福建省尤溪县东南部并殖吸虫中间宿主种群及其感染情况

doi:10.12140/j.issn.1000-7423.2021.05.022

中国寄生虫学与寄生虫病杂志 ›› 2021, Vol. 39 ›› Issue (5): 646-651.doi: 10.12140/j.issn.1000-7423.2021.05.022

福建省尤溪县东南部并殖吸虫中间宿主种群及其感染情况

罗鋆¹(), 陈及清², 江典伟³^,^*(), 周培聪⁴, 蔡茂荣¹, 程由注³

1 福建省漳州市疾病预防控制中心,漳州 363000
2 福建省建宁县疾病预防控制中心,建宁 354500
3 福建省疾病预防控制中心,福州 350001
4 福建省尤溪县疾病预防控制中心,尤溪 365100

收稿日期:2021-03-31 修回日期:2021-05-21 出版日期:2021-10-30 发布日期:2021-11-10
通讯作者: 江典伟
作者简介:罗鋆（1989-）,男,本科,主管医师,从事寄生虫病防治与宿主动物研究。E-mail： 25532678@qq.com
基金资助:
国家自然科学基金(3206130239);福建省漳州市自然科学基金(ZZ2017J09);福建省漳州市重大科技项目(ZZ2017ZD05)

Intermediate host population and infection status of Paragonimus in southeastern Youxi County, Fujian Province

LUO Jun¹(), CHEN Ji-qing², JIANG Dian-wei³^,^*(), ZHOU Pei-cong⁴, CAI Mao-rong¹, CHENG You-zhu³

1 Zhangzhou Center for Disease Control and Prevention, Zhangzhou 363000, China
2 Jianning Center for Disease Control and Prevention, Jianning 354500, China
3 Fujian Center for Disease Control and Prevention, Fuzhou 350001, China
4 Youxi Center for Disease Control and Prevention, Youxi 365100, China

Received:2021-03-31 Revised:2021-05-21 Online:2021-10-30 Published:2021-11-10
Contact: JIANG Dian-wei
Supported by:
National Natural Science Foundation(3206130239);Zhangzhou Natural Science Foundation of Fujian(ZZ2017J09);Zhangzhou Key Project of Science and Technology Plan(ZZ2017ZD05)

摘要/Abstract

摘要：

2015—2020年,从福建省尤溪县东南部华兰溪流域溪尾乡的埔宁村、溪尾村和汤川乡的赤墓村、珠建村等4个村,每村选1条水量较少、1条水量较多的水沟作为调查点,采集淡水螺、蟹,对螺和蟹进行形态学分类,分离螺类并殖吸虫尾蚴和蟹类囊蚴并进行鉴定。用从蟹类分离的卫氏并殖吸虫和斯氏并殖吸虫囊蚴各80条分别经口感染幼犬1只,感染后60 d起粪检查找虫卵,分别于感染后80、100 d剖杀幼犬,收集成虫,对成虫进行形态学分类。共查获淡水螺类3种,共7 405只。其中,卫氏并殖吸虫第一中间宿主螺1种,为放逸短沟蜷;斯氏并殖吸虫第一中间宿主螺2种,分别为待定种拟钉螺和待定种洱海螺。埔宁村（拟钉螺）、溪尾村（拟钉螺）和赤墓村（洱海螺）等3个村的螺类斯氏并殖吸虫尾蚴的感染率分别0.39%（6/1 546）、0.17%（2/1 179）和0.26%（5/1 898）;珠建村的放逸短沟蜷检出卫氏并殖吸虫尾蚴,感染率为0.11%（1/917）。共查获蟹类5种319只,均为并殖吸虫第二中间宿主,分别为福建华溪蟹、永安博特溪蟹、尤溪博特溪蟹、福建南海溪蟹和待定种华南溪蟹。溪蟹并殖吸虫囊蚴总感染率为25.71%（82/319）,平均感染度为7.34个囊蚴/蟹,感染指数为3.09。其中埔宁村的尤溪博特溪蟹、福建华溪蟹的斯氏并殖吸虫囊蚴感染率为41.89%（31/74）：溪尾村的待定种华南溪蟹、福建华溪蟹的斯氏并殖吸虫囊蚴感染率为22.67%（17/75）;赤墓村的福建华溪蟹、永安博特溪蟹、福建南海溪蟹的斯氏并殖吸虫囊蚴感染率为30.0%（21/70）。珠建村的福建华溪蟹、永安博特溪蟹、福建南海溪蟹的卫氏并殖吸虫囊蚴感染率为13.00%（13/100）。囊蚴感染犬后分别获得卫氏并殖吸虫和斯氏并殖吸虫成虫12、10条。福建省尤溪县东南部存在多种并殖吸虫第一中间宿主螺类和第二中间宿主蟹类,为中度感染风险的并殖吸虫病自然疫源地。

关键词: 并殖吸虫, 中间宿主, 螺, 蟹, 感染率, 尤溪县

Abstract:

