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Fin whale (Balaenoptera physalus) song pattern in the southern Chukchi Sea

机译：鳍鲸（Balaenoptera featheralus）南楚科希海的歌曲模式

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摘要

The number of migrating fin whales (Balaenoptera physalus) appears to be increasing in the Pacific Arctic after changes in the marine ecosystem and recovering from depletion by commercial whaling. Fin whale songs are sequences of sounds produced repeatedly, and they may be used for population structure assessments. However, little is known about song types and population structures in the Pacific Arctic. We recorded fin whale songs using a fixed passive acoustic monitoring system from July 2012 to June 2015 in the southern Chukchi Sea. We randomly selected one hour of data from each week of the study period and measured the inter-pulse intervals (IPIs) of the songs. Songs were detected from August to November 2012-2014. All songs had a sequence of doublets with two IPIs (10.5 and 19.6 s), and they were similar to previously reported songs of whales from the eastern North Pacific in 2001-2013 but differed from those of whales from the Bering Sea and northeastern Chukchi Sea in 2007-2010. These results suggest that one group of fin whales migrated to the southern Chukchi Sea from the eastern North Pacific in 2012-2014, or the song changed. Comparing songs from different areas of the Pacific Arctic during the same years will reveal whether this group dispersed in this area.
机译：迁移鳍鲸（Balaenoptera Feakyalus）的数量似乎在太平洋北极后在海洋生态系统的变化后越来越大，通过商业捕鲸从消耗中恢复。鳍鲸歌是反复产生的声音序列，它们可用于人口结构评估。然而，很少有关于太平洋北极地区的歌曲类型和人口结构。我们使用从2012年7月至2015年6月在南楚奇希海的固定被动声学监测系统录制了鳍鲸歌曲。我们从研究时期的每周随机选择了一小时的数据，并测量了歌曲的脉冲间隔（IPIS）。从8月到2012 - 2014年11月检测到歌曲。所有歌曲都有一系列具有两个IPIS（10.5和19.6秒）的双峰，他们与先前报告的2001 - 2013年从东北太平洋的鲸鱼歌曲相似，但与来自飞行海和东北楚奇海的鲸鱼不同2007 - 2010年。这些结果表明，一群鳍鲸在2012 - 2014年从东北太平洋迁移到南楚奇海，或者歌曲改变了。在同一年中比较太平洋北极不同地区的歌曲将揭示该集团是否分散在该领域。

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