The freshwater microcrustacea of Easter Island |
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Authors: | Henri J Dumont Koen Martens |
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Institution: | (1) Laboratory of Animal Ecology, University of Ghent, Ledeganckstraat 35, B-9000 Gent, Belgium;(2) Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium |
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Abstract: | The Cladocera , Copepod and Ostracod fauna of Easter Island amounts to only five species. Three of these are wide-ranging, and four are cyclic parthenogens or at least capable of parthenogenesis. Two, the Cladoceran Alona weinecki and the Ostracod Sarscypridopsis sp., are more interesting from a biogeographic point of view, because restricted (apart from Easter Island) to the subantarctic. It is argued that this is strong evidence of their introduction by man, not by natural passive dispersal. |
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Keywords: | Cladocera gif" alt="lsquo" align="BASELINE" BORDER="0">Cladocera " target="_blank">gif" alt="rsquo" align="BASELINE" BORDER="0"> Copepods Ostracods passive dispersal subantarctic zone |
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