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Biofouling development in marine fish farm influenced by net colour, immersion period and environmental conditions
Aquaculture Research ( IF 2 ) Pub Date : 2020-04-24 , DOI: 10.1111/are.14648
Rikka Reyes 1 , Annabelle Norte‐Campos 2 , Nathaniel C. Añasco 1 , Sheila Mae S. Santander‐de Leon 1
Affiliation  

Biofouling poses low productivity and high maintenance in aquaculture. This study simulated the nets of fish cages to investigate biofouling composition and development as influenced by net colour, immersion period and environmental conditions. Yellow and green net panels were immersed for 60 days and sampled at 7, 15, 30, 45 and 60 days. Results revealed that biofouling composition was dominated by Bryozoan Bugula sp. (31%–38% cover), tanaids Tanaidae (64–146 individuals.100 cm‐2) and nematodes Linhomoeidae and Oncholaimidae (142–189 individuals.100 cm‐2). Biofouling development was observed in succession patterns of harpacticoid–nematode–amphipod–tanaid in yellow nets and amphipod–nematode in green nets. Water velocity within the cages significantly and positively influenced the total cover, biomass and the densities of amphipods, bivalves, polychaetes, fish eggs and bryozoans. Polychaetes, gastropods, fish eggs and macroalgae were present in green nets and absent in yellow nets at 7 days. Uniformity of biofouling assemblage in both net colours was observed beyond 7 days which may be largely explained by brown biofilm formation. The result of the study revealed the dynamics of biofouling in a marine fish farm and provides vital information for developing strategies in biofouling management to lessen its impacts.

中文翻译:

净色,浸泡时间和环境条件对海水鱼养殖场生物污损发展的影响

生物污损造成水产养殖的低生产率和高维护性。这项研究模拟了鱼笼网,以研究受网色,浸泡时间和环境条件影响的生物结垢组成和发育情况。将黄色和绿色的网状板浸入60天,并在7、15、30、45和60天取样。结果表明,生物污垢成分主要由苔藓虫Bugula sp。引起。(覆盖率31%–38%),tanaids ana科(64–146个个体。100cm ‐2)和线虫Linhomoeidae和Oncholaimidae(142–189个个体.100 cm ‐2)。在黄色网中的类捕食线虫-线虫-两栖动物-tanaid和绿色网中的两栖动物-线虫的连续模式中观察到了生物污染的发展。网箱内的水流速显着且积极地影响了总覆盖率,生物量以及两栖动物,双壳类,多毛类,鱼卵和苔藓动物的密度。在7天时,绿网中有多毛cha,腹足纲动物,鱼卵和大型藻类,黄网中则无。超过7天观察到两种净颜色的生物污垢组合的均匀性,这在很大程度上可以由棕色生物膜形成来解释。研究结果揭示了海洋养鱼场中生物污损的动态,并为制定生物污损管理策略以减轻其影响提供了重要信息。
更新日期:2020-04-24
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