TY - JOUR
T1 - Environmental influence on abundance and infection patterns of snail intermediate hosts of liver and intestinal flukes in North and Central Vietnam
AU - Nguyen, PTX
AU - Dorny, P
AU - Van Hoang, H
AU - Losson, B
AU - Mignon, B
AU - Bui, DT
N1 - Closed;NPP
PY - 2024
Y1 - 2024
N2 - Liver and intestinal flukes (LIF) are important groups of foodborne zoonotic trematodes (FZTs) in Southeast Asia, including Vietnam. Their complex life cycles require specific freshwater snail species as the obligatory first intermediate hosts. In 2019, we conducted a longitudinal study in Yen Bai and Thanh Hoa provinces in North and Central Vietnam, respectively, to investigate the diversity of LIF and their infection prevalence in relation to snail host abundance and environmental factors. Using a combination of morphological and molecular identification techniques, we identified 10 LIF species infecting 11 snail host species. We observed significant seasonal variation in the mean abundance of several snail host species, with the majority of snails collected during the spring. We also detected seasonal changes in LIF species composition, with the highest species richness reported in the spring. Clonorchis sinensis and Fasciola gigantica, two medically important human liver flukes in Asia, were found only in the spring in Yen Bai. Our study revealed that not all snail host species have the same probability of becoming infected, and we recorded seasonal variations in the prevalence of LIF infection in different snail species in relation to water parameters.
AB - Liver and intestinal flukes (LIF) are important groups of foodborne zoonotic trematodes (FZTs) in Southeast Asia, including Vietnam. Their complex life cycles require specific freshwater snail species as the obligatory first intermediate hosts. In 2019, we conducted a longitudinal study in Yen Bai and Thanh Hoa provinces in North and Central Vietnam, respectively, to investigate the diversity of LIF and their infection prevalence in relation to snail host abundance and environmental factors. Using a combination of morphological and molecular identification techniques, we identified 10 LIF species infecting 11 snail host species. We observed significant seasonal variation in the mean abundance of several snail host species, with the majority of snails collected during the spring. We also detected seasonal changes in LIF species composition, with the highest species richness reported in the spring. Clonorchis sinensis and Fasciola gigantica, two medically important human liver flukes in Asia, were found only in the spring in Yen Bai. Our study revealed that not all snail host species have the same probability of becoming infected, and we recorded seasonal variations in the prevalence of LIF infection in different snail species in relation to water parameters.
KW - Freshwater snail
KW - Intestinal fluke
KW - Liver fluke
KW - Seasonal variation
KW - Vietnam
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=itm_wosliteitg&SrcAuth=WosAPI&KeyUT=WOS:001239396700002&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1007/s00436-024-08148-7
DO - 10.1007/s00436-024-08148-7
M3 - A1: Web of Science-article
C2 - 38358614
SN - 0932-0113
VL - 123
JO - Parasitology Research
JF - Parasitology Research
IS - 2
M1 - 134
ER -