A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Does avian predation risk depress reproduction of voles?




TekijätKlemola T, Korpimaki E, Norrdahl K

KustantajaSPRINGER

Julkaisuvuosi1998

JournalOecologia

Tietokannassa oleva lehden nimiOECOLOGIA

Lehden akronyymiOECOLOGIA

Vuosikerta115

Numero1-2

Aloitussivu149

Lopetussivu153

Sivujen määrä5

ISSN0029-8549

DOIhttps://doi.org/10.1007/s004420050501


Tiivistelmä
Reproductive output and the growth of captive voles were quantified under high and low avian predation risk in a semi-natural experiment. Voles were exposed to Eurasian kestrels (Falco tinnunculus), the main avian predator of vole species studied (Clethrionomys glareolus, Microtus agrestis and M. rossiaemeridionalis). Vole pairs were housed in cages settled under nest-boxes occupied by breeding kestrels or in control cages settled under empty nest-boxes for 2 weeks. The experiment was conducted in mid-summer when kestrels had half-grown nestlings, because in that time hunting adults and begging nestlings produce noise and seats which may indicate significant predation threat to voles housed underneath the nest-boxes. The risk of kestrel predation did not have any obvious impact on pregnancy rates, mean litter sizes; or growth rates of kestrel-exposed voles compared with control voles studied. These results indicate that the risk of avian predation does not depress the reproductive investment of voles.



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