bugscope Teamthis is like the movie Brazil, with all of the ductwork

• Bugscope Teamthat is a cross-section of one of the tracheae
• Teachermagnified 2462 times?
  Bugscope Teamyes it is about 15 bacteria, end to end, in diameter
• 10:46 am
• Bugscope Teamthe wasp's head is upside down, and we are looking at one of the tracheae that brings oxygen to its head
• Bugscope Teamthere are usually two spiracles on either side of each segment of the body
• Bugscope Teamthe spiracles may be opened and closed by the insect -- so for example it can close its spiracles to hold its breath
• Bugscope Teamthe spiracles usually have what looks like a filtering mechanism to keep pollen and mold spores out
• Bugscope Teamto keep things out of these tiny ducts

• Bugscope Teamnow we see an external view of one of the cabbage white larvae

• Bugscope Teamthe dots on it s head are stemmata -- perhaps 5 on each side
• Bugscope Teamand you can Yes! see its mandibles
• TeacherIs that the mouth?
  Bugscope Teamyes it has big fat mandibles made for eating leaves
• Bugscope Teamthey open out like a gate

• Bugscope Teamoften, much of the inside of the head is muscle that powers the jaws
• 10:51 am
• Bugscope Teamthat may have been what we were seeing in the longitudinal section earlier -- the muscle
• Bugscope Teamwhen we look at leafcutter ants we see that the whole shape of their heads is built around the powerful muscles it uses to operate its jaws

• Bugscope Teamleafcutters do not eat the leaves, however. the cabbage white moth eats whatever gets into its jaws
• TeacherYou did a fine job of getting an image of a cross-section of the CWB thorax. Thank you.
• Bugscope TeamMrs G I am sorry we did not do as well as we had hoped.
• TeacherWe are pleased. Thank you.
• Bugscope Teamgreat I hope you liked seeing things close up that you don;t normally see
• Bugscope Teambecause we did not have an adult, we cut a wasp in half longitudinally, as well as a few moths; those are the other presets today, plus some other things
• 10:57 am
• TeacherI appreciate your time!
• Bugscope Teamthank you, Mrs G
• TeacherI am looking forward to completing the feedback form.
• TeacherHave a great day. Bye Bye from JENKS MIDDLE SCHOOL, Jenks, OK
• Bugscope TeamBye!