Impact of environmental and innate factors on the food habit of Chinese perch Siniperca chuatsi (Basilewsky) (Percichthyidae)

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	Impact of environmental and innate factors on the food habit of Chinese perch Siniperca chuatsi (Basilewsky) (Percichthyidae)
	Liang, Xu-Fang 1; Lin, Xiaotao 2; Li, Songqing 2; Liu, Jian-Kang 3
刊名	AQUACULTURE RESEARCH
	2008-01-23
卷号	39 期号:2 页码:150-157
关键词	Siniperca chuatsi food habit first feeding sensory modality feeding organ carnivorous fish
ISSN号	1355-557X
通讯作者	Liang, XF, Jinan Univ, Dept Biol, Guangzhou 510632, Peoples R China
中文摘要	Laboratory and field investigations were conducted to study the food habit of Chinese perch Siniperca chuatsi (Basilewsky) from first feeding through adult stage. Only fish larvae were consumed by Chinese perch larvae (2-21 days from hatching), and the presence of zooplankton did not have any significant effect on their survival rate. The ability of Chinese perch to feed on zooplankton is clearly limited by some innate factor. Instead of gill rakers, Chinese perch larvae have well-developed sharp teeth at the first feeding stage, and are well adapted to the piscivorous feeding habit unique to the larvae of Chinese perch, e.g. they bite and ingest the tails of other fish larvae. At the first feeding stage (2 days from hatching), daily rations were both very low, either in light or complete darkness. Although early-staged Chinese perch larvae (7-17 days from hatching) could feed in complete darkness, their daily rations were always significantly higher in light than in complete darkness. Late-staged Chinese perch larvae (21 days from hatching) were able to feed in complete darkness as well as in light, similar to the case of Chinese perch yearlings. Chinese perch yearlings (total length, 14-16 cm) consumed prey fish only and refused shrimp when visual cues were available (in light), but they consumed both prey when visual cues were not available (in complete darkness), suggesting that prey consumption by Chinese perch yearlings is affected by their sensory modality in predation. Both prey were found in the stomachs of similar-sized Chinese perch (total length, 14-32 cm) from their natural habitat, suggesting that shrimp are consumed by Chinese perch at night. Prey selection of Chinese perch with a length >38 cm, which consumed only fish in the field, appears to be based upon prey size instead of prey type. These results suggest that although environmental factors (e.g. light intensity) affect prey detection by Chinese perch, this fish is anatomically and behaviourally predisposed to prey on live fish from first feeding. This makes it a difficult fish to cultivate using conventional feeds.
英文摘要	Laboratory and field investigations were conducted to study the food habit of Chinese perch Siniperca chuatsi (Basilewsky) from first feeding through adult stage. Only fish larvae were consumed by Chinese perch larvae (2-21 days from hatching), and the presence of zooplankton did not have any significant effect on their survival rate. The ability of Chinese perch to feed on zooplankton is clearly limited by some innate factor. Instead of gill rakers, Chinese perch larvae have well-developed sharp teeth at the first feeding stage, and are well adapted to the piscivorous feeding habit unique to the larvae of Chinese perch, e.g. they bite and ingest the tails of other fish larvae. At the first feeding stage (2 days from hatching), daily rations were both very low, either in light or complete darkness. Although early-staged Chinese perch larvae (7-17 days from hatching) could feed in complete darkness, their daily rations were always significantly higher in light than in complete darkness. Late-staged Chinese perch larvae (21 days from hatching) were able to feed in complete darkness as well as in light, similar to the case of Chinese perch yearlings. Chinese perch yearlings (total length, 14-16 cm) consumed prey fish only and refused shrimp when visual cues were available (in light), but they consumed both prey when visual cues were not available (in complete darkness), suggesting that prey consumption by Chinese perch yearlings is affected by their sensory modality in predation. Both prey were found in the stomachs of similar-sized Chinese perch (total length, 14-32 cm) from their natural habitat, suggesting that shrimp are consumed by Chinese perch at night. Prey selection of Chinese perch with a length >38 cm, which consumed only fish in the field, appears to be based upon prey size instead of prey type. These results suggest that although environmental factors (e.g. light intensity) affect prey detection by Chinese perch, this fish is anatomically and behaviourally predisposed to prey on live fish from first feeding. This makes it a difficult fish to cultivate using conventional feeds.
学科主题	Fisheries
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries
研究领域[WOS]	Fisheries
关键词[WOS]	STRIKE-FEEDING-BEHAVIOR ; LATERAL-LINE ; SENSORY DEVELOPMENT ; LIGHT-INTENSITY ; FISHES ; LARVAE ; TURBIDITY ; ORGANS
收录类别	SCI
语种	英语
WOS记录号	WOS:000252586800005
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8292]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Jinan Univ, Dept Biol, Guangzhou 510632, Peoples R China 2.Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Liang, Xu-Fang,Lin, Xiaotao,Li, Songqing,et al. Impact of environmental and innate factors on the food habit of Chinese perch Siniperca chuatsi (Basilewsky) (Percichthyidae)[J]. AQUACULTURE RESEARCH,2008,39(2):150-157.
APA	Liang, Xu-Fang,Lin, Xiaotao,Li, Songqing,&Liu, Jian-Kang.(2008).Impact of environmental and innate factors on the food habit of Chinese perch Siniperca chuatsi (Basilewsky) (Percichthyidae).AQUACULTURE RESEARCH,39(2),150-157.
MLA	Liang, Xu-Fang,et al."Impact of environmental and innate factors on the food habit of Chinese perch Siniperca chuatsi (Basilewsky) (Percichthyidae)".AQUACULTURE RESEARCH 39.2(2008):150-157.