网箱养殖卵形鲳鲹鱼体寄生虫初步调查

Study on the Parasites fromTrachinotus ovatus in Marine Cage Culture

【目的】为给卵形鲳鲹(Trachinotus ovatus)健康养殖提供理论依据和技术支持,调查其养殖过程中鱼体寄生虫种类。【方法】以防城港和北海网箱养殖卵形鲳鲹为对象,通过现场调查、肉眼检查、镜检观察等方法对卵形鲳鲹体表、鳃、内脏等组织进行寄生虫检查并分类鉴定。【结果】共检出5种寄生虫:刺激隐核虫Cryptocaryon irritans、拟德式吸虫Pardeontacylix McIntosh、本尼登虫Benedenia Diesing、淀粉卵甲藻Amyloodinium ocellatum和车轮虫Trichodibna Ehren berg,感染率分别为27.8%,8.1%,3.3%,16.4%,18%。【结论】寄生虫在卵形鲳鲹的养殖过程中存在,且种类繁多,已成为影响卵形鲳鲹健康养殖的主要因素之一。

【Objective】To investigate the parasite species fromTrachinotus ovatus cultured in Fangchenggang and Beihai,which can provide theoretical foundation and technical support for healthy aquaculture of Trachinotus ovatus.【Methods】Using field survey,visual inspection and microscopic examination to catalogued and identified the parasites from the surface gill and viscera of Trachinotus ovatus.【Results】5species of parasite,Cryptocaryon irritans,Pardeontacylix McIntosh,Trichodibna Ehren berg,Benedenia Diesing and Amyloodinium ocellatum were identified fromTrachinotus ovatus.The infection rate were 27.8%,8.1%,3.3%,16.4%,and 18%,respectively.【Conclusion】The species of parasite are various in the process of Trachinotus ovatus cultivation.Parasitic disease has become the main hindrance in Trachinotus ovatus' s healthy breeding.