ani phys lecture 11-29

ani phys lecture 11-29 - Animal Physiology Lecture Notes...

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Animal Physiology Lecture Notes 11-29-07 Comparative endocrinology Insects are a great example because a lot of discover of how enzymes work was found in insects 1) Ecdysone or Ecdysterone: a steroid hormone produced by a gland from the brain… stimulates growth and molting…one of the first enzymes/hormones described…Wigglesworth did a parabiosis experiment in which he took the body part of one insect and glued it to the body part of another insect (during pupa stage)…depending on when the gluing took place, he found out that certain parts of the body had something inside of it that helped trigger molting this hormone was later discovered as ecdysone… 2) Juvenile Hormone (JH) : only found in arthropods…a lipid. ..promotes retention of larva stage…if you inject this into an insect, the larva does not molt into a pupa, they may molt but not into a different stage… Pg. 39---figure with instar stages… Study on Manduca sexta , horn worms that eat the leaves of tobacco and tomato plants…
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ani phys lecture 11-29 - Animal Physiology Lecture Notes...

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