First detection of Angiostronylus cantonensis infection in Pomacea canaliculata in Ma’anshan City

doi:10.20199/j.issn.1672-2302.2024.06.008

Abstract

Abstract:

Objective To investigate the distribution of Pomacea canaliculata and its status infected with Angiostronylus cantonensis in Ma’anshan City for evidences to plan the local prevention and control measures in scientific basis. Methods Between September and November 2023, we selected five townships (sub-districts) from each of the six counties (districts) in Ma’anshan area based on the geographical locations, and conducted field investigation to identify the presence of areas with Pomacea canaliculata. The snails were then collected from the breeding sites using netting methods, and their infection status was examined through microscopical inspection. The samples with suspected larvae at stage Ⅲ were subjected to molecular biological identification of Angiostrongylus cantonensis. Results In total, 30 townships (sub-districts) were investigated, in which Pomacea canaliculata were found in 12 townships (sub-districts), distributed in Huashan District, Yushan District, Dangtu County, Hexian County and Hanshan County. Nineteen breeding sites of Pomacea canaliculata were found in various environments including ditches, ponds, rivers, and lakes. A total of 452 Pomacea canaliculata were collected, in which 9 pieces of Angiostrongylus cantonensis larvae were detected from the samples obtained in Jinzitang Park located in Yangjiashan Community, Jinjiazhuang Sub-district, Huashan District (1 larva) and in a freshwater crab pond located in Xihu Community in Huyang Town, Dangtu County (8 larvae). Morphological observation and molecular biological identification confirmed that the larvae were Angiostrongylus cantonensis at stage Ⅲ. Conclusion Pomacea canaliculata were found to be present in Ma’anshan area, including Huashan District, Yushan District, Dangtu County, Hexian County and Hanshan County, and the snails infected with Angiostrongylus cantonensis were detected in the samples from Huashan District and Dangty County. This is the first discovery of the Pomacea canaliculata infected with Angiostronylus cantonensis in Ma’anshan area.

Key words: Pomacea canaliculata, Angiostronylus cantonensis, Infection status, Ma’anshan City

CLC Number:

R532.19

FAN Zehan, ZHAN Ti, SUN Chengsong, XIANG Kexia, JIANG Xiaoyu, WANG Weichun, DUAN Yongmei, ZHU Yingfu. First detection of Angiostronylus cantonensis infection in Pomacea canaliculata in Ma’anshan City[J]. Journal of Tropical Diseases and Parasitology, 2024, 22(6): 364-366.

Figures/Tables 3

References 23

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县（区）	发现福寿螺分布的乡镇（街道）数（个）	福寿螺分布环境类型（条/个）					捕获福寿螺数（只）
县（区）	发现福寿螺分布的乡镇（街道）数（个）	沟渠	水塘	湖泊	河流	合计	捕获福寿螺数（只）
花山区	3	0	2	1	0	3	59
雨山区	2	0	0	0	2	2	32
博望区	0	0	0	0	0	0	0
当涂县	4	7	2	0	0	9	228
和县	2	0	3	0	0	3	75
含山县	1	1	1	0	0	2	58
合计	12	8	8	1	2	19	452