Food ingestion, consumption and selectivity of pompano, Trachinotus ovatus (Linnaeus 1758) under different rotifer densities

文献类型： 外文期刊

第一作者： Ma, Zhenhua

作者： Ma, Zhenhua;Guo, Huayang;Zhang, Dianchang;Jiang, Shigui;Ma, Zhenhua;Hu, Chaoqun

作者机构：

关键词： food consumption;food ingestion;food selectivity;growth;survival rate;pompano Trachinotus ovatus

期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The growth, survival, food selection and consumption of pompano larvae under different rotifer densities as well as their colour preference during the rotifer feeding stage were examined in this study. Growth and survival of fish larvae were not significantly affected when rotifer density was between 10 and 20mL(-1). Fish larvae grew slower at 1 and 40 rotifersmL(-1) than at 10 and 20 rotifersmL(-1), and higher fish survival was achieved when fish larvae were exposed to 10 and 20 rotifersmL(-1). The rotifer density of 1mL(-1) not only reduced food ingestion during the early stage, but also delayed diet switch from rotifer to copepod nauplii. On 5days post hatching (DPH), larval pompano ingested more rotifers in dark-coloured tanks and ingested more rotifers when prey colour was green. Based on the results obtained in the present study, the culture of larval pompano larvae is recommended using dark wall tanks with a feeding density of 10-20 rotifersmL(-1) during the initial feeding stage. This study proposes a management protocol to use appropriate type and quantity of live food to feed pompano larvae in a hatchery rearing condition, which could be applicable to the culture of fish larvae in other marine fish species.

分类号： S9

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