Abstract: Objective　To investigate the prevalence of Anisakis infections in coastal marine fishes and awareness of anisakiasis control knowledge among local residents in Yantai City, Shandong Province in 2021, so as to provide insights into formulation of anisakiasis control interventions. Methods　Marine fishes were purchased from Shunxin Port, Yantai City, Shandong Province in November 2021, and the presence of Anisakis was detected in different species of fishes and different fish sites. The correlations between body length and weight of marine fish and intensity of Anisakis infections were examined using Spearman’s rank correlation analysis, and the dietary habits and anisakiasis control knowledge were investigated using questionnaire surveys among local residents. Results　A total of 201 marine fishes belonging to 20 species were dissected, and Anisakis was detected in 77 marine fishes (38.31%) belonging to 11 species (55.00%), with a mean infection intensity of 45.04 parasites per fish (3 468/77). Spearman’s rank correlation analysis revealed that the body length (r = 0.74, P < 0.05) and weight (r = 0.79, P < 0.01) of the monkfish correlated positively with the intensity of Anisakis infections, and the body length (r = 0.68, P < 0.05) of the flatfish correlated positively with the intensity of Anisakis infections, while no correlations were examined between the body length or weight of other marine fishes and the intensity of Anisakis infections. Of all respondents, 53.38% men and 56.67% women did not know anisakiasis control knowledge at all, and there was a significant difference in the proportion of respondents using separate chopping boards for raw and cooked food from different villages ([χ2] = 17.89, P < 0.01), while there was an age⁃specific proportion of respondents with habitats of eating raw or semi⁃raw seafood ([χ2] = 28.27, P < 0.01). Conclusions　The prevalence and intensity of Anisakis infections were high in coastal marine fishes in Yantai City in 2021, and the awareness of anisakiasis control knowledge was low among local residents. Intensified health education pertaining to anisakiasis control knowledge is recommended to reduce the risk of Anisakis infections.

Key words: Anisakis, Anisakiasis, Marine fish, Questionnaire survey, Yantai City

摘要： 目的　了解2021年山东省烟台市近海海鱼异尖线虫感染率和当地居民异尖线虫病相关知识知晓情况，为制定异尖线虫病防控措施提供参考依据。方法　2021年11月，于山东省烟台市顺鑫港口购买海鱼，检测海鱼异尖线虫感染情况，并分析不同鱼种、不同部位异尖线虫感染率。采用Spearman秩相关分析海鱼体长和体质量与异尖线虫感染度间的相关性，对当地居民饮食习惯和异尖线虫病防治知识知晓率进行问卷调查。结果　共解剖海鱼20种201尾，其中11种77尾检出异尖线虫，鱼种异尖线虫感染检出率为55.00%（11/20）、海鱼总感染率为38.31%（77/201）；异尖线虫感染阳性海鱼中累计检出异尖线虫3 468条，平均感染度为45.04条/尾。Spearman秩相关结果显示，鮟鱇鱼体长（rs = 0.74，P < 0.05）和体质量（rs = 0.79，P < 0.01）与异尖线虫感染度呈正相关，比目鱼体长与感染度呈正相关（rs = 0.68，P < 0.05），其他种类海鱼体长、体质量与异尖线虫感染度均无相关性。问卷调查结果显示，53.38%男性和56.57%女性对异尖线虫病防治知识完全不了解，不同行政村居民生熟菜板不分比例差异有统计学意义（[χ2] = 17.89，P < 0.01），不同年龄组居民有生食或半生食海产品习惯者比例差异有统计学意义（[χ2] = 28.27，P < 0.01）。结论　2021年烟台市近海海域海鱼异尖线虫感染率、感染度均较高，当地居民异尖线虫病防治知识知晓率较低；应加大对居民异尖线虫病健康教育，降低异尖线虫感染风险。

关键词: 异尖线虫, 异尖线虫病, 海鱼, 问卷调查, 烟台市