Population ecology of medical shellfish and the infection rate of Angiostrongylus cantonensis in Longhai City,Fujian Province, China
10.3969/cjz.j.issn.1002-2694.2014.08.010
- VernacularTitle:福建省龙海市广州管圆线虫贝类宿主种群生态及感染率调查研究
- Author:
Guohua LIN
;
Mingsong HUANG
;
Youzhu CHENG
;
Ruidan ZHENG
;
Shaohong CHEN
;
Cuilan YAN
;
Yanyan FANG
;
Shaoxing LIN
;
Yaoxiong ZHOU
- Publication Type:Journal Article
- Keywords:
medical shellfish;
populations;
ecological environment;
Angiostrongylus cantonensis;
infection rate;
detec-tion method;
new host
- From:
Chinese Journal of Zoonoses
2014;(8):821-827
- CountryChina
- Language:Chinese
-
Abstract:
The aim of the study was to investigate the population ecology of medical shellfish and the infection of An-giostrongylus cantonensis in Longhai ,Fujian Province ,China .Aquatic and terrestrial shellfish were collected in survey points according to different types of breeding grounds .Then ,lung-microscopy method was involved in the detection of the lung tis-sue in Ampullaria gigas .Other shellfishes were mashed to detect the third-stage larvae of Angiostrongylus cantonensis .Hom-ogenization and lung microscopy were compared in the detection of the larvae of A .cantonensis in Achatina snails .Factors re-lated to the environment and influence of shellfish hosts were also included .Results showed that 8 species of molluscans were found ,including Pila gigas ,Bellamya aeruginosa ,Bellamya lithophaga ,Melanoides tuberculata ,Achatina fulica ,Vag-inulus alte ,Philomycus bilineatus ,and Bradybaenasimilaris with 1 673 specimens in 27 survey points from 9 townships .The infectionratewas19.78% inaverage.TheinfectionrateinV.altewas56.63% (47/83);theinfectionratesforA.fulicaand P .gigas were 39 .32% (92/234) and 27 .14% (130/234) ,respectively .The infection rate of each survey point was closely re-lated to the distances from the residents living area .Morever ,A .cantonensis larvae were detected in M .tuberculata .Lung mi-croscopy and homogenization method detection rate was 87 .1%and 100 .0% ,respectively .The difference was statistically sig-nificant .In conclusion ,V .alte ,A . fulica and P .gigas were A . cantonensist infection dominant population . The infection rate was closely related to micro-ecological environment for all kinds of shellfish .M .tuberculata was the new host of A .can-tonensis .Lung microscopy method should not be used in the qualitative screening detection of A . f ulica infected with A .can-tonensist .
