Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae

doi:10.1111/j.1095-8649.2004.00601.x

	Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae
	Dou, SZ ; Masuda, R ; Tanaka, M ; Tsukamoto, K ; Dou, SZ, Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
	2005-02-01
发表期刊	JOURNAL OF FISH BIOLOGY
ISSN	0022-1112
卷号	66 期号:2 页码:362-377
文章类型	Article
摘要	The effects of the timing of initial feeding (0, 1, 2 3 and 4 days after yolk exhaustion) and temperature (15, 18 and 21degrees C) on the point-of-no-return (PNR), survival and growth of laboratory-reared Japanese flounder Paralichthys olivaceus larvae were studied under controlled conditions. The larvae reached PNR on 7(.)7, 5(.)2 and 4(.)2 days-post-hatching (dph) at 15, 18 and 2 V C, respectively. At each temperature, larval growth did not differ significantly among the delayed initial feedings 1 day before PNR but decreased significantly in larvae first fed after that. In the treatments where initial feeding was equally delayed, larvae grew significantly faster at 18 and 21degrees C than at 15degrees C. The larvae survived apparently better at 15 and 18degrees C than at 21degrees C when initial feeding was equally delayed. At each temperature, survival of the larvae first fed before PNR did not differ noticeably, while delayed initial feeding after that apparently reduced their survival. These results indicated that there existed a negatively temperature-dependent PNR in the Japanese flounder larvae. Survival and growth of the larvae strongly depended on temperature as well as the timing of initial feeding. High temperature accelerated the yolk exhaustion and growth of the larvae and thus reduced their starvation tolerance and survival. To avoid potential starvation mortality and obtain good growth, the Japanese flounder larvae must establish successful initial feeding within 2 days after yolk exhaustion at 15degrees C and within 1 day at both 18 and 21degrees C. (C) 2005 The Fisheries Society of the British Isles.; The effects of the timing of initial feeding (0, 1, 2 3 and 4 days after yolk exhaustion) and temperature (15, 18 and 21degrees C) on the point-of-no-return (PNR), survival and growth of laboratory-reared Japanese flounder Paralichthys olivaceus larvae were studied under controlled conditions. The larvae reached PNR on 7(.)7, 5(.)2 and 4(.)2 days-post-hatching (dph) at 15, 18 and 2 V C, respectively. At each temperature, larval growth did not differ significantly among the delayed initial feedings 1 day before PNR but decreased significantly in larvae first fed after that. In the treatments where initial feeding was equally delayed, larvae grew significantly faster at 18 and 21degrees C than at 15degrees C. The larvae survived apparently better at 15 and 18degrees C than at 21degrees C when initial feeding was equally delayed. At each temperature, survival of the larvae first fed before PNR did not differ noticeably, while delayed initial feeding after that apparently reduced their survival. These results indicated that there existed a negatively temperature-dependent PNR in the Japanese flounder larvae. Survival and growth of the larvae strongly depended on temperature as well as the timing of initial feeding. High temperature accelerated the yolk exhaustion and growth of the larvae and thus reduced their starvation tolerance and survival. To avoid potential starvation mortality and obtain good growth, the Japanese flounder larvae must establish successful initial feeding within 2 days after yolk exhaustion at 15degrees C and within 1 day at both 18 and 21degrees C. (C) 2005 The Fisheries Society of the British Isles.
关键词	Delayed Initial Feeding Temperature First-feeding Flounder Larvae Growth And Survival Point-of-no-return (Pnr)
学科领域	Fisheries ; Marine & Freshwater Biology
DOI	10.1111/j.1095-8649.2004.00601.x
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000227413400005
引用统计	被引频次：67[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/337002/1786
专题	海洋生态与环境科学重点实验室
通讯作者	Dou, SZ, Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Tokyo, Ocean Res Inst, Tokyo 1648639, Japan 3.Kyoto Univ, Field Sci Educ & Res Ctr, Kyoto 625, Japan 4.Kyoto Univ, Div Appl Biosci, Grad Sch Agr, Kyoto 6068502, Japan
推荐引用方式 GB/T 7714	Dou, SZ,Masuda, R,Tanaka, M,et al. Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae[J]. JOURNAL OF FISH BIOLOGY,2005,66(2):362-377.
APA	Dou, SZ,Masuda, R,Tanaka, M,Tsukamoto, K,&Dou, SZ, Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.(2005).Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae.JOURNAL OF FISH BIOLOGY,66(2),362-377.
MLA	Dou, SZ,et al."Effects of temperature and delayed initial feeding on the survival and growth of Japanese flounder larvae".JOURNAL OF FISH BIOLOGY 66.2(2005):362-377.

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