Analysis of changes in the habitat area of Oncomelania hupensis nosophora, the intermediate snail host of Schistosoma japonicum, in the Obitsu River basin in Chiba Prefecture, Japan, using geographic information systems.

Naoko Nihei, Kensuke Taira, Mayuko Yonejima, Osamu Komagata, Hiroyuki Suzuki, Kan-Ichiro Mochizuki, Tomoki Nakaya

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Article in The Journal of veterinary medical science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Naoko NiheiLaboratory of Parasitology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan.

Kensuke TairaLaboratory of Parasitology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan.

Mayuko YonejimaFaculty of Humanities and Social Sciences, Kumamoto University, Kumamoto, Japan.

Osamu KomagataDepartment of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan.

Hiroyuki SuzukiGraduate School of Pharmaceutical Sciences (Radioisotope Research Center), Chiba University, Chiba, Japan.

Kan-Ichiro MochizukiSocial Value Creation HQ Innovative Business Promotion Department, PASCO Corporation, Tokyo, Japan.

Tomoki NakayaGraduate School of Environmental Studies, Tohoku University, Miyagi, Japan.

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No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human schistosomiasis is a serious parasitic disease caused by infection with Schistosoma japonicum. In order to establish monitoring sites in the S. japonicum endemic area in the Obitsu River basin in Chiba Prefecture, Japan, we investigated the habitat of the intermediate snail host, Oncomelania hupensis nosophora using geographic information systems (GIS). A series of thematic maps of soil types, land-use, and past wetlands were compared to the distributions of patients and O. h. nosophora habitats to identify environmental conditions associated with high risk of the disease. In addition, we divided the period from the 1600s to the present into four sub-periods to estimate how the habitat of O. h. nosophora has changed. Our study identified the present risk areas in the Obitsu River basin that should be monitored consecutively, taking into account future global environmental changes that may have the potential to promote re-emergence of the disease.

Indexed as

EcosystemSchistosoma japonicumSchistosomiasis japonicaSnailsAnimalsGeographic Information SystemsHumansJapanRiversSoilWetlandsSoilenvironmental conditions of habitathistorical habitat predictionObitsu River basinOncomelania hupensis nosophoraSchistosoma japonicum

Identifiers

PMID40090728

DOI10.1292/jvms.24-0515

PMCPMC12150882

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