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Variable life history of a cyclopoid copepod: the role of food availability

  • Diapause and Crustacean Life Histories
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Abstract

Populations of the copepod Cyclops vicinus in two Danish lakes differed in their life cycles. In Lake Væng C. vicinus was absent during summer, whereas in Lake Søbygård it continued producing distinct cohorts throughout summer. A comparison between the lakes showed that in the lake where C. vicinus was absent during summer, food limitation generally existed. In contrast, abundance of C. vicinus during summer in Lake Søbygård always coincided with available resources sufficient for the whole life cycle. Thus, summer diapause of C. vicinus is suggested to be a strategy to avoid food limitation. Avoidance of fish predation does not seem substantially to influence life cycles.

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Author notes

  1. Anne-Mette Hansen

    Present address: Institute of Biology, Odense University, DK-5230, Odense M, Denmark

Authors and Affiliations

  1. Department of Freshwater Ecology, National Environmental Research Institute, Denmark

    Anne-Mette Hansen

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  1. Anne-Mette Hansen
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Hansen, AM. Variable life history of a cyclopoid copepod: the role of food availability. Hydrobiologia 320, 223–227 (1996). https://doi.org/10.1007/BF00016823

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