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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Invasion and abundance of reef-inhabiting fishes in the Vellar estuary, southeast coast of India, especially the lionfish Pterois volitans Linnaeus
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Invasion and abundance of reef-inhabiting fishes in the Vellar estuary, southeast coast of India, especially the lionfish Pterois volitans Linnaeus

机译：印度东南沿海维拉河口的珊瑚礁鱼类的入侵和丰富，特别是l鱼Pterois volitans Linnaeus

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摘要

Invasion of lionfish Pterois volitans and other reef fishes in the Vellar estuary, Parangipettai (lat. 11 degrees 29'N, long. 79 degrees 46'E) southeast coast of India, is a cause of concern as it may affect the local fishing communities and the estuarine ecological conditions. The present study reveals the temporal variations in the abundance of the reef-inhabiting fishes in the different estuarine locations (oyster beds, mangroves and bridge). A total of 184 individuals of lionfish were captured from the three locations during April-September 2011. Different size groups were caught (total length 6.8-17.8 cm) throughout the sampling period and captured individuals were more (n=164) near the mangroves and oyster beds, than those (n=20) found near the man-made structure (bridge). Percentage capture of lionfish was higher during August. Other reef-associated fishes were also recorded and the family Acanthuridae (n=51) was dominant and the remaining taxa were less abundant. Twelve prey taxa were identified through gut content analysis of lionfish that includes penaeids, non-penaeids and teleosts. The dominant taxa were found to be the shrimps, indicating the colonization of lionfish in newer but natural habitat as feeding ground. The human-driven changes may facilitate the successful intrusion of reef fishes in the estuaries.
机译：狮子鱼Pterois volitans和其他珊瑚礁鱼类在印度东南海岸Parangipettai（纬度11度29'N，长79度46度E）的Vellar河口的入侵，令人担忧，因为它可能会影响当地的捕鱼社区和河口的生态条件。本研究揭示了不同河口位置（牡蛎床，红树林和桥梁）珊瑚礁鱼类的丰富度随时间变化。 2011年4月至9月，从这三个地点捕获了总共184头individuals鱼。在整个采样期间，捕获了不同大小的种群（总长6.8-17.8 cm），在红树林和红树林附近捕获的个体更多（n = 164）。牡蛎床，而不是在人造结构（桥梁）附近发现的牡蛎床（n = 20）。八月份。鱼的捕获百分比较高。还记录了其他与珊瑚礁相关的鱼类，Acanthuridae科（n = 51）居主导地位，剩余的分类单元数量较少。通过对l鱼的肠道含量分析确定了十二个捕食类群，其中包括对虾，非对虾和硬骨鱼。发现主要的分类单元是虾，这表明of鱼在较新的但自然栖息地作为觅食地的殖民地。人为驱动的变化可能有助于成功地将礁鱼入侵河口。

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