BIOL-4777EL Lecture Notes - Lecture 5: Rainbow Trout, Samuel Hearne, Lake Trout
15 Feb 2018
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Life 10-42oc: optimum temperature - most species, when they survive and reproduce best. Poikilotherms - cold blooded: use ambient temperature to control their body temperature. Some species can survive freezing: wood frog, samuel hearne. Thermoregulatory behaviour: movement towards optimal temperature, mammals. Invertebrates - blood sucking: core temp about 37oc, death - or fever, mosquitos - johnstons organ, base of antenna - monitor temp. Termites (ivory coast: tropical species (86of, 260 gallons of fresh air per day. Tuna can produce body heat: heat of the day - hide in burrows, night - come out and become active (cooler at night) Snakes, lizards: turtles sun themselves, garden snakes. Feed in the morning: pit vipers - facial pits, can see infra-red. Birds - core temp - 39 - 42oc: mammals - core temp - 36-38oc, more complex behaviour, hibernation, reduction in metabolic rate, reduction in oxygen intake, reduction in core temperature. True hibernators: squirrel family, non-true hibernators, black/grizzly bear.
