Genetic diversity and population structure of the helminths intermediate host Anentome helena(von dem Busch,1847)in northern Thailand  

作　　者：Nithinan Chomchoei Chalobol Wongsawad Preeyaporn Butboonchoo Nattawadee Nantarat 

机构地区：[1]Department of Biology,Faculty of Science,Chiang Mai University,Chiang Mai 50200,Thailand [2]Applied Parasitology Research Laboratory,Department of Biology,Faculty of Science,Chiang Mai University,Chiang Mai 50200,Thailand [3]Environmental Science Research Center(ESRC),Chiang Mai University,Chiang Mai,50200,Thailand

出　　处：《Asian Pacific Journal of Tropical Medicine》2024年第12期536-544,共9页亚太热带医药杂志(英文版)

基　　金：financially supported by the Human Resource Development in Science Project(Science Achievement Scholarship of Thailand,SAST);partially supported by Chiang Mai University.

摘　　要：Objective:To investigate the genetic diversity and population structure of the helminth intermediate host,Anentome(A.)helena,populations from northern Thailand and reveal the effect of parasitic infection on snail host populations.Methods:A.helena was collected throughout river drainages from northern Thailand and investigated for larval trematode infection.Seventy-three A.helena specimens were used to examine and re-construct the molecular phylogenetics(neighbour-joining,maximum likelihood,and Bayesian inference methods),genetic diversity,and population structure based on the concatenated datasets of COI and 16S rRNA(1178 bp).Results:The infection of zoogonid cercariae,heterophyid metacercariae,and echinostome metacercariae in the snail was found from 2 localities,including Mae Sa and Mae Pu Kha populations,with a total prevalence of 6.7%and 16.3%,respectively.The phylogenetic tree and haplotype network revealed three main clades and three haplogroups for each region(COI and 16S rRNA).High levels of genetic diversity in terms of haplotype diversity were found in parasitic infected populations.Conclusions:This is the first time that Echinostoma mekongi has been discovered from A.helena in northern Thailand.The results also showed that parasitic infection can affect the population genetic structure of the snail intermediate host,A.helena.Moreover,habitat and historical demographic changes could be other important factors that can affect the degree of population genetic structure in A.helena.Understanding the population structure of intermediate host species can inform parasite transmission dynamics and is useful for the creation of effective public health management strategies.

关 键 词：CERCARIAE METACERCARIAE PHYLOGENY PARASITE Host Freshwater snail 

分 类 号：R73[医药卫生—肿瘤]