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首页> 外文期刊>Indian Journal of Fisheries >Food spectrum and dietary preferences of the Indian anchovy Stolephorus indicus (van Hasselt, 1823) from Thiruvananthapuram coast, Kerala
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Food spectrum and dietary preferences of the Indian anchovy Stolephorus indicus (van Hasselt, 1823) from Thiruvananthapuram coast, Kerala

机译：来自喀拉拉邦的Thiruvananthapulam海岸的印度凤尾鱼STOLEPHORUS指数（van hasselt，1823）的食物谱和膳食偏好

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摘要

The food preferences of the Indian anchovy Stolephorus indicus (van Hasselt, 1823) along the Thiruvananthapuram coast of Kerala was studied for a period of one year from June 2013 to May 2014, dividing the entire period into three seasons as pre-monsoon, monsoon and post-monsoon. A total of 141 samples were collected and the gut contents were analysed. The principal food item was the crustaceans which included copepods, lucifers, mysids, Acetes and amphipods. The other preferred prey items were molluscs (bivalves and gastropods), small fishes, tintinnids and dinoflagellates. The gastrosomatic and stomach fullness indices revealed almost uniform feeding preferences with copepods being the preferred food item throughout the three seasons. Analysis of variance showed significant (p0.05) dominance of copepods and mysids in monthly consumption. No significant (p0.05) seasonal variation was observed in the gut contents of S. indicus. Analyses of the different prey indices [prey diversity index (H), niche width indices (B) and prey evenness indices (e)] of S. indicus for the three seasons indicated an almost uniform distribution of prey species throughout the study period which directly indicate the abundance of the prey items and indirectly indicate a stable potential fishery and ecosystem.
机译：在2013年6月至2014年5月，研究了印度凤尾鱼沿岸的印度凤尾鱼STOLEPORUS奖（VAN HASSELT，1823）的食物偏好（VAN HASSELT，1823年），为期一年至2014年5月，将整个时期分成三季，作为季风普通话，季风和季风后季风。收集总共141个样品，分析肠道内容物。主要食品是甲壳类动物，包括甲壳类动物，包括桡足类，荧光素，肌体，血管和两栖动物。其他优选的猛禽物品是软体动物（双纤维和胃胃），小鱼，丁尼肽和丁络物。胃古类和胃丰满指数揭示了几乎均匀的喂养偏好，桡足类是在整个三个季节的首选食品中。方差分析显示在每月消费中的桡足类和肌苷的显着（p＆ 0.05）。在S. inclatus的肠道内容中观察到不显着（p＆ 0.05）季节性变化。不同猎物指数的分析[猎物分集指数（h），3个季节的Implus indics of s. indipus的exce oders指数（e）]在整个研究期间几乎均匀地分布了猎物物种表示猎物项目的丰富，间接地表明稳定的潜在渔业和生态系统。

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