Impacts of temperature on the scavenging efficiency by the deposit-feeding holothurian Apostichopus japonicus on a simulated organic pollutant in the bivalve-macroalage polyculture from the perspective of nutrient budgets

doi:10.1016/j.aquaculture.2013.05.009

	Impacts of temperature on the scavenging efficiency by the deposit-feeding holothurian Apostichopus japonicus on a simulated organic pollutant in the bivalve-macroalage polyculture from the perspective of nutrient budgets
	Yuan, Xiutang 1,2; Yang, Hongsheng2 ; Meng, Leiming 1; Wang, Lili 1; Li, Yan1 ; Yang, HS
	2013-08-25
发表期刊	AQUACULTURE
ISSN	0044-8486
卷号	406 页码:97-104
文章类型	Article
摘要	Self-pollutants of bivalve biodeposits and macroalgae detritus from the raft bivalve-macroalgae polyculture may lead to increased organic matter in sediment; the deposit-feeding holothurians can effectively scavenge such particulate wastes and plays an ecological role of bioremediation. In the present study, a diet containing 75% biodeposits and 25% powdered algae was prepared to simulate the common mixture of the organic self-pollutant from the bivalve-macroalgae culture system. Furthermore, carbon and nitrogen budgets of the sea cucumber Apostichopus japonicus fed on the diet were modeled at six seawater temperatures (5, 10, 15, 20, 25 and 30 degrees C), and the influence of temperatures on the scavenging efficiencies for carbon and nitrogen (SEC, SEN) were assessed. The results showed that the temperature had a significant impact on the physio-ecological parameters (rates of ingestion, defecation, growth, respiration and excretion) and further affected the carbon and nitrogen budgets. The established budgets (except 30 degrees C) showed that the carbon loss in feces accounted for the majority of the ingested carbon (61.9-73.2%), and the nitrogen loss in feces and in excretion had similar percentages (42.6-83.6% and 42.9-61.2%, respectively). Meanwhile, the percentage of the ingested carbon or nitrogen allocated to growth increased, but that allocated to respiration carbon or excretion nitrogen decreased, with temperatures increasing from 5 degrees C to 15 degrees C; by contrast, the allocation patterns was exact opposite from 15 degrees C to 25 degrees C. At 30 degrees C, no carbon or nitrogen was ingested or defecated due to aestivation. The SEC and SEN at different temperatures were 0.0-38.5 mg C g(-1) d(-1) and 0.0-6.7 mg N g(-1) d(-1), respectively. A trend was observed that SEC and SEN peaked at 15 degrees C and decreased above and below this temperature; moreover, the SEC and SEN decreased to zero when temperature increased to 30 degrees C. Our study suggests that the scavenging capacity of A. japonicus on the organic pollutant from the raft polyculture is greatly influenced by the ambient water temperature, and the regression equations between SEC or SEN and the temperature (T) yield as SEC = 0.7639 T-3 - 11.886 T-2 + 48.745 T - 30.316 and SEN = 0.2324 T-3 - 3.0212 T-2 + 10.869 T - 6.760. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.; Self-pollutants of bivalve biodeposits and macroalgae detritus from the raft bivalve-macroalgae polyculture may lead to increased organic matter in sediment; the deposit-feeding holothurians can effectively scavenge such particulate wastes and plays an ecological role of bioremediation. In the present study, a diet containing 75% biodeposits and 25% powdered algae was prepared to simulate the common mixture of the organic self-pollutant from the bivalve-macroalgae culture system. Furthermore, carbon and nitrogen budgets of the sea cucumber Apostichopus japonicus fed on the diet were modeled at six seawater temperatures (5, 10, 15, 20, 25 and 30 degrees C), and the influence of temperatures on the scavenging efficiencies for carbon and nitrogen (SEC, SEN) were assessed. The results showed that the temperature had a significant impact on the physio-ecological parameters (rates of ingestion, defecation, growth, respiration and excretion) and further affected the carbon and nitrogen budgets. The established budgets (except 30 degrees C) showed that the carbon loss in feces accounted for the majority of the ingested carbon (61.9-73.2%), and the nitrogen loss in feces and in excretion had similar percentages (42.6-83.6% and 42.9-61.2%, respectively). Meanwhile, the percentage of the ingested carbon or nitrogen allocated to growth increased, but that allocated to respiration carbon or excretion nitrogen decreased, with temperatures increasing from 5 degrees C to 15 degrees C; by contrast, the allocation patterns was exact opposite from 15 degrees C to 25 degrees C. At 30 degrees C, no carbon or nitrogen was ingested or defecated due to aestivation. The SEC and SEN at different temperatures were 0.0-38.5 mg C g(-1) d(-1) and 0.0-6.7 mg N g(-1) d(-1), respectively. A trend was observed that SEC and SEN peaked at 15 degrees C and decreased above and below this temperature; moreover, the SEC and SEN decreased to zero when temperature increased to 30 degrees C. Our study suggests that the scavenging capacity of A. japonicus on the organic pollutant from the raft polyculture is greatly influenced by the ambient water temperature, and the regression equations between SEC or SEN and the temperature (T) yield as SEC = 0.7639 T-3 - 11.886 T-2 + 48.745 T - 30.316 and SEN = 0.2324 T-3 - 3.0212 T-2 + 10.869 T - 6.760. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
关键词	Apostichopus Japonicus Bivalve-macroalgae Polyculture Self-pollutant Scavenging Efficiency Temperature Aestivation
学科领域	Fisheries ; Marine & Freshwater Biology
DOI	10.1016/j.aquaculture.2013.05.009
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Fisheries ; Marine & Freshwater Biology
WOS类目	Fisheries ; Marine & Freshwater Biology
WOS记录号	WOS:000322316400013
WOS关键词	CUCUMBER AUSTRALOSTICHOPUS-MOLLIS ; SEA-CUCUMBER ; MUSSEL FARMS ; IN-SITU ; GROWTH ; SELENKA ; CONSUMPTION ; ESTIVATION ; JUVENILES ; CULTURE
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
引用统计	被引频次：14[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/337002/16477
专题	海洋生态与环境科学重点实验室
通讯作者	Yang, HS
作者单位	1.State Ocean Adm, Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, 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	Yuan, Xiutang,Yang, Hongsheng,Meng, Leiming,et al. Impacts of temperature on the scavenging efficiency by the deposit-feeding holothurian Apostichopus japonicus on a simulated organic pollutant in the bivalve-macroalage polyculture from the perspective of nutrient budgets[J]. AQUACULTURE,2013,406:97-104.
APA	Yuan, Xiutang,Yang, Hongsheng,Meng, Leiming,Wang, Lili,Li, Yan,&Yang, HS.(2013).Impacts of temperature on the scavenging efficiency by the deposit-feeding holothurian Apostichopus japonicus on a simulated organic pollutant in the bivalve-macroalage polyculture from the perspective of nutrient budgets.AQUACULTURE,406,97-104.
MLA	Yuan, Xiutang,et al."Impacts of temperature on the scavenging efficiency by the deposit-feeding holothurian Apostichopus japonicus on a simulated organic pollutant in the bivalve-macroalage polyculture from the perspective of nutrient budgets".AQUACULTURE 406(2013):97-104.

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