From 2015 to 2020, four villages in southeast Youxi County, Fujian Province (Puning Village and Xiwei Village in Xiwei Town, Chimu Village and Zhujian Village in Tangchuan Town) were selected as survey sites. Freshwater snails and crabs were collected in one shallow and one deep gully from each village and were identified by morphological characteristic. Paragonimus cercariae from snails and cysticerci from crabs were isolated and identified. Two puppies were fed with 80 metacercariae of P. westermani or P. skrjabini isolated from crabs. The eggs were examined in feces starting 60 days after infection, and the puppies were dissected to collect adult worms at 80 days and 100 days after infection. The adult worms were identified by morphological characteristics. We collected 7 405 freshwater snails from three species: Semisulcospira liberlina, the first intermediate host of P. westermani, and undefined Triculini and Erhaia, the first intermediate host of P. skriabini. The infection rates of P. skrjabini cercariae in Puning Village (Triculini), Xiwei Village (Triculini) and Chimu Village (Erhaia) were 0.39% (6/1 546), 0.17% (2/1 179) and 0.26% (5/1 898), respectively. The infection rate of P. westermani cercariae in S. liberlina in Zhujian Village was 0.11% (1/917). A total of 319 crabs from five species （S. fukienense, B. yonganense, B. youxiense, N. fujianense, and undefined Huananpotamon） were collected. All species were the second intermediate hosts of Paragonimus. The total infection rate of freshwater crabs was 25.71% (82/319). The average infection intensity was 7.34 metacercariae per crab, and the infection index was 3.09. The infection rate of P. skrjabini metacercariae in B. youxiense and S. fukienense in Puning Village was 41.89% (31/74). The infection rate of P. skrjabini metacercariae in undefined Huananpotamon and S. fukienense in Xiwei Village was 22.67% (17/75). The infection rate of P. skrjabini metacercariae in S. fukienense, B. yonganense, and N. fujianense in Chimu Village was 30.0% (21/70). The infection rate of P. westermani metacercariae in S. fukienense, B. yonganense, and N. fujianense in Zhujian Village was 13.00% (13/100). A total of 12 and 10 adult worms of P. westermani and P. skrjabini, respectively, were collected from puppies infected with metacercariae, respectively. Many species of Paragonimus first intermediate host snails and Paragonimus second intermediate host crabs were found in the southeast Youxi County, Fujian Province, which is a moderate-risk area for Paragonimus infection.

Key words: Paragonimus, Intermediate host, Snail, Crab, Infection rate, Youxi County

中图分类号:

R532.22

罗鋆, 陈及清, 江典伟, 周培聪, 蔡茂荣, 程由注. 福建省尤溪县东南部并殖吸虫中间宿主种群及其感染情况[J]. 中国寄生虫学与寄生虫病杂志, 2021, 39(5): 646-651.

LUO Jun, CHEN Ji-qing, JIANG Dian-wei, ZHOU Pei-cong, CAI Mao-rong, CHENG You-zhu. Intermediate host population and infection status of Paragonimus in southeastern Youxi County, Fujian Province[J]. Chinese Journal of Parasitology and Parasitic Diseases, 2021, 39(5): 646-651.

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调查点	孳生地水环境类型	第一中间宿主螺类		第二中间宿主蟹类
调查点	孳生地水环境类型	螺种	感染率/%	蟹种	感染率/%	平均囊蚴数/ 只·蟹^-1	每克蟹囊蚴数/只·（g蟹）^-1
埔宁A	山垅田灌溉沟水源坑沟	待定种拟钉螺	0.39（6/1 546）	尤溪博特溪蟹	64.58（31/48）	6.45	3.98
埔宁B	华兰溪支流溪沟	放逸短沟蜷	0（0/617）	福建华溪蟹	0（0/26）
溪尾A	山坳梯田源头小沟	待定种拟钉螺	0.17（2/1 179）	待定种华南溪蟹	38.71（12/31）	6.33	2.14
				福建华溪蟹	25.00（5/20）	10.80	0.76
溪尾B	华兰溪支流溪沟	放逸短沟蜷	0（0/526）	福建华溪蟹	0（0/24）
赤墓A	山坳梯田灌溉沟源头渗水沟	待定种洱海螺	0.26（5/1 898）	永安博特溪蟹	40.17（9/23）	5.56	0.94
				福建南海溪蟹	44.44（12/27）	5.92	0.73
赤墓B	华兰溪支流溪沟	放逸短沟蜷	0（0/722）	福建华溪蟹	0（0/20）
珠建A	山涧坑沟	放逸短沟蜷	未检测	福建华溪蟹	0（0/25）
				福建南海溪蟹	0（0/20）
				永安博特溪蟹	0（0/21）
珠建B	华兰溪支流溪沟	放逸短沟蜷	0.11（1/917）	福建华溪蟹	38.24（13/34）	11.62	2.52

福建省尤溪县东南部并殖吸虫中间宿主种群及其感染情况

Intermediate host population and infection status of Paragonimus in southeastern Youxi County, Fujian Province

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