, Volume 92, Issue 2, pp 162–165

Predator induced life-history shifts in a freshwater cladoceran

  • Herwig Stibor
Original Papers

DOI: 10.1007/BF00317358

Cite this article as:
Stibor, H. Oecologia (1992) 92: 162. doi:10.1007/BF00317358


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.

Key words

DaphniaPredator inductionLife-history strategyResource allocationPhenotypic plasticity

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Herwig Stibor
    • 1
  1. 1.Max-Planck-Institut für LimnologieAbteilung ÖkophysiologiePlönFederal Republic of Germany