Community structure of fish larvae associated with advections of the Kuroshio and its neighboring waters

IF 3.8 3区 地球科学 Q1 OCEANOGRAPHY Progress in Oceanography Pub Date : 2025-02-01 DOI:10.1016/j.pocean.2024.103386
Toru Kobari , Yusuke Manako , Airi Hara , Kaori Yamanoue , Takafumi Azuma , Ryuji Fukuda , Yi-Chen Wang , Masafumi Kodama , Gen Kume
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Abstract

The Kuroshio has been long thought to be disadvantageous as nursery grounds for larval fishes due to the low plankton standing stocks under the oligotrophic conditions. Despite of the potential risk for survival and growth, early life stages of various fishes appear abundantly in the Kuroshio and its neighboring waters. Here, we report what kind of taxonomic groups establish community structure of larval fishes in the Continental shelf waters (CW) and the Kuroshio (KW). 16 orders and 78 families were classified in the present study. Mesopelagic fishes more abundantly appeared in the KW than in the CW, while larval fish abundance was not different between the two areas. Multivariate analysis demonstrated the regional difference of the taxonomic compositions, represented by Callionymidae, Bothidae, Labridae and Bregmacerotidae for the CW and Gonostomatidae, Myctophidae and Notosudidae for the KW. Abundance of fish larvae to ambient salinity exhibited significantly positive correlations for Gonostomatidae, Sigmops gracilis and Myctophum orientale predominated in the KW and negative correlations for Labridae appeared abundantly in the CW. These results suggest that mixture of advected specimens from the coastal and Kuroshio waters also contribute to larval fish community with high biodiversity and comparable abundance between the Kuroshio and its neighboring waters.
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黑潮及其邻近水域平流相关的鱼类幼虫群落结构
长期以来,人们一直认为黑潮在低营养条件下浮游生物存量低,不利于幼鱼的育苗。尽管存在生存和生长的潜在风险,但各种鱼类的早期生命阶段在黑潮及其邻近水域大量出现。本文报道了在大陆架水域(CW)和黑潮水域(KW)中,什么样的分类类群建立了幼鱼的群落结构。本研究共分为16目78科。中上层鱼类在长江流域的丰度高于长江流域,而幼鱼丰度在两个地区之间没有差异。多因素分析表明,长江三角洲地区的鱼类分类组成存在显著的区域差异,长江三角洲地区的鱼类分类组成主要以卡丽蝇科、双翅蝇科、唇形蝇科和小鳞蝇科为代表,长江三角洲地区的鱼幼虫丰度与环境盐度呈显著正相关,长江三角洲地区的鱼幼虫丰度与环境盐度呈显著正相关,而长江三角洲地区的鱼幼虫丰度与环境盐度呈显著负相关。这些结果表明,来自沿海和黑潮水域的平流标本混合也有助于黑潮与邻近水域之间具有较高生物多样性和丰度的幼虫群落。
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来源期刊
Progress in Oceanography
Progress in Oceanography 地学-海洋学
CiteScore
7.20
自引率
4.90%
发文量
138
审稿时长
3 months
期刊介绍: Progress in Oceanography publishes the longer, more comprehensive papers that most oceanographers feel are necessary, on occasion, to do justice to their work. Contributions are generally either a review of an aspect of oceanography or a treatise on an expanding oceanographic subject. The articles cover the entire spectrum of disciplines within the science of oceanography. Occasionally volumes are devoted to collections of papers and conference proceedings of exceptional interest. Essential reading for all oceanographers.
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