Incubation strategy and hatching start time affect the duration of the nestling period in precocial Arctic-breeding sandpipers.
孵化策略和孵化开始时间会影响早成性北极繁殖鹬的雏鸟期持续时间。
Thomas Pagnon, François-Xavier Dechaume-Moncharmont, Anders Angerbjörn, Joël Bêty, Julien Bouvet, Glen Brown, Eric Buchel, Dorothee Ehrich, Léa Etchart, Ivan Fufachev, Jannik Hansen, Richard Lanctot, Johannes Lang, Christopher Latty, Nicolas Lecomte, Laura McKinnon, Jérôme Moreau, Jeroen Reneerkens, Sarah Saalfeld, Brigitte Sabard, Niels Schmidt, Benoit Sittler, Paul Smith, Aleksandr Sokolov, Vasiliy Sokolov, Natalia Sokolova, Rob van Bemmelen, Glenn Yannic, Loïc Bollache, Olivier Gilg (2026) Incubation strategy and hatching start time affect the duration of the nestling period in precocial Arctic-breeding sandpipers. Biol Lett (IF: 3) 2 区 22(4)
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Abstract
In bird species with precocial development, i.e. chicks acquire abilities to leave the nest soon after hatching, the nestling period during which parents warm their young in the nest by brooding them is short but critical to breeding success. The duration of the nestling period (DNP) depends on the hatching synchrony of eggs and the speed at which chicks acquire these abilities but may be indirectly affected by parental behaviour and temporal variations in temperature and predation. We assessed the effects of incubation strategy (bi- or uniparental), hatching start time, incubation initiation date and predation risk on the DNP in Arctic-breeding sandpipers. We found that the DNP was longer in biparental species (29.75 ± 8.95 h) compared with uniparental ones (25.82 ± 6.87 h) and was extended in nests where chicks began hatching during the colder 'night' hours. No effect of incubation initiation date or predation pressure was found on the DNP. We suggest that parental investment strategies and constraints related to circadian variations in temperature in chicks drive the DNP in Arctic-breeding sandpipers. These results help us better understand how different species may exhibit different behavioural responses during nesting to impending climate change.© 2026 The Authors.
对于早成性鸟类，即雏鸟孵化后不久即可离巢，亲鸟在巢中孵育幼鸟以使其温暖的育雏期虽然短暂，但对繁殖成功至关重要。育雏期的持续时间（DNP）取决于卵的孵化同步性和雏鸟获得离巢能力的速度，但也可能间接受到亲鸟行为以及温度和捕食压力的时序变化的影响。我们评估了孵化策略（双亲或单亲）、孵化开始时间、孵化开始日期和捕食风险对北极繁殖鹬类育雏期的影响。我们发现，双亲繁殖鸟类的育雏期（29.75 ± 8.95 小时）长于单亲繁殖鸟类（25.82 ± 6.87 小时），并且在雏鸟于较冷的“夜间”开始孵化的巢穴中，育雏期会延长。孵化开始日期或捕食压力对育雏期没有影响。我们认为，亲代投资策略以及雏鸟体温昼夜节律变化相关的限制因素驱动了北极繁殖鹬的DNP（延迟繁殖）。这些结果有助于我们更好地理解不同物种在筑巢期间如何对即将到来的气候变化表现出不同的行为反应。© 2026 作者所有。
Links
http://www.ncbi.nlm.nih.gov/pubmed/41980753http://dx.doi.org/10.1098/rsbl.2025.0670
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