Investigation on the infection of Angiostrongylus cantonensis in snails in public greenbelts of Fuzhou
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Fujian Provincial Center for Disease Control and Prevention; Fujian Provincial Key Laboratory for Zoonoses Research, Fujian Fuzhou 350012, China

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R155

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    Abstract:

    Objective To investigate the infection of Angiostrongylus cantonensis in snails in public greenbelts of Fuzhou, so as to provide the scientific basis for the formulation of the angiostrongyliasis control.Methods A.fulica and P.canaliculata were randomly collected from a public green land in public parks,residential areas, urban roads and other public green areas during May to November of 2021 and 2023. The A. cantonensis stage Ⅲ larvae were collected by homogenizing method and identified by morphology. A. cantonensis rRNA gene was amplified by PCR and the sequence was compared by BLAST analysis.Results A total of 213 A. fulica were collected, 20.2% (43/213) A. fulica were infected with A. cantonensis. The average infection degree was 235.8(10 139/43)/ snail. A total of 507 P.canaliculata were collected, 16.0% (81/507) P.canaliculata were infected with A. cantonensis. The average infection degree was 43.2(3 501/81)/ snail. The BLAST results showed that the consistency between the PCR product sequencing results and the reference sequences of A. cantonensis in the GenBank (Accession number: AB684364.1) was 98.2%.The median body weight of 213 A. fulica was 36g, and the infection rates of A. fulica with body weight below 36g and above were 11.2% (12/107) and 29.2% (31/106),and there was significant difference in infection rate (χ2=10.74, P<0.05) .The infection rate of P.canaliculata with larger body mass is higher than that of larger body mass with smaller body mass, and there was a significant difference among snails with different body masses(χ2=181.03, P<0.05).Conclusion The results suggested that there are A.fulica and P.canaliculata infected with A. cantonensis in public greenbelts of Fuzhou city, This will be provide a infection risk upon eating the raw or partially cooked or touching the objects contaminated with A.fulica secretions.

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ZHENG Dan, CAI Wuwei, JIANG Dianwei, LIN Chenxin, XIE Hangguo, CHEN Zhuyun, GAO Lanlin. Investigation on the infection of Angiostrongylus cantonensis in snails in public greenbelts of Fuzhou[J].中国食品卫生杂志,2024,36(10):1161-1165.

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  • Received:April 18,2024
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  • Online: February 07,2025
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