Feeding behavior and digestive physiology in sea cucumber Apostichopus japonicus

doi:10.1016/j.physbeh.2014.11.051

	Feeding behavior and digestive physiology in sea cucumber Apostichopus japonicus
	Sun, Jiamin 1,3; Zhang, Libin 1; Pan, Yang1,2 ; Lin, Chenggang 1; Wang, Fang 3; Kan, Rentao 4; Yang, Hongsheng1
	2015-02-01
发表期刊	PHYSIOLOGY & BEHAVIOR
卷号	139 期号:2015 页码:336-343
文章类型	Article
摘要	The feeding behavior and digestive physiology of the sea cucumber, Apostichopus japonicus are not well understood. A better understanding may provide useful information for the development of the aquaculture of this species. In this article the tentacle locomotion, feeding rhythms, ingestion rate (IR), feces production rate (FPR) and digestive enzyme activities were studied in three size groups (small, medium and large) of sea cucumber under a 12 h light/12 h dark cycle. Frame-by-frame video analysis revealed that all size groups had similar feeding strategies using a grasping motion to pick up sediment particles. The tentacle insertion rates of the large size group were significantly faster than those of the small and medium-sized groups (P< 0.05). Feeding activities investigated by charge coupled device cameras with infrared systems indicated that all size groups of sea cucumber were nocturnal and their feeding peaks occurred at 02:00-04:00. The medium and large-sized groups also had a second feeding peak during the day. Both IR and FPR in all groups were significantly higher at night than those during the daytime (P <0.05). Additionally, the peak activities of digestive enzymes were 2-4 h earlier than the peak of feeding. Taken together, these results demonstrated that the light/dark cycle was a powerful environment factor that influenced biological rhythms of A. japonicus, which had the ability to optimize the digestive processes for a forthcoming ingestion. (c) 2014 Elsevier Inc. All rights reserved.
关键词	Sea Cucumber Apostichopus Japonicus Size Tentacle Feeding Rhythm Digestive Enzyme
DOI	10.1016/j.physbeh.2014.11.051
收录类别	SCI
语种	英语
WOS记录号	WOS:000349574400046
引用统计	被引频次：46[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/337002/25379
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, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ocean Univ China, Qingdao 266003, Shandong, Peoples R China 4.Shandong Blue Ocean Sci & Technol Co Ltd, Laizhou 261400, Shandong, 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	Sun, Jiamin,Zhang, Libin,Pan, Yang,et al. Feeding behavior and digestive physiology in sea cucumber Apostichopus japonicus[J]. PHYSIOLOGY & BEHAVIOR,2015,139(2015):336-343.
APA	Sun, Jiamin.,Zhang, Libin.,Pan, Yang.,Lin, Chenggang.,Wang, Fang.,...&Yang, Hongsheng.(2015).Feeding behavior and digestive physiology in sea cucumber Apostichopus japonicus.PHYSIOLOGY & BEHAVIOR,139(2015),336-343.
MLA	Sun, Jiamin,et al."Feeding behavior and digestive physiology in sea cucumber Apostichopus japonicus".PHYSIOLOGY & BEHAVIOR 139.2015(2015):336-343.

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