Otter Lutra lutra predation in cyprinid-dominated habitats

Authors
Citation
J. Kloskowski, Otter Lutra lutra predation in cyprinid-dominated habitats, Z SAUGETIER, 64(4), 1999, pp. 201-209
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences
Journal title
ZEITSCHRIFT FUR SAUGETIERKUNDE-INTERNATIONAL JOURNAL OF MAMMALIAN BIOLOGY
ISSN journal
0044-3468 → ACNP
Volume
64
Issue
4
Year of publication
1999
Pages
201 - 209
Database
ISI
SICI code
0044-3468(199908)64:4<201:OLLPIC>2.0.ZU;2-Q
Abstract
Diet composition of otter Lutra lutra was quantified by analysis of 2 048 s praints collected at half-month intervals concurrently with a one year cult ure cycle of carp Cyprinus carpio in a fish pond area (S.E. Poland) and com pared with data on farm stocks. Presence of cultured fish affected the diet composition, carp being the single most important food. The estimated biom ass proportion of carp in spraints varied monthly between 15.7 % in June an d 78.0 % in March. Carp abundance changes could not explain the seasonal va riation in predation pressure. The factors responsible for the seasonal shi fts in the use of resources are discussed.