Abstract Distribution patterns of fish at early life stages can have profound effects on their development and survival. Here, diversity, distribution, and abundance patterns of ichthyoplankton assemblages were investigated in some inlets of the northern Persian Gulf during 2013–2014. A total of 21,440 fish larvae belonging to 30 families were identified, with Clupeidae, Gobiidae and Sillaginidae being the most dominant families. Spatial segregation of stations and species-environmental ordination patterns were observed according to multivariate analyses. Two larger inlets and one which had freshwater input supported higher abundances of fish larvae, whereas the smallest inlet and the sea station were dominated by fish eggs. The highest and the lowest abundances of ichthyoplankton were observed in April and December, respectively. Our results suggest that there are temporal and spatial variations in ichthyoplankton assemblages of the northern Persian Gulf. Both generalized linear mixed model and distance-based redundancy analysis revealed that water temperature, transparency, and depth were the key variables affecting the larval fish abundance. The results of this study provide valuable insights into fish larval ecology in shallow subtropical estuaries and inlets and help to explore how fish larvae respond to space–time environmental conditions.

中文翻译：

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波斯湾北部一些入口处浮游鱼类组合的多样性、分布和丰度模式

摘要 生命早期鱼类的分布格局对其发育和生存具有深远的影响。在这里，2013-2014 年期间在波斯湾北部的一些入口调查了浮游鱼类组合的多样性、分布和丰度模式。共鉴定出属于30科的21,440条鱼幼虫，其中以鮟鱇科、鮟鱇科和新鲇科为优势科。根据多变量分析观察到站点的空间隔离和物种-环境排序模式。两个较大的入口和一个有淡水输入的入口支持较高丰度的鱼幼虫，而最小的入口和海洋站以鱼卵为主。分别在 4 月和 12 月观察到浮游鱼的最高和最低丰度。我们的研究结果表明，波斯湾北部的浮游鱼类组合存在时间和空间变化。广义线性混合模型和基于距离的冗余分析都表明水温、透明度和深度是影响幼鱼丰度的关键变量。这项研究的结果提供了对浅亚热带河口和入口处的鱼类幼虫生态学的宝贵见解，并有助于探索鱼类幼体如何响应时空环境条件。