Linking the Structure of Benthic Invertebrate Communities and the Diet of Native and Invasive Fish Species in a Brackish Water Ecosystem

To date the studies that link community structure of benthic invertebrates with fish feeding are rare as well as factors that are behind this feeding selectivity are poorly known. In this study, we related invertebrate species composition, their dominance structure and fish biological characteristic...

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Bibliographic Details
Published in:Annales zoologici fennici 2011-06, Vol.48 (3), p.129-141
Main Authors: Järv, Leili, Kotta, Jonne, &, Ilmar Kotta, Raid, Tiit
Format: Article
Language:English
Subjects:
Animal communities
Benthic invertebrates
Biomass
Brackish
Diet
Fish
Fish feeding
Food
Invasive species
Invertebrata
Invertebrates
Marine
Marine fishes
Pleuronectiformes
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Summary:To date the studies that link community structure of benthic invertebrates with fish feeding are rare as well as factors that are behind this feeding selectivity are poorly known. In this study, we related invertebrate species composition, their dominance structure and fish biological characteristics to the feeding selectivity and overlap of the native flounder, perch and the invasive round goby in Muuga Bay, the Baltic Sea. Species composition and proportion of benthic invertebrates in the diet of fishes differed from what was available in the field. Except for the round goby, the studied fishes preferred small and mobile invertebrates over large bivalves. However, diet of the studied species, namely the round goby and flounder overlapped. Besides, perch preyed on young stages of the round goby indicating that the introduction of round goby may negatively affect flounder but positively perch.
ISSN:0003-455X
1797-2450
DOI:10.5735/086.048.0301