In aquatic ecosystems around the world, gobies comprise one of the most diverse groups of fishes in estuaries. The Yangtze River estuary, the biggest estuary in the western Pacific, is a major habitat for larval gobies, with the peak spawning and breeding season occurring during late spring and summer. To investigate the adaptation mechanism of larval gobies to environmental factors, three models (a global generalized linear model, a generalized additive model, and a geographically weighted Poisson regression) were used to simulate and forecast the major habitat distributions of larval gobies based on the survey data from 2018 to 2020. Six species of gobies were studied: Rhinogobius giurinu, Odontamblyopus rubicundus, Tridentiger barbatus, Parachaeturichthys polynema, Tridentiger trigonocephalus, and Trypauchen vagina. The habitats for brackish species T. barbatus were mainly in freshwater (where, using the practical salinity scale, salinity is 0–1) of the south branch, whereas the marine species P. polynema was mainly caught in oligohaline waters (where salinity is 1–5) of the north branch. The other euryhaline species were near the exit of the north branch or dispersed throughout the surveyed region. Year, season, salinity, and sample location had significant effects (P < 0.001) on determining the habitat distributions of larval gobies. The geographically weighted Poisson regression identified that the temperature, depth, distance from the coast, and chlorophyll a had a significant effect (P < 0.001) on the local distribution of habitats. This work supplements information about the distribution of major habitats and their interactions with the environment for the ecologically important species of goby in the Yangtze estuary during the larval stage, and the conclusions provide a basis for the management of aquatic ecosystems and biological habitats.

中文翻译：

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河口环境异质性对戈壁科幼虫栖息地的影响

在世界各地的水生生态系统中，虾虎鱼是河口中最多样化的鱼类之一。长江口是西太平洋最大的河口，是虾虎鱼幼体的主要栖息地，春末和夏季是产卵繁殖的高峰期。为研究虾虎鱼幼体对环境因子的适应机制，基于调查，采用全局广义线性模型、广义加性模型和地理加权泊松回归三种模型模拟和预测虾虎鱼幼体主要栖息地分布从 2018 年到 2020 年的数据。研究了六种虾虎鱼：Rhinogobius giurinu、Odontamblyopus rubicundus、Tridentiger barbatus、Parachaeturichthys polynema、Tridentiger trigonocephalus和Trypauchen vagina。半咸水物种T. barbatus的栖息地主要在南支的淡水（使用实际盐度等级，盐度为 0-1），而海洋物种P. polynema主要在寡盐水域（盐度为 1） –5) 北支。其他广盐性物种靠近北分支的出口或分散在整个调查区域。年份、季节、盐度和采样位置有显着影响（P < 0.001) 确定虾虎鱼幼体的栖息地分布。地理加权泊松回归确定温度、深度、距海岸的距离和叶绿素a 对栖息地的局部分布有显着影响（P < 0.001）。该工作补充了长江口虾虎鱼幼体期主要栖息地分布及其与环境相互作用的信息，研究结论为水生生态系统和生物栖息地管理提供了依据。