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23 Cards in this Set
- Front
- Back
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Arms Race
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Relationship between organisms that exhibit coevolution and escalation.
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Nest parasites
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Birds who lay eggs in other birds' nests in the hopes that the host bird will rear their offspring.
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Asymmetrical selection
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= life-dinner principle. Expect prey to be a couple of steps ahead of the predator (or host->parasite).
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Intraspecific competition
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Competition between members of the same species. Stronger than interspecific.
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Interspecific competition
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Competition between members of different species.
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Exploitation competition
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Draw resources faster than the competitor can.
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Interference competition
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Fight or hide a resource from a competitor.
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IFD
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Ideal Free Distribution. If organisms are ideal (know the quality of all potential habitats), free to choose between them (no despots), they will distribute themselves in such a way that each member has the same amount of resources.
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Patch
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A spatial subset of habitat that is treated as a single homogeneous unit.
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Habitat
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A spatially bounded area, with a subset of physical and biotic conditions, within which the density of interacting individuals, and at least one of the parameters of population growth is different than in adjacent habitats.
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Habitat selection
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Process by which individuals preferentially use a non-random subset of available habitats.
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Home Range
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Area where animal spends bulk of its time. No overlap if the animals are territorial.
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Dilution Effect
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With more people in a group, less change of being the one who is eaten.
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Polyandry
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Female mates with more than 2 males.
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IDD
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Ideal Despotic Distribution. Usually a despot present that prevents organisms' freedom (IFD), but the organisms are still ideal. Good competitors tend to inhabit good habitats.
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Anisogamy
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Gametes have evolved to be different sizes.
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Intersexual selection
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Doing something enticing to attract the opposite sex.
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Intrasexual selection
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Compete with those of the same sex for mate.
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Sexual selection
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Arises from the advantages that certain individuals have other others of the same sex and species in exclusive to reproduction.
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Runaway selection
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Sexual selection operates on a preferred trait. Stops when predation risk increases; sexual selection and natural selection oppose one another.
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Classic female choice
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Pre-insemination: e.g. courtship (helps keep from mating with wrong species, determine fitness of potential mate)
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Cryptic female choice
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Post-insemination. Predominant over classic female choice. Include physiological, morphological, behavioral, and genetic interventions.
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War of Attrition
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Display aggression (puffed chest stance). Could lose access to food or females, but not actual physical aggression.
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