AEI 9:223-230 (2017)  -  DOI: https://doi.org/10.3354/aei00226

Uptake of farming wastes by sea cucumber Apostichopus japonicus in polyculture systems of abalone Haliotis discus hannai: evidence from C and N stable isotopes

Bin Xia1,2, Zhen-Long Sun1, Yong-Jun Sun3, Qin-Feng Gao1,4,*, Shuang-Lin Dong1,4, Li Li1,4, Hai-Shen Wen1,4, Jian-Xiang Feng1,4

1Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, Shandong Province 266003, PR China
2Marine Science and Engineering College, Qingdao Agriculture University, Qingdao, Shandong Province 266109, PR China
3Research Office, Homey Group Co., Ltd., Rongcheng 264306, PR China
4Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong Province 266235, PR China
*Corresponding author:

ABSTRACT: With the development of intensive aquaculture, worldwide concerns are increasingly focused on the biological control of farming wastes for the purpose of reducing nutrient loadings. In the present study, 5 experimental polyculture systems combining abalone and sea cucumber (SC) as different inter-species biomass ratios, i.e. 100:0, 70:30, 50:50, 30:70 and 0:100 (referred to as Group A, B, C, D and E, respectively), were set up to evaluate the potential of sea cucumber Apostichopus japonicus as scavengers to alleviate the farming wastes derived from the co-culture of abalone Haliotis discus hannai. Growth performance and significant isotopic shifts of the SCs in Groups B, C and D demonstrated the uptake of farming wastes, i.e. feces and uneaten feed residues. The proportional contributions of SC assimilated from uneaten feed residues, feces and sea mud were 21.7, 62.5 and 15.8% in Group B, 18.5, 54.3 and 27.2% in Group C, 11.5, 44.4 and 44.1% in Group D, respectively. The results revealed that sea cucumber had great potential to become an effective organic extractive species and aid in the concordant reduction of farming wastes in polyculture systems. The biomass ratio of abalone to sea cucumber 70:30 was recommended for aquaculture practice as providing the greatest economic and environmental benefits.


KEY WORDS: Abalone · Sea cucumber · Polyculture · Isotope mixing model · Nutrient loadings


Full text in pdf format  
Cite this article as: Xia B, Sun ZL, Gao QF, Dong SL, Li L, Wen HS, Feng JX (2017) Uptake of farming wastes by sea cucumber Apostichopus japonicus in polyculture systems of abalone Haliotis discus hannai: evidence from C and N stable isotopes. Aquacult Environ Interact 9:223-230. https://doi.org/10.3354/aei00226

Export citation
Mail this link - Contents Mailing Lists - RSS
- -