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首页> 外文期刊>Russian journal of marine biology >The Characteristics of the Feeding Aggregation Formed by Humpback Whales, Megaptera novaeangliae (Borowski, 1781), in Senyavin Strait, off the Eastern Chukotka Coast, According to Photo-Identification Data
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The Characteristics of the Feeding Aggregation Formed by Humpback Whales, Megaptera novaeangliae (Borowski, 1781), in Senyavin Strait, off the Eastern Chukotka Coast, According to Photo-Identification Data

机译：根据照片识别数据，驼背鲸（Borowsa Novaeanglia（Borowski，1781），在Eastern Chukotka海岸上，Megaptera Novaeangliae（Borowski，1781）组成的特征

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摘要

This study provides the first description of the feeding aggregation recently formed by humpback whales in the Senyavin Strait, off eastern Chukotka. A total of 143 individuals were identified during the two summer and fall seasons of 2017 and 2018. More than half of the whales recorded in the first year were encountered again in the following year. The spatial distribution of feeding whales varied substantially between years, which may be explained by a shift in prey use. The structure of the feeding aggregation remained relatively stable, with a slightly higher number of new animals observed in the 2018 season. The estimated size of the aggregation was from 84 (+/- 1.5) to 90 (+/- 6.4) individuals in 2017 and from 105 (+/- 3.7) to 109 (+/- 6.2) individuals in 2018. A comparison of the whale photographs we took with the catalogues from other feeding grounds yielded matches with individuals recorded from the Chukchi Sea, Gulf of Anadyr, and waters off the Commander Islands and the eastern Aleutian Islands. Among the breeding grounds, matches were found only with catalogues of images collected from the waters off the Hawaiian Islands. Thus, we hypothesize that the feeding aggregation in the Senyavin Strait is relatively stable between seasons and within one season. There is some exchange of individuals with some other feeding grounds. This aggregation is formed mainly by whales of the Hawaiian subpopulation.
机译：本研究提供了最近由佛兰海峡两岸的驼背鲸最近形成的喂养聚集的第一个描述，从东部Chukotka。在2017年和2018年的两个夏季和秋季季节中共发现了143个个体。在第二年内再次遇到了第一年中记录的鲸鱼中的一半以上。饲养鲸鱼的空间分布在多年之间变化，这可以通过猛禽使用的转变来解释。饲养聚集的结构保持相对稳定，在2018季节中观察到略微较高的新动物。估计的汇总规模为2017年的84（+/- 1.5）至90（+/- 6.4）个体，2018年从105（+/- 3.7）到109（+/- 6.2）个体。比较我们与其他喂养场地的目录接受的鲸鱼照片会出现在Chukchi Sea，Anadyr海湾的个人与指挥官群岛和东部阿列迪群岛的争夺。在育种场所中，只发现匹配的比赛，只有从夏威夷群岛的水域收集的图像目录。因此，我们假设森林海峡的饲养聚集在季节和一个季节内相对稳定。有一些其他喂养场的个人交流。该聚合主要由夏威夷亚群的鲸鱼形成。

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