文献类型： 外文期刊

作者： Xu, Wengang ¹ ; Zeng, Jun ² ; Mei, Weiping ² ; Jiang, Lianglong ¹ ; Manabe, Soichiro ⁴ ; Wu, Yanqin ⁵ ; Liu, Liming ¹ ;

作者机构： 1.Yantai Univ, Sch Ocean, Yantai 264005, Peoples R China

2.Guangxi Acad Sci, Nanning 530007, Peoples R China

3.Inst Beibu Gulf Marine Ind, Fangchenggang 538000, Peoples R China

4.Nagasaki Univ, Grad Sch Fisheries & Environm Sci, Nagasaki 8528521, Japan

5.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

关键词： growth indices; point-of-no-return; feeding incidence; satiation; diel feeding rhythm; Monacanthidae

期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2023 年 13 卷 21 期

页码：

收录情况： SCI

摘要： Background: We investigated the growth and feeding characteristics of threadsail filefish, Stephanolepis cirrhifer, during early ontogenesis. Methods: The growth indices of hatchlings fed compound feed were measured from 0 to 50 days post hatching (dph). The absorption time of the yolk sac and oil globule, as well as the rate of first feeding were measured to characterise the early growth stage and determine the point-of-no-return (PNR). Feeding characteristics and rhythms were investigated under a light/dark cycle and under continuous light. Results: Growth indices increased significantly at 24, 28, 30, 40, 45, and 50 dph. The yolk sac and oil globules were completely absorbed before 4 dph, indicative of a short mixed-nutrition period at 3-4 dph. Under starvation conditions, the first feeding rate was highest (86%) at 0.5 dph and then decreased to 53.3% at 1.5 dph and 26.2% at 2 dph, suggesting that the PNR occurs at 1.5-2 dph. The feeding peak appeared at 15:00-18:00 and under light conditions, while the feeding trough appeared at 0:00-3:00. Conclusions: Compound feed supplied adequate nutrition for early growth and development. The peaks and troughs of feeding times were indicative of daytime feeding behaviour. These results provide guidance for successful rearing of filefish seedlings and juveniles.