Abundance, development stage, and size of decapod larvae through the Bering and Chukchi Seas during summer

Abundance, development stage, and size of decapod larvae through the Bering and Chukchi Seas during summer
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夏季白令海和楚科奇海十足目幼虫的数量、发育阶段和大小

DOI:
10.1007/s00300-017-2103-6
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发表时间:
2017
期刊:
影响因子:
1.7
通讯作者:
T.
T.
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Landeira;J.M.;Matsuno;K.;Yamaguchi;A.;Hirawake;T.;Kikuchi;T.

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甲壳类十足目动物是构成亚北极/北极地区海底生态系统的关键组成部分,并支持最大的渔业之一,但其幼虫动态基本上是未知的。为了调查在这一地区的十足类幼虫群落的变化,我们分析了浮游生物样品收集在2007年和2008年夏季沿着东南白令海和楚科奇海。在2008年巡航期间,利用底拖网捕捞法研究了成鱼种群的分布情况。Pagurusspp.,Hyasspp.,最丰富的物种是重要的商业物种Chionoeclampa bairdi和Chionoeclampa opilio。底栖成体的分布与浮游幼虫的分布有关,可能有利于在适当生境附近补充和维持种群。C. bairdi,C. opilio和Hyasspp.比2007年更丰富。C. opilio表现出显着的纬度模式,其中较大的尺寸发生在较高的纬度与不同的温度和食物条件。我们认为,年度变化的丰度和发育阶段的结构,浮游幼虫似乎是有关的1个月的延迟在采样期,并没有决定在这两年观察到的对比环境条件。
Crustacean decapods are key components that structure the benthic ecosystems in the Subarctic/Arctic regions and support one of the largest fishery industries, but their larval dynamics are largely unknown. To investigate variability in decapod larvae community in this region, we analysed plankton samples collected during the summers of 2007 and 2008 along the southeastern Bering and Chukchi Seas. Distribution of adult population was studied using bottom trawling during 2008 cruise. Larvae ofPagurusspp.,Hyasspp., and the commercially importantChionoecetes bairdiandChionoecetes opiliowere the most abundant species. The distribution of benthic adults linked to those of planktonic larvae and may favour recruitment near suitable habitats and the maintenance of the populations. Earlier larval stages ofC. bairdi, C. opilio, andHyasspp. were more abundant in 2008 than in 2007. The body size ofC. opilioshowed a significant latitudinal pattern, in which larger sizes occurred at higher latitudes in association with distinct temperature and food conditions. We argue that annual changes in abundance and developmental stage structure of planktonic larvae seemed to be related to the 1 month delay in the sampling period and are not determined by the contrasting environmental conditions observed in both years.
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