Metabolic characteristics of sea cucumber Apostichopus japonicus (Selenka) during aestivation

doi:10.1016/j.jembe.2005.09.010

	Metabolic characteristics of sea cucumber Apostichopus japonicus (Selenka) during aestivation
	Yang, HS; Zhou, Y; Zhang, T; Yuan, XT ; Li, XX ; Liu, Y; Zhang, FS
	2006-03-21
发表期刊	JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
ISSN	0022-0981
卷号	330 期号:2 页码:505-510
文章类型	Article
摘要	Metabolic characteristics of the sea cucumber Aposticholpus japonicus (Selenka) during aestivation were studied in the laboratory. The effects of water temperature on oxygen consumption rate (OCR) and ammonia-N excretion rate (AER) in A. japonicus were determined by the Winkler and Hypobromite methods, respectively. Mature (large, 148.5 +/- 15.4 g, medium 69.3 +/- 6.9 g) and immature (small, 21.2 +/- 4.7 g) individuals aestivated at water temperatures of 20 and 25 degrees C, respectively. The metabolic characteristics of mature individuals were different from immature individuals during this period. The OCR of mature sea cucumbers peaked at 20 degrees C, and then dropped significantly at higher temperatures, whereas the OCR of the immature animals continued to increase slightly, even beyond the aestivation temperature. The AER of mature individuals peaked at 20 T, while that of the immature animals peaked at 25 degrees C. The relationships between dry weight (DW) and absolute oxygen consumption (R) and absolute ammonia-N excretion (N) could be described by the regression equation R or N=aW(b). With the exception of 15 degrees C, the O/N ratios (calculated in atomic equivalents) of large size sea cucumbers was close to 20 across the temperatures used in this study, indicating that their energy Source was a combination of lipid and protein. Oil the other hand, apart from small individuals maintained at 10 degrees C, the O/N ratios of the medium and small sea Cucumbers were close to 10, indicating that protein was their major energy source. The O/N ratios in all size groups remained unchanged after aestivation was initiated. (c) 2005 Elsevier B.V. All rights reserved.; Metabolic characteristics of the sea cucumber Aposticholpus japonicus (Selenka) during aestivation were studied in the laboratory. The effects of water temperature on oxygen consumption rate (OCR) and ammonia-N excretion rate (AER) in A. japonicus were determined by the Winkler and Hypobromite methods, respectively. Mature (large, 148.5 +/- 15.4 g, medium 69.3 +/- 6.9 g) and immature (small, 21.2 +/- 4.7 g) individuals aestivated at water temperatures of 20 and 25 degrees C, respectively. The metabolic characteristics of mature individuals were different from immature individuals during this period. The OCR of mature sea cucumbers peaked at 20 degrees C, and then dropped significantly at higher temperatures, whereas the OCR of the immature animals continued to increase slightly, even beyond the aestivation temperature. The AER of mature individuals peaked at 20 T, while that of the immature animals peaked at 25 degrees C. The relationships between dry weight (DW) and absolute oxygen consumption (R) and absolute ammonia-N excretion (N) could be described by the regression equation R or N=aW(b). With the exception of 15 degrees C, the O/N ratios (calculated in atomic equivalents) of large size sea cucumbers was close to 20 across the temperatures used in this study, indicating that their energy Source was a combination of lipid and protein. Oil the other hand, apart from small individuals maintained at 10 degrees C, the O/N ratios of the medium and small sea Cucumbers were close to 10, indicating that protein was their major energy source. The O/N ratios in all size groups remained unchanged after aestivation was initiated. (c) 2005 Elsevier B.V. All rights reserved.
关键词	Sonoran Mud Turtle Kinosternon-sonoriense Oxygen-consumption Temperature Toad Frog
学科领域	Ecology ; Marine & Freshwater Biology
DOI	10.1016/j.jembe.2005.09.010
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000236627300007
引用统计	被引频次：125[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/337002/5482
专题	海洋生态与环境科学重点实验室海洋生物技术研发中心
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.S Australian Res & Dev Inst, S Australian Aquat Sci Ctr, W Beach, SA 5024, Australia
推荐引用方式 GB/T 7714	Yang, HS,Zhou, Y,Zhang, T,et al. Metabolic characteristics of sea cucumber Apostichopus japonicus (Selenka) during aestivation[J]. JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,2006,330(2):505-510.
APA	Yang, HS.,Zhou, Y.,Zhang, T.,Yuan, XT.,Li, XX.,...&Zhang, FS.(2006).Metabolic characteristics of sea cucumber Apostichopus japonicus (Selenka) during aestivation.JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,330(2),505-510.
MLA	Yang, HS,et al."Metabolic characteristics of sea cucumber Apostichopus japonicus (Selenka) during aestivation".JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY 330.2(2006):505-510.

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