A researcher studying fish populations in Lake Malawi found that when population density increased, the average body mass of individual fish decreased and fewer eggs were produced per female. Which term describes this type of population regulation?

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Question

A researcher studying fish populations in Lake Malawi found that when population density increased, the average body mass of individual fish decreased and fewer eggs were produced per female. Which term describes this type of population regulation?

Accepted Answer

intraspecific competition — Award 1 mark for intraspecific competition. This is competition between members of the same species for limited resources (food, space), which intensifies at higher densities and reduces individual growth and reproduction. B is incorrect because interspecific competition occurs between different species. C is incorrect because the effect depends on population density. D is incorrect because exponential growth does not involve resource limitation.

Answer

density-independent regulation

Answer

exponential growth

Answer

intraspecific competition

Answer

interspecific competition

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