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Growth, bioaccumulation and fodder potentials of the seaweed Sargassum hemiphyllum grown in oyster and fish farms of South China
Yu, Zonghe; Robinson, Shawn M. C.; Xia, Jianjun; Sun, Hongyan; Hu, Chaoqun; Hu, CQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China.
2016
Source PublicationAQUACULTURE
Volume464Pages:459-468
AbstractFish and shellfish aquaculture industries in Dapeng Cove, South China, have profound impacts on the coastal marine ecosystem in recent years. In this study, the local seaweed Sargassum hemiphyllum was introduced into oyster and fish farms as a biofilter during winter and early spring of 2013. Results showed that S. hemiphyllumgrown in the fish farm suffered greater fouling and herbivory than these in the oyster farm. Thalli grown in both sites could achieve high growth rates during January and February; meanwhile, the specific growth rates for wet weight (SGR(W)) of seaweeds in the oysters farm at January, February and April samplings (7.16, 6.16 and 2.25% d(-1), respectively) were all higher than those in the fish farm at the same sampling period (2.89, 3.19 and 0.90% d(-1), respectively). The mean fresh-weight biomass increments for thalli grown in the oyster and fish farms were similar to 40 and 7 times, respectively, during the 4-month culture period. The N and P contents of S. hemiphyllum grown in both sites all varied significantly over time, and P contents of thalli in the oyster farm always higher than those of the fish farm at the same sampling period. The C, N and P bioaccumulation capacities of S. hemiphyllum cultured in the oyster farm were 15016.90 +/- 6241.78, 1112.45 +/- 459.81 and 134.69 +/- 55.46 mg thallus(-1), respectively, over the study period, which were all significantly higher than those in the fish farm(2457.46 +/- 1073.78, 180.27 +/- 75.23 and 13.69 +/- 5.88 mg thallus(-1), respectively). The nutritional composition of S. hemiphyllum in both sites were always comparable or higher than those of the seaweeds used as holothurian feed, and the heavy metal contents (Pb, Cd and Cr) were all well below the maximum allowable concentration for aquatic feed; thalli grown in the oyster farm were always with higher crude protein and fat contents, but lower heavy metal levels than those in the fish farm. We consider large-scale cultivation of S. hemiphyllum in Dapeng Cove can efficiently relieve the total environmental impact of aquaculture on the ecosystem of the whole bay, while give high yield of seaweed product with better quality. Statement of relevance: This article provides useful information on the seaweed-based integrated multi-trophic aquaculture in fish and shellfish farms, and it can also give suggestion for the practice of large-scale cultivation of Sargassum and sustainable aquaculture in coastal area. (C) 2016 Elsevier B.V. All rights reserved.
Department[Yu, Zonghe; Xia, Jianjun; Hu, Chaoqun] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Appl Marine Biol Guangdong Prov, CAS Key Lab Trop Marine Bioresources & Ecol LMB, Guangzhou 510301, Guangdong, Peoples R China; [Yu, Zonghe; Xia, Jianjun; Hu, Chaoqun] Chinese Acad Sci, South China Sea Inst Oceanol, Chinese Acad Sci LAMB, Guangzhou 510301, Guangdong, Peoples R China; [Robinson, Shawn M. C.] Fisheries & Oceans Canada, St Andrews Biol Stn, St Andrews, NB E5B 2L9, Canada; [Sun, Hongyan] South China Agr Univ, Coll Marine Sci, Guangzhou 510642, Guangdong, Peoples R China ; LMB
KeywordAquaculture Pollution Integrated Multi-trophic Aquaculture (Imta) Seaweed Nutritional Value Bioaccumulation
Subject AreaFisheries ; Marine & Freshwater Biology
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15269
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding AuthorHu, CQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Yu, Zonghe,Robinson, Shawn M. C.,Xia, Jianjun,et al. Growth, bioaccumulation and fodder potentials of the seaweed Sargassum hemiphyllum grown in oyster and fish farms of South China[J]. AQUACULTURE,2016,464:459-468.
APA Yu, Zonghe,Robinson, Shawn M. C.,Xia, Jianjun,Sun, Hongyan,Hu, Chaoqun,&Hu, CQ .(2016).Growth, bioaccumulation and fodder potentials of the seaweed Sargassum hemiphyllum grown in oyster and fish farms of South China.AQUACULTURE,464,459-468.
MLA Yu, Zonghe,et al."Growth, bioaccumulation and fodder potentials of the seaweed Sargassum hemiphyllum grown in oyster and fish farms of South China".AQUACULTURE 464(2016):459-468.
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