Journal
ACTA TROPICA
Volume 140, Issue -, Pages 105-117Publisher
ELSEVIER
DOI: 10.1016/j.actatropica.2014.08.005
Keywords
Gastropoda; Intermediate hosts; Clonorchiasis; Schistosomiasis; Food-borne trematode
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Funding
- DBL-Centre for Health Research and Development, Department of Veterinary Disease Biology, University of Copenhagen
- project Fishborne Zoonotic Parasites in Vietnam (FIBOZOPA) [91140/file no. 104. Dan.L.8.f]
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Freshwater snails have received much attention for their role as intermediate hosts for trematodes causing disease in people and animals such as schistosomiasis and various food-borne trematodes. While effective medical treatment exists for some of these diseases there is need for preventive measures to reduce transmission, e.g. control of intermediate hosts because transmission patterns are often complicated due to presence of reservoir final hosts. In order to implement control measures against the intermediate host snails with minimal impact on the freshwater ecosystems and their biodiversity, a profound knowledge on transmission patterns of the trematodes is required and this is partly related to distribution, habitat preferences, and seasonal variation in density of the intermediate host species. Identification of snail species can be problematic on the basis of morphological and anatomical characters alone as some species show morphological plasticity and similarly morphological differentiation of cercariae found in snails may be difficult and this could lead to biased perceptions of intermediate host spectra and transmission patterns. In this paper, we give an overview of the snail families and their medical and veterinary importance in Asia but with main focus on Vietnam. (C) 2014 Elsevier B.V. All rights reserved.
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