| Feeding ecology of pelagic fish species in the Gulf of Riga (Baltic Sea): the importance of changes in the zooplankton community. | |
| | |
MedLine Citation:
|
PMID: 21155782 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
The feeding ecology of four pelagic fish species was studied in relation to their prey availability in the Gulf of Riga (Baltic Sea) during the summer 1999-2006. The zooplankton community was dominated by the cladoceran Bosmina longispina, rotifers Keratella cochlearis and K. quadrata and the copepod Eurytemora affinis, with the highest interannual variability in abundance recorded for B. longispina. The last influenced the diet of adult sprat Sprattus sprattus, juvenile smelt Osmerus eperlanus and three-spined stickleback Gasterosteus aculeatus as these were strongly selecting for B. longispina. The fish feeding activity did not match the abundance dynamics of their preferred prey, suggesting that fishes may switch to consume other prey in case the preferred diet was limited. A considerable dietary overlap indicated high potential competition between pelagic fish species. While herring Clupea harengus membras and G. aculeatus were relying on very different food, the diets of young O. eperlanus and G. aculeatus were very similar. Interannual variability in zooplankton composition and abundance significantly affected the diet composition of fishes, but those changes were insufficient to exert a consistent influence upon fish feeding activity and total amounts of zooplankton consumed. |
| | |
Authors:
|
A Lankov; H Ojaveer; M Simm; M Põllupüü; C Möllmann |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-11-15 |
Journal Detail:
|
Title: Journal of fish biology Volume: 77 ISSN: 1095-8649 ISO Abbreviation: J. Fish Biol. Publication Date: 2010 Dec |
Date Detail:
|
Created Date: 2010-12-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0214055 Medline TA: J Fish Biol Country: England |
Other Details:
|
Languages: eng Pagination: 2268-84 Citation Subset: IM |
Copyright Information:
|
© 2010 The Authors. Journal of Fish Biology © 2010 The Fisheries Society of the British Isles. |
Affiliation:
|
Estonian Marine Institute, University of Tartu, Lootsi 2a, 80012 Pärnu, Estonia. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Spatial analysis of egg distribution and geographic changes in the spawning habitat of the Brazilian...
Next Document: Effects of compressed seasonally changing day-length cycles on spawning performance, production of v...