Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae

doi:10.1007/s10641-008-9412-0

	Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae
	Shan, Xiu-Juan 1,2; Cao, Liang 1,2; Huang, Wei 1,2; Dou, Shuo-Zeng 1
	2009-09-01
发表期刊	ENVIRONMENTAL BIOLOGY OF FISHES
ISSN	0378-1909
卷号	86 期号:1 页码:121-130
文章类型	Article
摘要	We investigated the effects of the timing of first feeding (larvae in F0, F1, F2, F3 and S were first fed on day 3, 4, 5, 6 days after hatching (DAH) and unfed, respectively) on feeding, morphological changes, survival and growth in miiuy croaker larvae at 24A degrees C. The fed larvae initiated feeding on 3 DAH and reached point of no return (PNR) on 6 DAH. Larvae in F0 and F1 groups survived apparently better than F2 group at the end of the experiment on 36 DAH. High larval mortality occurred from 3 to 7 DAH in all feeding groups, accounting for 40% (F0, F1 and F2 groups) to 90% (F3 and S groups) of the total mortality. Larvae in F0 and F1 groups grew better than F2 group throughout the experiment. Eye diameter, body height, head height and mouth gape of the first feeding larvae were more sensitive to starvation than other morphometrics and could be used as indicators for evaluating their nutritional status. Results indicated that delayed first feeding over 1 day after yolk exhaustion could lead to poor larval survival and growth. To avoid starvation and obtain good growth in culturing, larvae feeding should be initiated within 1 day after yolk exhaustion at 24A degrees C.; We investigated the effects of the timing of first feeding (larvae in F0, F1, F2, F3 and S were first fed on day 3, 4, 5, 6 days after hatching (DAH) and unfed, respectively) on feeding, morphological changes, survival and growth in miiuy croaker larvae at 24A degrees C. The fed larvae initiated feeding on 3 DAH and reached point of no return (PNR) on 6 DAH. Larvae in F0 and F1 groups survived apparently better than F2 group at the end of the experiment on 36 DAH. High larval mortality occurred from 3 to 7 DAH in all feeding groups, accounting for 40% (F0, F1 and F2 groups) to 90% (F3 and S groups) of the total mortality. Larvae in F0 and F1 groups grew better than F2 group throughout the experiment. Eye diameter, body height, head height and mouth gape of the first feeding larvae were more sensitive to starvation than other morphometrics and could be used as indicators for evaluating their nutritional status. Results indicated that delayed first feeding over 1 day after yolk exhaustion could lead to poor larval survival and growth. To avoid starvation and obtain good growth in culturing, larvae feeding should be initiated within 1 day after yolk exhaustion at 24A degrees C.
关键词	Miichthys Miiuy Larvae Delayed Feeding Morphometrics Growth And Survival
学科领域	Ecology ; Marine & Freshwater Biology
DOI	10.1007/s10641-008-9412-0
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000271264000018
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/2630
专题	海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Shan, Xiu-Juan,Cao, Liang,Huang, Wei,et al. Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae[J]. ENVIRONMENTAL BIOLOGY OF FISHES,2009,86(1):121-130.
APA	Shan, Xiu-Juan,Cao, Liang,Huang, Wei,&Dou, Shuo-Zeng.(2009).Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae.ENVIRONMENTAL BIOLOGY OF FISHES,86(1),121-130.
MLA	Shan, Xiu-Juan,et al."Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae".ENVIRONMENTAL BIOLOGY OF FISHES 86.1(2009):121-130.

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