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The influence of weather conditions during gestation on life histories in a wild Arctic ungulate

Douhard, Mathieu; Loe, Leif Egil; Stien, Audun; Bonenfant, Christophe; Irvine, R. Justin; Veiberg, Vebjørn; Ropstad, Erik; Albon, Steve D.
Journal article, Peer reviewed
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Stien+The+influence+PRSB_Accepted+version+2016.pdf (957.6Kb)
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http://hdl.handle.net/11250/2454039
Utgivelsesdato
2016
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  • Journal articles (peer reviewed) [3922]
  • Publikasjoner fra Cristin - NMBU [4757]
Originalversjon
Proceedings of the Royal Society of London. Biological Sciences 2016, 283   10.1098/rspb.2016.1760
Sammendrag
The internal predictive adaptive response (internal PAR) hypothesis predicts

that individuals born in poor conditions should start to reproduce earlier if

they are likely to have reduced performance in later life. However, whether

this is the case remains unexplored in wild populations. Here,we use longitudinal

data from a long-term study of Svalbard reindeer to examine age-related

changes in adult female life-history responses to environmental conditions

experienced in utero as indexed by rain-on-snow (ROSutero). We show that

females experiencing high ROSutero had reduced reproductive success only

from 7 years of age, independent of early reproduction. These individuals

were able to maintain the same annual reproductive success between 2 and 6

years as phenotypically superior conspecifics that experienced low ROSutero.

Young females born after high ROSutero engage in reproductive events at

lower body mass (about 2.5 kg less) than those born after low ROSutero. The

mean fitness of females that experienced poor environmental conditions in

early lifewas comparable with that of females exposed to good environmental

conditions in early life. These results are consistent with the idea of internal

PAR and suggest that the life-history responses to early-life conditions can

buffer the delayed effects of weather on population dynamics.

climate change, cohort, development,

predictive adaptive response,

phenotypic plasticity, Svalbard reindeer
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