Publikation: Natal legacies cause social and spatial marginalization during dispersal
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Early-life experiences can drive subsequent variation in social behaviours, but how differences among individuals emerge remains unknown. We combined experimental manipulations with GPS-tracking to investigate the pathways through which developmental conditions affect social network position during the early dispersal of wild red kites (Milvus milvus). Across 211 juveniles from 140 broods, last-hatched chicks—the least competitive—had the fewest number of peer encounters after fledging. However, when food supplemented, they had more encounters than all others. Using 4425 bird-days of GPS data, we revealed that this was driven by differential responses to competition, with less competitive individuals naturally spreading out into marginal areas, and clustering in central foraging areas when food supplemented. Our results suggest that early-life adversities can cause significant natal legacies on individual behaviour beyond independence, with potentially far-reaching consequences on the social and spatial structure of animal populations.
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CATITTI, Benedetta, Martin U. GRÜEBLER, Damien R. FARINE, Urs G. KORMANN, 2024. Natal legacies cause social and spatial marginalization during dispersal. In: Ecology Letters. Wiley. 2024, 27(2), e14366. ISSN 1461-023X. eISSN 1461-0248. Available under: doi: 10.1111/ele.14366BibTex
@article{Catitti2024Natal-69321, year={2024}, doi={10.1111/ele.14366}, title={Natal legacies cause social and spatial marginalization during dispersal}, number={2}, volume={27}, issn={1461-023X}, journal={Ecology Letters}, author={Catitti, Benedetta and Grüebler, Martin U. and Farine, Damien R. and Kormann, Urs G.}, note={Article Number: e14366} }
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