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.

中文翻译：

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与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，人们一直认为黑潮河不利于作为幼鱼的育苗地，因为在贫营养条件下浮游生物的站立种群较少。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。在这里，我们报告了什么样的分类群在大陆架水域 （CW） 和黑潮 （KW） 建立了幼鱼的群落结构。本研究分为 16 个目和 78 个科。中上层鱼类在 KW 中出现的数量比在 CW 中更多，而幼鱼的丰度在两个区域之间没有差异。多变量分析表明分类组成的区域差异，以 CW 的 Callionymidae、Bothidae、Labridae 和 Bregmacerotidae 为代表，KW 的 Gonostomatidae、Myctophidae 和 Notosudidae 为代表。鱼幼虫的丰度与环境盐度呈显著正相关，与 Gonostomatidae、Sigmops gracilis 和 Myctophum orientale 在 KW 中占主导地位，而 Labridae 的负相关在 CW 中大量出现。这些结果表明，来自沿海水域和黑潮水域的平流标本的混合物也有助于幼鱼群落具有高度的生物多样性和黑潮与其邻近水域之间的相当丰度。