Environmental drivers of population-level variation in the migratory and diving ontogeny of an Arctic top predator.
Environmental drivers of population-level variation in the migratory and diving ontogeny of an Arctic top predator.
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DOI：
10.1098/rsos.211042
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发表时间：
2022-03
影响因子：
3.5
通讯作者：
Smout S
中科院分区：
文献类型：
--
作者：
Grecian WJ;Stenson GB;Biuw M;Boehme L;Folkow LP;Goulet PJ;Jonsen ID;Malde A;Nordøy ES;Rosing-Asvid A;Smout S
制定使幼鱼能够存活到性成熟的迁徙战略，对于利用季节性生境的物种至关重要。对于通过屏气潜水觅食的动物来说，这需要生理和觅食技能发展的结合。在这里，我们评估如何迁移和潜水行为发展的第一年的生活中的一个迁移北极顶级捕食者，格陵兰海豹Pagophilus groenlandicus，使用动物携带的卫星中继数据记录器跟踪。我们揭示了从格陵兰海和西北大西洋繁殖种群的38个青少年之间的迁移运动和潜水行为的差异的相似性。在这两个地区，迁徙过程中的驻留和短暂行为时期与食物供应的代表因素有关：海冰浓度和测深深度。然而，虽然个体发育的潜水行为是相似的两个种群的青少年在第一个25天，在此之后，格陵兰海的动物进行更短，更浅的潜水，更密切相关的海冰比西北大西洋的动物。总之，这些结果突出了内在和外在因素在塑造早期生活行为中的作用。生命早期经历的环境条件的变化可能会影响不同种群对北冰洋生态系统快速变化的反应。
The development of migratory strategies that enable juveniles to survive to sexual maturity is critical for species that exploit seasonal niches. For animals that forage via breath-hold diving, this requires a combination of both physiological and foraging skill development. Here, we assess how migratory and dive behaviour develop over the first year of life for a migratory Arctic top predator, the harp seal Pagophilus groenlandicus, tracked using animal-borne satellite relay data loggers. We reveal similarities in migratory movements and differences in diving behaviour between 38 juveniles tracked from the Greenland Sea and Northwest Atlantic breeding populations. In both regions, periods of resident and transitory behaviour during migration were associated with proxies for food availability: sea ice concentration and bathymetric depth. However, while ontogenetic development of dive behaviour was similar for both populations of juveniles over the first 25 days, after this time Greenland Sea animals performed shorter and shallower dives and were more closely associated with sea ice than Northwest Atlantic animals. Together, these results highlight the role of both intrinsic and extrinsic factors in shaping early life behaviour. Variation in the environmental conditions experienced during early life may shape how different populations respond to the rapid changes occurring in the Arctic ocean ecosystem.
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影响因子：
1.6
作者：
Bennett, K. A.;McConnell, B. J.;Fedak, M. A.
通讯作者：
Fedak, M. A.
DOI：
10.1139/cjz-77-5-737
发表时间：
1999-05-01
期刊：
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
影响因子：
--
作者：
Burns, JM
通讯作者：
Burns, JM
影响因子：
30.7
作者：
Fossheim, Maria;Primicerio, Raul;Dolgov, Andrey V.
通讯作者：
Dolgov, Andrey V.
影响因子：
2.3
作者：
Freitas, Carla;Lydersen, Christian;Kovacs, Kit M.
通讯作者：
Kovacs, Kit M.
影响因子：
2.4
作者：
HAMMILL, MO;KINGSLEY, MCS;SMITH, TG
通讯作者：
SMITH, TG