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BIOL 150 (80)
Lecture

Biol150 - Migration.pdf

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Department
Biology
Course
BIOL 150
Professor
Rebecca Rooney
Semester
Fall

Description
Chapter 8 84 86Migration Where should I doDirectional intentional movement of a population associated with cyclic change in environmentUsually bw 2 locationsTypesCommunicationDiel DailySocial process in which signal from one individual modifies behaviour To avoid predationof another individualSeasonalSignal types acoustic visual olfactory tactileRainy vs dry Signal type correlates with habitatWinter vs summerCommunication system are controlled by natural selection to maximize benefits and minimize risks Ex Bright displays attract Dispersal one way trippredatorsMovement of individuals after birthScarce resources cause dispersal for foodLyingOver populationSome animals can use misleading communication signals attract preyHowever this only works if it is rare and very few animals can actually How do they migratedetect the liarsPilotingEx Brown headed cowbirds Using landmarksPut their eggs in another species nest and makes them raise Compass orientationthe birds Bigger and hatch firstUsing stars sun magnetic field cu
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