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BIOL 4150 (48)
Lecture 17

Lecture 17

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Department
Biology
Course
BIOL 4150
Professor
Andrew Mac Dougall
Semester
Fall

Description
Population Ecology Lecture NotesLecture 17Prey affecting predatorsTwo conditions required1Alternative prey species generally unavailable eg lynx on hare2Predator is highly specialized on the prey most common for insects rare for vertebratesReason for specializationaPrey meets minimum energy needs body size of prey population size of preybPrey contains chemical compounds necessary for metabolic processes or protection Ex The Monarch Butterfly The range of milkweed determines the breeding range of the butterfly as it is the only plant that larvae can eatAdult female monarchs lay their eggs on the underside of milkweed leaves These eggs hatch in three to twelve daysLeaves contain toxins that are unpalatable to butterfly predatorsAdult range much wider summer food plants winter pine stands at high eleva
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