ISSN:
1432-1939
Keywords:
Daphnia
;
Predator induction
;
Life-history strategy
;
Resource allocation
;
Phenotypic plasticity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Life-history theory predicts that maturity and resource allocation patterns are highly sensitive to selective predation. Under reduced adult survival, selection will favour genotypes capable of reproducing earlier, at a smaller size and with a higher reproductive effort. When exposed to water that previously held fish, (size selective predators which prefer larger Daphnia), individuals of Daphnia hyalina reproduced earlier, at a smaller size and had a higher reproductive investment. Hence the prey was able to switch its life history pattern in order to become less susceptible to predation by a specific predator. The cue that evokes the prey response is a chemical released by the predator.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00317358
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