Life cycles of the two freshwater copepods Cyclops strenuus Fischer and Cyclops insignis Claus (Cyclopoida,Copepoda) in an amphibious floodplain habitat |
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| Authors: | Frisch Dagmar |
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| Institution: | (1) Institut für Zoologie, Freie Universität Berlin, Königin-Luise-Str. 1-3, D-14 195 Berlin, Germany;(2) Present address: Department of Biology, University of Mississippi, 229 Shoemaker Hall, Oxford, MS, 38677, U.S.A. |
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| Abstract: | Life cycles of the freshwater cyclopoids Cyclops strenuus Fischer and Cyclops insignis Claus are described from populations of one permanent and two temporary waters in a floodplain area. The abundance of these two species was studied in detail, with special regard to instars surviving summer drought. Both species coexist in two locations during the flood period in the cold season. Cyclops insignis is strictly univoltine, whereas Cyclops strenuus may produce two generations. Differences in timing of egg production, mortality of juvenile instars at four different temperatures, and survival of resting stages in terrestrial conditions are discussed as possible characteristics facilitating the coexistence of the two species. |
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| Keywords: | reproduction period diapause temperature-dependent mortality resting stages survival in terrestrial conditions temporary pools |
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