Demographic drivers of reproductive failure in a threatened bird: Insights from a decade of data DOI Creative Commons
Fay Morland, John G. Ewen, Anna W. Santure

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(36)

Published: Aug. 26, 2024

Hatching failure affects up to 77% of eggs laid by threatened bird species, yet the true prevalence and drivers egg fertilization versus embryo mortality as underlying mechanisms hatching are unknown. Here, using ten years data comprising 4,371 a population bird, hihi ( Notiomystis cincta) , we investigate relative importance infertility death explore population-level factors associated with them. We show that 1,438 failed hatch (33% eggs) between 2010 2020, 83% due mortality, majority failing in early stages embryonic development. In most comprehensive estimates rates wild date, find accounts for around 17% overall is more prevalent where smaller male biased. Male embryos likely die during development than females, but no effect sex on successful embryos. Offspring fathered within-pair males have significantly higher inbreeding levels extra-pair offspring; however, nor paternity mortality. Accurately distinguishing this study provides unique insight into causes reproductive over long-term scale reveals complex risks small sizes reproduction species.

Language: Английский

Demographic drivers of reproductive failure in a threatened bird: Insights from a decade of data DOI Creative Commons
Fay Morland, John G. Ewen, Anna W. Santure

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(36)

Published: Aug. 26, 2024

Hatching failure affects up to 77% of eggs laid by threatened bird species, yet the true prevalence and drivers egg fertilization versus embryo mortality as underlying mechanisms hatching are unknown. Here, using ten years data comprising 4,371 a population bird, hihi ( Notiomystis cincta) , we investigate relative importance infertility death explore population-level factors associated with them. We show that 1,438 failed hatch (33% eggs) between 2010 2020, 83% due mortality, majority failing in early stages embryonic development. In most comprehensive estimates rates wild date, find accounts for around 17% overall is more prevalent where smaller male biased. Male embryos likely die during development than females, but no effect sex on successful embryos. Offspring fathered within-pair males have significantly higher inbreeding levels extra-pair offspring; however, nor paternity mortality. Accurately distinguishing this study provides unique insight into causes reproductive over long-term scale reveals complex risks small sizes reproduction species.

Language: Английский

Citations

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