Infection status of Anisakis larvae in the major economic marine products in the Yellow Sea and Bohai Sea from 2016 to 2020 / 中华地方病学杂志

Objective:To learn about the infection status of Anisakis larvae in the major economic marine products in the Yellow Sea and Bohai Sea, and provide baseline data for systematic monitoring of Anisakis and prevention and control of related diseases. Methods:From April 2016 to September 2020, the samples of marine products collected in the surrounding waters of 9 fishing sites in the Yellow Sea and Bohai Sea (Bohai Bay, the middle part of the Yellow Sea and Bohai Sea junction, the southern part of the Yellow Sea and Bohai Sea junction, the northern part of the Yellow Sea and the southern part of the Yellow Sea) in the coastal areas of Yantai City and Weihai City, Shandong Province were dissected and tested for worms. The infection and distribution of Anisakis larvae in different types of samples and different organs in the samples were compared, and the differences of the infection level of Anisakis larvae in marine fish among the surrounding waters of different fishing sites and different sampling sites in China were compared. At the same time, a survey on the awareness of health knowledge of anisakiasis was carried out among the residents near each fishing sites. Results:A total of 708 cases of 5 types of marine products were tested in the Yellow Sea and Bohai Sea, including 581 cases of marine fish, 22 cases of mollusks, 20 cases of echinodermata, 75 cases of crustaceans and 10 cases of shellfish. Anisakis larvae infection was detected only in marine fish (191 cases), and 4 723 Anisakis larvae were found. The infection rate was 32.87% (191/581) and the infection intensity was 24.73(4 723/191) larvae/case. They were mainly distributed in mesentery and intestinal wall (38.96%, 1 840/4 723), coelom (22.04%, 1 041/4 723) and gastric wall (17.95%, 848/4 723). The infection levels of Anisakis larvae in marine fish among the surrounding waters of different fishing sites were compared, the infection rate in the southern part of the Yellow Sea was the highest, and its infection intensity was significantly higher than that in the middle and southern part of the Yellow Sea and Bohai Sea junction ( P < 0.05). The infection levels of Anisakis larvae in marine fish among different sampling sites in China were compared, the infection rates of Zhoushan Port, the fish sold in Jinzhou, Yantai and Shantou were significantly higher than those in the Yellow Sea and Bohai Sea ( P < 0.05), and the infection rates of the fish sold in Dandong and Qingdao were significantly lower than those in the Yellow Sea and Bohai Sea ( P < 0.05). A total of 1 805 residents living near the Yellow Sea and Bohai Sea were investigated on the health knowledge of anisakiasis. Among them, 20.78% (375/1 805) residents had heard of anisakiasis, 15.73% (284/1 805) residents knew how to get it, 12.30% (222/1 805) residents knew the harm of anisakiasis to human body, and 16.68% (301/1 805) residents knew how to prevent it. Conclusions:The marine fish in the Yellow Sea and Bohai Sea are infected by the Anisakis larvae, and the level of infection is relatively high. In the future, we should strengthen the popularization of knowledge on prevention and control of anisakiasis.

Awareness and Usage Patterns of Housewives in Busan for Consuming Marine Products

We conducted this study to compare the awareness and attitude of Busan housewives about consuming marine products. The survey was conducted from April 10 to May 31, 2019 by using a questionnaire. The degree of preference of seafood was higher among individuals in their 40s than those in the other age groups. Among the women in their 30s, 40s, 50s and 70s, the reason for liking seafood was ‘taste’, and for those in their 60s it was ‘nutrition’. Overall the most common reason for disliking seafood was the ‘fishy smell (37.4%)’. Conception degree of nutritive value of seafood was higher among individuals in their 30s and 40s than that for those individuals in their 50s, 60s and 70s. As for the price of seafood, the wives over 40s thought seafood was more expensive than did those wives in their 30s. The younger the individuals were, the lower was the perceived degree of safety was 49.8% of the subjects reported that the main concern for purchase was ‘freshness’. The perceived degree of safety for imported seafood was better for the wives in their 60s and 70s than that for those wives in their 30s, 40s and 50s. The confidence level for local Korean seafood was higher for the wives in their 60s than that for the wives in their 50s. The degree of preference for seafood was moderate overall, except for Jellyfish. Age was positively correlated with conception for safety and dietary attitude (P<0.01), whereas age was negatively correlated with monthly food expenditure, nutrition knowledge and intake requirements (P<0.01). Preference for seafood was positively correlated with conception for safety (P<0.05), nutrition knowledge (P<0.05), dietary attitude (P<0.01), awareness for nutritive value (P<0.01) and intake requirements (P<0.01). Laws and regulations should be reinforced in order to promote eating more seafood and periodic research to determine the actual amount of consumed seafood and people's preferences should be conducted.

Determination of Trace Lead in Fresh Marine Products by Fluorescence Spectrophotometry / 环境与健康杂志

0.05). Conclusion The method is simple,accurate,reliable,less-reagent used and little inference of other metal ions. It is suitable for rapid determination of lead in the fresh marine products.