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首页> 外文期刊>Russian journal of marine biology >The distribution of zooplankton and bowhead whales, Balaena mysticetus Linnaeus, 1758, in Akademiya Bay, Sea of Okhotsk
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The distribution of zooplankton and bowhead whales, Balaena mysticetus Linnaeus, 1758, in Akademiya Bay, Sea of Okhotsk

机译：鄂霍次克海Akademiya湾浮游动物和弓头鲸的分布，1758年，巴拉那神秘鱼（Balaena mysticetus Linnaeus）

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摘要

The modern pattern of distribution and feeding habits of the bowhead whale, Balaena mysticetus, in the Sea of Okhotsk are studied. The existence of a feeding aggregation of this whale species in the southwesternmost portion (apex) of Ulban Bay has been confirmed. There, the animals feed in shallow waters with depths of 3-5 m, which are only slightly larger than their body height. The quantitative composition and species structure of zooplankton at the stations that were set near feeding whales have been analyzed. In the samples taken in the immediate proximity to the feeding whales, the abundance of zooplankton reached 31409 ind./m(3), with the average value of 17565 ind./m(3). The lowest abundance, from 56 to 1879 ind./m(3) (mean 927 ind./m(3)), was in the samples from western Konstantin Bay, where bowhead whales were not observed. In 16 samples collected in the immediate proximity to the feeding whales in the shallow waters of Ulban Bay, the average zooplankton biomass was 547.9 mg/m(3), which is 3.9 times higher than that in the samples from waters where the whales were absent. Copepods dominated quantitatively at all the stations in Akademiya Bay. The proportion of euphausiids in the zooplankton biomass was lower than 1%, both near the feeding whales and in the absence of whales.
机译：研究了鄂霍次克海弓头鲸Balaena mysticetus的现代分布和摄食习惯。已经证实这种鲸鱼物种在乌尔班湾最西南部分（顶点）有捕食性聚集。在那里，动物在浅水区3-5 m处觅食，深度仅比它们的身高稍大。分析了在喂食鲸鱼附近的站点浮游动物的定量组成和物种结构。在紧邻捕食鲸的样本中，浮游动物的丰度达到31409 ind./m(3），平均值为17565 ind./m(3）。丰度最低的是从56到1879 ind./m（3）（平均927 ind./m(3）），来自康斯坦丁湾西部的样本中，未观察到弓鲸。在乌尔班湾浅水区靠近捕食鲸的16个样本中，浮游动物的平均生物量为547.9 mg / m（3），比无鲸的水域的样本高3.9倍。 。 pe足类在Akademiya湾的所有站点上都占主导地位。无论是在喂食鲸鱼附近还是在没有鲸鱼的情况下，浮游动物生物量中的虾青素含量均低于1％。

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