Individual specialization on fishery discards by lesser black-backed gulls (Larus fuscus)
Individual specialization on fishery discards by lesser black-backed gulls (Larus fuscus)
复制标题
小黑背鸥（Larus fuscus）对渔业丢弃物的个体专门化
DOI：
10.1093/icesjms/fsv021
复制
发表时间：
2015
影响因子：
3.3
通讯作者：
Niels T. Hintzen
中科院分区：
文献类型：
--
作者：
C. Tyson;J. Shamoun‐Baranes;E. V. van Loon;K. Camphuysen;Niels T. Hintzen
虽然海鸟渔业协会有很好的记录，但这项研究主要来自基于船舶的调查，因此个人对丢弃可用性的反应在很大程度上是未知的。作为荷兰对小黑背鸥（Larus fuscus）长期研究的一部分，在整个繁殖期间用GPS标签跟踪成年人的精细运动。本研究的目的是确定较小的黑背鸥是否利用瓦登海的渔业丢弃物，并研究这种行为可能产生的后果。在瓦登海在平日，跟踪鸟类主要与区域，其中渔船是已知的操作（深沟）。在所有的个人组合（n = 40），有一个显着减少使用瓦登海在周末时，船队不运作。8名女性，谁显着增加了他们的使用瓦登海在整个繁殖期的工作日，主要是负责这种模式。周末丢弃资源的损失主要导致这八个人转向陆地觅食区。巢出勤率和总觅食时间在工作日和周末之间是一致的，这表明周末的资源转移并不影响日常的时间预算。因此，似乎较小的黑背鸥专门从事丢弃利用能够灵活地应对暂时失去丢弃切换到替代资源。
While seabird-fishery associations are well documented, this research primarily comes from ship-based surveys and consequently individual level responses to discard availability are largely unknown. As part of a long-term study on lesser black-backed gulls (Larus fuscus) in the Netherlands, the fine-scale movements of adults were tracked with GPS tags throughout the breeding period. The aim of this study was to determine if lesser black-backed gulls were utilizing fishery discards in the Wadden Sea and to examine possible consequences of this behaviour. Within the Wadden Sea during weekdays, tracked birds predominately associated with zones where fishing vessels are known to operate (deep gullies). Across all individuals combined (n = 40), there was a significantly reduced use of the Wadden Sea during weekends when the fleets were not operating. Eight females, who markedly increased their use of the Wadden Sea during weekdays throughout the breeding period, were largely responsible for this pattern. The loss of discard resources on weekends primarily resulted in these eight individuals switching to terrestrial foraging areas. Nest attendance and total foraging time were consistent between weekdays and weekends, suggesting that resource shifts on weekends did not impact daily time budgets. As such, it appears that lesser black-backed gulls specializing on discard utilization are able to flexibly respond to the temporary loss of discards by switching to alternative resources.
DOI：
--
发表时间：
2015-10
期刊：
--
影响因子：
--
作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
通讯作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
北部塘鹅桑属的性别特异性觅食行为：发生率和影响
影响因子：
2.5
作者：
Stauss C
通讯作者：
Stauss C
影响因子：
5.7
作者：
Votier, Stephen C.;Bearhop, Stuart;Newton, Jason
通讯作者：
Newton, Jason