Reproductive patterns result from age-related sensitivity to resources and reproductive costs in a mammalian carnivore

Ecology
Geir Rune RausetJens Persson

Abstract

Although the effects of individual age, resource availability, and reproductive costs have been extensively studied to understand the causes of variation in reproductive output, there are almost no studies showing how these factors interact in explaining this variation. To examine this interaction, we used longitudinal demographic data from an 18-year study of 53 breeding female wolverines (Gulo gulo), and corresponding environmental data from their individual home ranges. Females showed a typical age-related pattern in reproductive output, with an initial increase followed by a senescent decline in later years. This pattern was largely driven by four processes: (1) physiological/behavioral maturation between ages two and three; (2) age-related differences in the costs of reproduction resulting in an initial increase, and then a declining probability of breeding two years in a row as individuals aged; (3) resource availability (reindeer [Rangifer tarandus] carcass abundance; mostly Eurasian lynx [Lynx lynx] kills) in the months preceding parturition, which influenced the probability of having cubs, but only for individuals that had successfully bred in the previous year; and (4) resource availability also influenced the cost of...Continue Reading

References

May 17, 2006·Trends in Ecology & Evolution·Nathalie PettorelliNils Chr Stenseth
Oct 13, 2006·The Journal of Animal Ecology·Luca BörgerTim Coulson
Sep 13, 2007·Biology Letters·G ProaktorT Coulson
Feb 12, 2008·Journal of Wildlife Diseases·Asa FahlmanGörel Nyman
Jul 29, 2008·The Journal of Animal Ecology·Jiska van DijkArild Landa
Apr 25, 2009·Oecologia·Andreas ZedrosserJon E Swenson
Nov 10, 2009·Trends in Ecology & Evolution·Alastair J Wilson, Daniel H Nussey
Aug 24, 2010·The Journal of Animal Ecology·Xavier A HarrisonStuart Bearhop
Sep 15, 2010·Ecology·Marie NevouxHenri Weimerskirchi
Dec 25, 2010·The Journal of Animal Ecology·Kelly MoyesTim Coulson
Apr 1, 1992·Trends in Ecology & Evolution·D Reznick
Sep 1, 1995·Trends in Ecology & Evolution·P Forslund, T Pärt
Aug 23, 2012·Ecological Applications : a Publication of the Ecological Society of America·Sandra HamelE Gene Towne
Oct 19, 2012·Journal of Mathematical Biology·Allison K Shaw, Simon A Levin
Aug 7, 2013·Ecology and Evolution·Thierry ChambertRobert A Garrott
Sep 5, 2013·Conservation Biology : the Journal of the Society for Conservation Biology·Martha M EllisMichael K Schwartz
May 30, 2014·Biology Letters·Marine DesprezClive R McMahon

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Citations

Feb 20, 2018·Ecological Applications : a Publication of the Ecological Society of America·Megan K KostermanMark Hebblewhite
Jul 1, 2020·Oecologia·Clément ChevallierDominique Berteaux
Mar 17, 2016·Scientific Reports·José Vicente López-BaoHenrik Andrén

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