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      Trematodes obtained from the thiarid freshwater snail Melanoides tuberculata (Müller, 1774) as vector of human infections in Thailand

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      Zoosystematics and Evolution

      Pensoft Publishers

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          Abstract

          Larval stages of trematodes obtained from the freshwater snail Melanoides tuberculata (Cerithioidea, Thiaridae) as intermediate host were studied by using cercarial emergence and crushing snails. Between December 2004 and September 2009 snails from one hundred twenty locations in Thailand were collected every two months for one year at each sampling site. Counts per unit of time method was used in this study, and the samples of snails were collected every 10 minutes per sampling by five collectors. The cercarial stages were examined using shedding and crushing methods. The infection rate was found to be 18.79%, i.e. 6,019 animals infected in a total of 32,026. Nine different types in eighteen species of cercariae were categorized, viz. are (1) Parapleurophocercous cercariae: Haplorchis pumilio, Haplorchis taichui, and Stictodora tridactyla; (2) Pleurophocercous cercariae: Centrocestus formosanus; (3) Xiphidiocercariae: Acanthatrium hitaense, Loxogenoides bicolor, and Haematoloechus similis; (4) Megalurous cercariae: Cloacitrema philippinum and Philophthalmus sp.; (5) Furcocercous cercariae: Cardicola alseae, Alaria mustelae, Transversotrema laruei, Apatemon gracilis, and Mesostephanus appendiculatus; (6) Echinostome cercariae: Echinochasmus pelecani; (7) Amphistome cercariae: Gastrothylax crumenifer; (8) Renicolid cercariae: Cercaria caribbea LXVIII; and, (9) Cotylomicrocercous cercariae: Podocotyle (Podocotyle) lepomis.

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          Most cited references 26

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          Control of neglected tropical diseases.

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            Food-borne trematodiases in Southeast Asia epidemiology, pathology, clinical manifestation and control.

            The food-borne trematodiases are an important group of neglected tropical diseases (NTDs). Over 40 million people are infected with food-borne trematodes and 750 million (>10% of the world's population) are at risk of these NTDs. Here, we review the life cycles, epidemiology, clinical manifestations, pathology and pathogenesis, diagnosis, treatment, and prevention and control of the major food-borne trematodiases in Southeast Asia. We focus particularly on opisthorchiasis caused by Opisthorchis viverrini and clonorchiasis caused by Clonorchis sinensis, which people contract by ingestion of metacercariae in flesh of raw or undercooked freshwater fishes, on fascioliasis caused by Fasciola species, where infection arises from ingestion of metacercariae on water plants such as watercress, and on Paragonimus species, the lung flukes, which use freshwater crabs and other crustaceans as intermediate hosts. We also include information on the intestinal flukes Fasciolopsis buski, the echinostomes and the so-called 'minute intestinal flukes' of the family Heterophyidae. Ecological information, placing emphasis on reservoir hosts, intermediate snail hosts and secondary hosts where applicable, is also reviewed and research needs are highlighted.
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              Global diversity of gastropods (Gastropoda; Mollusca) in freshwater

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                Author and article information

                Journal
                Zoosystematics and Evolution
                ZSE
                Pensoft Publishers
                1860-0743
                1435-1935
                March 28 2014
                March 28 2014
                : 90
                : 1
                : 57-86
                Article
                10.3897/zse.90.7306
                © 2014
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