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

doi:10.1007/s10641-008-9412-0

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	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
刊名	ENVIRONMENTAL BIOLOGY OF FISHES
	2009-09-01
卷号	86 期号:1 页码:121-130
关键词	Miichthys Miiuy Larvae Delayed Feeding Morphometrics Growth And Survival
ISSN号	0378-1909
DOI	10.1007/s10641-008-9412-0
文献子类	Article
英文摘要	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.
学科主题	Ecology ; Marine & Freshwater Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000271264000018
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2631]
专题	海洋研究所_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
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.