Assessment of predatory ability of native and non-native freshwater gammaridean species： A rapid test with water fleas as prey  

作　　者：B.E.M.W. STOFFELS J.S. TUMMERS G. VAN DER VELDE D. PLATVOET H.W.M. HENDRIKS R.S.E.W. LEUVEN 

机构地区：[1]Radboud University Nijmegen, Institute for Water and Wetland Research, Department of Animal Ecology and Ecophysiology, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands [2]Netherlands Centre for Biodiversity Naturalis, P.O. Box 9517, NL-2300 RA Leiden, The Netherlands [3]Netherlands Centre for Biodiversity Naturalis, Mauritskade 57, NL-1092 AD Amsterdam, The Netherlands [4]Radboud University Nijmegen, Faculty of Science, Department of Mathematics, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands [5]Radboud University Nijmegen, Institute for Water and Wetland Research, Department of Environmental Science, Heyendaal seweg 135, NL-6525 AJ Nijrnegen, The Netherlands

出　　处：《Current Zoology》2011年第6期836-843,共8页动物学报（英文版）

摘　　要：Predation rate with relation to species, sex and water temperature was tested among four different gammaridean spe- cies： Dikerogammarus villosus, Gammarus roeselii, Gammarus pulex and Gammarus fossarum. Tests were performed in micro- cosms in climate-controlled rooms at five different temperatures. Daphnia magna, a common water flea, served as prey. On ave- rage D. villosus showed the highest consumption rate of Daphnia magna over the entire temperature range, followed in decreas- ing order by G pulex, G roeselii and G fossarum. The predation rate of all species showed a distinct peak at 20~C. Correction of predation rates for body size gave somewhat different results. D. villosus is then still the most predatory of all gammaridean spe- cies tested followed by G. pulex, G. fossarum and G roeselii. The outcome of the Daphnia tests is consistent with results of other studies with different prey. This supports that the Daphnia test is a good and quick indicator of the predatory abilities in gam- maridean species at varying temperatures, and allows the prediction of how changing temperature regimes influence invasion impacts

关 键 词：DAPHNIA Temperature Predation rate AMPHIPODS Invasions 

分 类 号：Q959.838[生物学—动物学] Q16