海南大学学报（自然科学版中英文）2026，Vol.44Issue(2)：149-160,12.DOI:10.65658/j.hndk.2025033101
卵形鲳鲹刺激隐核虫病继发细菌感染调查与分析
Investigation and analysis of secondary bacterial infections in Trachinotus ovatus infected with Cryptocaryon irritans
摘要
Abstract
In order to elucidate the relationship between"Cryptocaryoniasis"caused by Cryptocaryon irritans infection and secondary bacterial infections in Trachinotus ovatus,in the report,the continuous sampling of the naturally infected fish in offshore deep-sea cage farming systems and the laboratory-reared individuals were conducted,the artificial infection experiments with Cryptocaryon irritans were in order to elucidate the relationship between"Cryptocaryoniasis"caused by Cryptocaryon irritans infection and secondary bacterial infections in Trachinotus ovatus,in the report,the continuous sampling of the naturally infected fish in offshore deep-sea cage farming systems and the laboratory-reared individuals were conducted,the artificial infection experiments with Cryptocaryon irritans were performed,and the correlations between the infection intensity of the parasite,secondary bacterial infection rates,and the hepatic bacterial loads were investigated,and the dominant bacteria in the livers of diseased fish was identified.The results demonstrated that the secondary bacterial infection rates and the hepatic bacterial loads significantly increased with the increase of the severity of Cryptocaryon irritans infection;the peak values of the secondary bacterial infection rates and the hepatic bacterial loads were observed at 168 h post-infection;among 93 dominant bacterial strains isolated from the liver tissues of the farmed Trachinotus ovatus in the natural marine environment,Photobacterium damselae and Vibrio harveyi were identified as the predominant pathogens.This study provides a theoretical basis for the prevention and treatment of Cryptocaryon irritans infection and its associated secondary bacterial infections.关键词
刺激隐核虫/卵形鲳鲹/继发细菌感染Key words
Cryptocaryon irritans/Trachinotus ovatus/secondary bacterial infection分类
农业科技引用本文复制引用
梁乃祺,朱力,蔡岩,林新磊,张伟浩,周永灿,王世锋..卵形鲳鲹刺激隐核虫病继发细菌感染调查与分析[J].海南大学学报（自然科学版中英文）,2026,44(2):149-160,12.基金项目
本文得到国家自然科学基金项目(32060031)、海南省科技人才创新项目(KJRC2023B22)和海南省农业农村厅石斑鱼产业体系项目(HNARS-03-G03)的支持. This work was supported by the National Natural Science Foundation of China(32060031)and Hainan Provincial Innovation Project for Scientific and Technological Talents(KJRC2023B22),and Grouper Industrial System Project of the Department of Agriculture and Rural Affairs of Hainan Province(HNARS-03-G03). （32060031）
