Diet composition and food selectivity of 0-group herring (Clupea harengusL.) and sprat (Sprattus sprattus(L.)) in the northern Baltic Sea
Author(s) -
F Arrhenius
Publication year - 1996
Publication title -
ices journal of marine science
Language(s) - English
Resource type - Journals
eISSN - 1095-9289
pISSN - 1054-3139
DOI - 10.1006/jmsc.1996.0089
Subject(s) - sprat , clupea , acartia , herring , copepod , biology , bosmina , zooplankton , acartia tonsa , predation , fishery , pelagic zone , forage fish , zoology , ecology , crustacean , fish <actinopterygii> , cladocera
Diet composition and prey selectivity of the major Baltic Sea zooplanktivores, 0-group herring (Clupea harengus) and sprat (Sprattus sprattus), were studied in a coastal area. Diets were dominated by zooplankton, mainly cladocerans (Bosmina longispina maritima and Pleopsis polyphemoides) and copepods (Acartia spp. and Eurytemora aYnis hirundoides/Temora longicornis). There were diVerences in order of the prey selected by the two diVerent 0-group predators (fish hatched during the sampling year) when analysing each species separately. The general order of prey preference for herring was Acartia>Eurytemora>cladocerans>Pseudocalanus minutus>copepod nauplii and for sprat Eurytemora>cladocerans>Acartia>Pseudocalanus>copepod nauplii. As they grew 0-group clupeoids selected larger prey; the greatest preference was shown for intermediate sized prey (0.7-1.0 mm in cephalothorax length). ? 1996 International Council for the Exploration of the Sea
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