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Effects of diesel oil on the polychaete Annelida in model benthic ecosystem

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Acta Oceanologica Sinica 1994年第3期13卷 425-431页

作者： Tang Senming Chen Xiaolin Zhuang Dongfa Wu Shengsan Lin Yu Cai Ziping and Zheng Fengwu(This project was supported by the National Natural Science Foundation of China.(Third Institute of oceanography, State Oceanic Administration,Xiamen 361005, China)

An experiment about the effect of diesel oil pollution on the model benthic ecosystem was conducted inthe land-based tank at the 3rd Institute of Oceanography, State Oceanic Administration, in Xiamen, added with No.0 diesel oil at concentrations of 5, 25, 125, 625 mg/dm3 in water of series sub-tanks for 16 h. The changes in polychaete community were studied in the period of two weeks with results that though all concentrations did not basically altered the population structure and composition, the total biomass decreased significantly and individualstended to be smaller in size. The average weight of individual decreased with the increase of diesel pollutant stress.

关键词： polychaete benthic ecosystem model experiment diesel oil pollution effect

Applicability of Perinereis aibuhitensis Grube for Fish Waste Removal from Fish Cages in Sanggou Bay,P.R.China

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Journal of Ocean University of China 2017年第2期16卷 294-304页

作者： FANG Jinghui JIANG Zengjie JANSEN Henrice M. HU Fawen FANG Jianguang LIU Yi GAO Yaping DU Meirong Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research InstituteQingdao 266071P.R.China Institute of Marine Research Bergen 5817Norway Institute for Marine Resources and Ecosystem Studies Yerseke 4400 ABthe Netherlands Marine Biology Institute of Shandong Province Qingdao 266100P.R.China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237P.R.China

The present study investigated the applicability of integrated polychaete-fish culture for fish waste removal to offset negative impact induced by organic benthic enrichment.A field study demonstrated that deposition rate was significantly higher underneath the fish farm than that in control area.The material settling under the farm was characterized by a high amount of fish feces(45%) and uneaten feed(27%).Both feeding rate(FR) and apparent digestibility rate(ADR) increased with decreasing body weight,as was indicated by significantly a higher rate observed for the groups containing smaller individuals in a lab study.The nutrient in fresh deposited material(De) was higher than that in sediments collected under the farm(Se),resulting in lower feces production but higher apparent digestibility rate for the De group as feeding rate was similar.Consequently,higher nutrient removal efficiency was observed in the De group.A mass balance approach indicated that approximately 400–500 individuals m^(-2) is required for removing all waste materials deposited underneath the fish farm,whereas abundance can be lower(about 300–350 individuals m^(-2)) when only the fish waste needs to be removed.The results showed that a significant amount of waste had been accumulated in the fish cages in Sanggou Bay.The integration of fish with P.aibuhitensis seems promising for preventing organic pollution in the sediment and therefore is an effective strategy for mitigating negative effect of fish farms.Thus such integration can become a new IMTA(integrated multi-trophic aquaculture) model in Sanggou Bay.

关键词： polychaete fish cage farming IMTA carbon nitrogen environmental recovery

A new record ofAuchenoplax Ehlers, 1887 (Polychaeta： Ampharetidae) from the East China Sea

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Acta Oceanologica Sinica 2018年第10期37卷 145-147页

作者： SUI Jixing LI Xinzheng Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Center for Ocean Mega-Science Chinese Academy of Sciences Qingdao 266071 China University of Chinese Academy of Sciences Beijing 100049 China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 China

A new record of the ampharetid genus Auchenoplax, A. worsfoldi Jirkov and Leontovich, 2013, is reported and described from the East China Sea. The specimens agree well with the original description of Auchenoplax worsfoldi with two pairs of branchiae, two thoracic uncinigers with enlarged neuropodia and 12 abdominal uncinigerous segments. The present specimens have long and filiform branchiae extending to thoracic chaetiger 9, which was not included in the original description. This is the first record of this species in Chinese waters.

关键词： polychaete Auchenoplax taxonomy East China Sea

POPULATION DYNAMICS AND PRODUCTION OF NEANTHES JAPONIC A (IZUKA)IN A SHRIMP POND

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Chinese Journal of Oceanology and Limnology 1993年第4期11卷 360-367页

作者：丘建文吴宝铃 First Institute of.Oceanography SOA Qingdao. 266003

During late February to mid-March, 1991, when mature N. japonica swarmed in the sea surface off Jimo County, Qingdao, seawater containing numerous early embryos was pumped into a nearby 2.7 ha. muddy-sand shrimp pond, where the embryos continued to develop. 800000 Penaeus chinensis seedlings were introduced into the pond on May 30, 1991. Monthly benthic samplings were carried out to determine the population dynamics and production of N. japonica in this atypical environ -ment.The density of N. japonica varied from 0 to 20400 ind./m2. The predation of P. chinensis was considered to be responsible for the mass mortality of N. japonica in June through July, when the worms were 2.2-3.3cm in length and lived in the top 2-4cm sediment. From August to September of 1991, the hottest period in the site, there was no substantial mortality of N. japonica as reported in earlier literature. This was explained by the deeper burrowing of the’ worms that protected them from predation by shrimps.Monthly biomass ranged

关键词： polychaete Neanthes japonica population dynamics growth production