Diet patterns of Eurasian lynx Lynx lynx: what causes sexually determined prey size segregation?

• Autorzy: Sunde P. , Kvam T.
• Języki publikacji: EN

Abstrakty

EN

The influence of sex, body weight, physical condition, age and season on diet choice was investigated by hunting reports and intestinal analyses of 441 lynx Lynx lynx (Linnaeus, 1758) from Norway killed during 1960-1996. Of self-provisioning (> 1 yr) lynx (n = 280), males preyed proportionately more upon cervids (primarily roe deer Capreolus capreolus and semi-domestic reindeer Rarigifer tarandus) compared to small game (mountain hare Lepus timidus and tetraonids) than females did. Only 5.4% of the variation in prey preference towards small game and cervids (p = 0.0002) could be explained by sex. In a logistic regression model, no additive effect of weight or any other parameters was found after sex had been included. We did not find sufficient evidence for body weight (sensil stricto) being related to prey choice, but propose that sexually determined prey segregation in lynx is caused by different ranging behaviour resulting in different encounter rates with different kinds of prey.

Słowa kluczowe

EN

diet; Lynx lynx; sex; body weight; Capreolus capreolus; roe deer; physical condition; Eurasian lynx; age; lynx

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1997
• Tom: 42
• Numer: 2
• Opis fizyczny: p.189-201,fig.

Twórcy

autor

Sunde P.

• University of Copenhagen, Universitetsparken 15, DK - 2100Copenhagen, Denmark

autor

Kvam T.

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