BIOL 1902 Lecture Notes - Lecture 10: Grooming Claw, Fish Gill, Parasitic Castration
8 Sep 2015
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Document Summary
Ticks: mouthparts for penetrating and holding, barbs on hypostome, anticoagulants, body shape, claws for grip to keep the blood flowing. Deer have a parasitic brainworm: the larvae leave the deer in its droppings, slug and snail eat and the parasite changes the behavior and cause them to climb on leaves that deer later eat, a slug or snail becomes the intermediate host when it eats the droppings, parasite moves up the spinal column and moves to sinuses, reproduce and come out as larvae from droppings, deer are the parasites definitive host, white tailed deer specialist, the moose dies from the brainworm, moose get the blind staggers", why does the brainworm only kill moose, evolved with white tailed deer and not the moose. Endoparasites have adaptations: small size, parasitic castration, problems too, intermediate host may not be found, wrong host night be entered, host can die, food supply.
