Diet of otters in fish farms in Lithuania

Publication Type:Journal Article
Year of Publication:2009
Authors:Baltrunaite, L
Journal:Acta Zoologica Lituanica
Volume:19
Pagination:182-187
Date Published:2009
Keywords:Lutra lutra
Abstract:

The diet of the otter (Lutra lutra) was studied in three fish farms and a state hatchery in Lithuania in 2006-2007 by spraints analysis. The relative frequency of occurrence (O) and biomass consumed (B) were estimated. Fish made the bulk of the otter diet and was the only important food item (68.0-96.7% O, 87.5-99.8% B). Other items (mammals, birds, amphibians, crustacean, insects, and molluscs) generally comprised a minor part of the diet (3.3-32.0% O, 0.2-12.5% B) with significantly higher consumption in the warm season. The carp (Cyprinus carpio) predominated among fish (30.5-76.0% of annual biomass), and consumption of other species varied depending on the study site.

Taxonomic name: 
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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith