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Changes in Nearshore Zooplankton Associated with Species Invasions and Potential Effects on Larval Lake Whitefish (Coregonus clupeaformis)
Author(s) -
Fernandez Randolph J.,
Rennie Michael D.,
Sprules W. Gary
Publication year - 2009
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/iroh.200811126
Subject(s) - zooplankton , coregonus clupeaformis , copepod , abundance (ecology) , bay , biology , larva , ecology , fishery , coregonus , environmental science , oceanography , crustacean , fish <actinopterygii> , geology
We examined changes in the nearshore zooplankton community of South Bay, Lake Huron before (1982) and after (2002–2005) the invasions of dreissenid mussels and Bythotrephes longimanus and found substantial changes including lower cladoceran abundance, particularly Bosminidae, and higher copepod abundance after invasion. We also estimated changes in the energy content of zooplankton potentially available to larval lake whitefish before and after invasion using published values of energy content per unit mass. There were no differences in available zooplankton energy in May, the period when larvae feed inshore based on thermal preferences and surface temperature data. We conclude that changes in nearshore zooplankton communities following these species invasions probably do not affect larval lake whitefish. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)