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Biology - Exam 5

TermDefinition
Ethology the study of animal behavior
Releaser a specific type of sign stimulus that communicates information between members of the same species
Imprinting the rapid, earl-life learning process in which animals, often within a short "critical period", form intense, irreversible attachments to a caregiver.
Polygamy a mating system where individuals have multiple mating partners rather than just one
Sexual dimorphism the degree of difference in appearance between males and females
Altruism actions that reduce an individuals own fitness while increasing the fitness of another or a group
Batesian mimicry when one species poses as another type of animal to reap that benefit
Fecundity refers to the number of offspring that an individual produces over its lifetime
Iteroparity repeated reproduction over the course of an organism's life
Allee effect where population growth improves, at least initially, with increases in population density
Proximate causation explains how behavioral actions occur
Ultimate causation explains why animal behaviors occur
Fixed action pattern inborn stereotyped behaviors
Modal action pattern when there is some variation in the performance of an animal behavior
Sign stimuli factors that trigger innate responses
Prepared learning behaviors that are learned easily and by almost all (if not all) members of a population
Habituation the simplest learned behavior where animals learn to ignore irrelevant stimuli
Promiscuous animals that don't form any real pair bonds
Polygyny a type of polygamy where one male mates with several females
Polyandry a type of polygamy where a single female mates with several males
Extra-pair copulation where some offspring are the result of mating with individuals that are not part of pair-bond
Coefficient of relatedness a measure of how closely related a sacrificer is to a beneficiary
Population density refers to the number of species members within a given unit area of the habitat
Population dispersion refers to the distribution pattern of the species members within the habitat area
Created by: MaddieIcekamp
 

 



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