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Life history strategies in a fluctuating environment: establishment and reproductive success in the arctic fox
Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen.
Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen. (Svenska Fjällrävsprojektet)
1996 (engelsk)Inngår i: Ecography, ISSN 0906-7590, E-ISSN 1600-0587, Vol. 19, nr 3, s. 209-220Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Natal dispersal, territoriality and reproductive success can have a major impact on the range, genetics and risk of extinction of a population. The proportions of animals that disperse have often been investigated, but not their fate. We have studied the lifetime reproductive success of arctic foxes that successfully emigrated, travelled and settled. Of these, some settled in the vicinity of their natal site as residents and some immigrated from other ai eas, i.e. short- and long-range dispersers respectively. We round no seu bias in migration patterns. In presaturation years, more immigrants residents settled. Immigrant females had higher reproductive success than resident females. There was strong support for the ultimate hypothesis of Competition For Resources (CFR), but not for tile hypotheses of Competition For Mates (CFM), Resident Fitness (RFH) and Inbreeding Avoidance (IA). Our data on arctic foxes could not be fully explained by and of four proximate hypotheses. We suggest that the reason is that dispersal and establishment should be considered as state dependent life history characteristics of individuals rather than population averages.

sted, utgiver, år, opplag, sider
1996. Vol. 19, nr 3, s. 209-220
Emneord [en]
FOXES VULPES-VULPES, JUVENILE DISPERSAL, ALOPEX-LAGOPUS, RED FOXES, POPULATION, MAMMALS, PHILOPATRY, HYPOTHESIS, MOVEMENTS, BEHAVIOR
HSV kategori
Forskningsprogram
zoologi
Identifikatorer
URN: urn:nbn:se:su:diva-29714DOI: 10.1111/j.1600-0587.1996.tb01247.xISI: A1996VD16600001ISBN: 0906-7590 (tryckt)OAI: oai:DiVA.org:su-29714DiVA, id: diva2:234770
Merknad

NB: title misspelled in ISI: "Life history strategies in a fluctuating environment: Establishment and reproductive success in the arctic fos"

Tilgjengelig fra: 2009-09-10 Laget: 2009-09-10 Sist oppdatert: 2017-12-13

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