Publikation:

Coevolution of relative brain size and life expectancy in parrots

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Datum

2022

Autor:innen

Conde, Dalia A.
Baudisch, Annette
Bruslund, Simon
Iwaniuk, Andrew
Staerk, Johanna
Wright, Timothy F.
Young, Anna M.
McElreath, Mary Brooke

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-x0e0nqe9f0hp9
DOI (zitierfähiger Link)
https://doi.org/10.1098/rspb.2021.2397
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Open Access-Veröffentlichung
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Biologie: Publikationen
Exzellenzcluster "Centre for the Advanced Study of Collective Behaviour": Publikationen
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Proceedings of the Royal Society of London, Series B : Biological Sciences. Royal Society of London. 2022, 289(1971), 20212397. ISSN 0962-8452. eISSN 1471-2954. Available under: doi: 10.1098/rspb.2021.2397

Zusammenfassung

Previous studies have demonstrated a correlation between longevity and brain size in a variety of taxa. Little research has been devoted to understanding this link in parrots; yet parrots are well-known for both their exceptionally long lives and cognitive complexity. We employed a large-scale comparative analysis that investigated the influence of brain size and life-history variables on longevity in parrots. Specifically, we addressed two hypotheses for evolutionary drivers of longevity: the cognitive buffer hypothesis, which proposes that increased cognitive abilities enable longer lifespans, and the expensive brain hypothesis, which holds that increases in lifespan are caused by prolonged developmental time of, and increased parental investment in, large-brained offspring. We estimated life expectancy from detailed zoo records for 133 818 individuals across 244 parrot species. Using a principled Bayesian approach that addresses data uncertainty and imputation of missing values, we found a consistent correlation between relative brain size and life expectancy in parrots. This correlation was best explained by a direct effect of relative brain size. Notably, we found no effects of developmental time, clutch size or age at first reproduction. Our results suggest that selection for enhanced cognitive abilities in parrots has in turn promoted longer lifespans.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Psittaciformes, longevity, cognitive evolution,Bayesian structural equation model, cognitivebuffer hypothesis, expensive brain hypothesis

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ISO 690SMEELE, Simeon Q., Dalia A. CONDE, Annette BAUDISCH, Simon BRUSLUND, Andrew IWANIUK, Johanna STAERK, Timothy F. WRIGHT, Anna M. YOUNG, Mary Brooke MCELREATH, Lucy M. APLIN, 2022. Coevolution of relative brain size and life expectancy in parrots. In: Proceedings of the Royal Society of London, Series B : Biological Sciences. Royal Society of London. 2022, 289(1971), 20212397. ISSN 0962-8452. eISSN 1471-2954. Available under: doi: 10.1098/rspb.2021.2397
BibTex
@article{Smeele2022Coevo-57466,
  year={2022},
  doi={10.1098/rspb.2021.2397},
  title={Coevolution of relative brain size and life expectancy in parrots},
  number={1971},
  volume={289},
  issn={0962-8452},
  journal={Proceedings of the Royal Society of London, Series B : Biological Sciences},
  author={Smeele, Simeon Q. and Conde, Dalia A. and Baudisch, Annette and Bruslund, Simon and Iwaniuk, Andrew and Staerk, Johanna and Wright, Timothy F. and Young, Anna M. and McElreath, Mary Brooke and Aplin, Lucy M.},
  note={Article Number: 20212397}
}
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