Dispersal and Migration

5 important questions on Dispersal and Migration

What is natal dispersal?

the movement away from an individuals place of birth to its first breeding location

What is the competition hypothesis?

dispersal functions reduce competition for resources

What is the difference between density dependent dispersal and food related natal dispersal and breeding dispersal?

density: high density causes high dispersal because high density corresponds to intense competition

Food: when food density is high, individuals disperse shorter distances

breeding: movement to a new breeding site, in search of higher quality habitat that will enhance fitness
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What is inbreeding avoidance and what is the relation with natal dispersal?

individuals that mate with close relatives tend to have lower reproductive succes, dispersing away solves this

What is the opposite of breeding dispersal?

side fidelity, rebreeding at the same site

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