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首页> 外文期刊>Lakes & Reservoirs >Ontogenic Changes in Prey Ingested by Nile perchrn(Lates niloticus) Caught in Nyanza Gulf of Lake Victoria,rnKenya
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Ontogenic Changes in Prey Ingested by Nile perchrn(Lates niloticus) Caught in Nyanza Gulf of Lake Victoria,rnKenya

机译:肯尼亚肯尼亚维多利亚湖Nyanza湾捕捞的尼罗河鲈(Nates perilrn)捕食的本体的变化

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摘要

A total of 289 fish were analysed in this study, with Caradina nilotica (44%) being the dominant food item in their diet,rnwhile tilapia (8%) contributed the least. Haplochromines, unidentified fish prey and juvenile Nile perch also werernobserved. An ontogenic shift was observed, with C. nilotica contributing highest (61.1%) of the diet of fingerlings, butrndecreasing to 21% in the diet of adults. Nile perch contributed 35.7% of the diet in the adults and 8.1% in the fingerlings.rnThis study indicates Nile perch is a predatory fish, feeding mainly on C. nilotica, haplochromines, tilapia, Nile perch andrnother fish materials.
机译:本研究共分析了289条鱼,其中Caradina nilotica(44%)是其饮食中的主要食物,而罗非鱼(8%)的贡献最少。还观察到了单倍色素,未知的猎物和尼罗河鲈幼鱼。观察到个体发生变化,尼罗罗非鱼对鱼种的饮食贡献最大(61.1%),而在成年人的饮食中却下降到21%。尼罗河鲈占成年人日粮的35.7%,鱼种占8.1%。rn该研究表明,尼罗河鲈是掠食性鱼类,主要以尼罗罗非鱼,单倍铬素,罗非鱼,尼罗河鲈和其他鱼类为食。

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