Environmental conditions during breeding modify the strength of mass-dependent carry-over effects in a migratory bird.
Environmental conditions during breeding modify the strength of mass-dependent carry-over effects in a migratory bird.
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DOI：
10.1371/journal.pone.0077783
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Bearhop S
中科院分区：
文献类型：
--
作者：
Harrison XA;Hodgson DJ;Inger R;Colhoun K;Gudmundsson GA;McElwaine G;Tregenza T;Bearhop S
在许多动物中，一个季节发生的过程会影响未来季节的繁殖成功和生存。这种遗留效应的强度多年来不太可能保持一致，但我们对能够改变其强度的过程的理解仍然有限。在这里，我们表明，在春季迁徙之前体重较高的雌性轻腹布伦特鹅在繁殖期间成功地养育了更多的后代，但只有在繁殖期间环境条件有利的年份。在繁殖期间的恶劣天气中，无论迁徙前的数量如何，所有鸟类的繁殖产量都会减少。我们的研究结果表明，通过最大化身体储存来促进繁殖所获得的繁殖效益的大小在年份之间存在显着波动，与繁殖季节的条件一致，残留效应能够在多大程度上驱动个体繁殖成功的差异。因此，虽然遗留效应对个体之间的适应度不对称具有相当大的影响力，但我们根据其对种群动态的影响来解释这些影响的能力取决于对随后季节中发生的适应度决定因素的了解。
In many animals, processes occurring in one season carry over to influence reproductive success and survival in future seasons. The strength of such carry-over effects is unlikely to be uniform across years, yet our understanding of the processes that are capable of modifying their strength remains limited. Here we show that female light-bellied Brent geese with higher body mass prior to spring migration successfully reared more offspring during breeding, but only in years where environmental conditions during breeding were favourable. In years of bad weather during breeding, all birds suffered reduced reproductive output irrespective of pre-migration mass. Our results suggest that the magnitude of reproductive benefits gained by maximising body stores to fuel breeding fluctuates markedly among years in concert with conditions during the breeding season, as does the degree to which carry-over effects are capable of driving variance in reproductive success among individuals. Therefore while carry-over effects have considerable power to drive fitness asymmetries among individuals, our ability to interpret these effects in terms of their implications for population dynamics is dependent on knowledge of fitness determinants occurring in subsequent seasons.
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影响因子：
2.3
作者：
Arnold, Todd W.
通讯作者：
Arnold, Todd W.
DOI：
10.1098/rspb.1995.0119
发表时间：
1995-07-22
影响因子：
4.7
作者：
GUDMUNDSSON, GA;BENVENUTI, S;AKESSON, S
通讯作者：
AKESSON, S
影响因子：
64.8
作者：
Hallett, TB;Coulson, T;Grenfell, BT
通讯作者：
Grenfell, BT
影响因子：
2.1
作者：
EBBINGE, BS
通讯作者：
EBBINGE, BS
DOI：
10.1098/rspb.2013.0110
发表时间：
2013-05-22
影响因子：
4.7
作者：
Betini, Gustavo S.;Griswold, Cortland K.;Norris, D. Ryan
通讯作者：
Norris, D. Ryan