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No diapause prolongation response of Daphnia in the presence of planktivorous mosquitofish ( Gambusia holbrooki )
Author(s) -
Angeler David G.
Publication year - 2005
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1007/s11284-005-0075-4
Subject(s) - gambusia , biology , daphnia , mosquitofish , predation , ecology , predator , diapause , hatching , branchiopoda , zooplankton , zoology , cladocera , fishery , larva , fish <actinopterygii>
Recent research suggests that planktonic organisms in resting stages can perceive predators chemically and delay hatching to evade predation. Using a co‐occurring predator–prey pair ( Gambusia holbrooki Girard and Daphnia curvirostris Eylmann) from a Mediterranean floodplain wetland, this study tested for such predator‐avoidance behaviour of Daphnia . Results show that hatching patterns of Daphnia were not reduced by the presence of different biomass levels of Gambusia . This could be due to the fact that the density of Gambusia in the wetland is high from late spring to late autumn, suggesting that delayed hatchlings would face increased mortality through consumptive predation.