Soil factors influencing the distribution of Oncomelania quadrasi, the intermediate host of Schistosoma japonicum, on Bohol Island, Philippines
Soil factors influencing the distribution of Oncomelania quadrasi, the intermediate host of Schistosoma japonicum, on Bohol Island, Philippines
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DOI：
10.1080/00034989859168
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发表时间：
1998-09-01
影响因子：
--
通讯作者：
Yasuraoka, K
中科院分区：
文献类型：
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作者：
Nihei, N;Kanazawa, T;Yasuraoka, K
对菲律宾保霍尔岛上的钉螺生存所必需的土壤条件进行了研究，以阐明限制钉螺分布的因素，并开发一种在实验室中繁殖大量钉螺的方法。对蜗牛栖息地及其周围的土壤样品进行了分析，并用于实验室的繁殖实验。利用不同母质的水稻土进行的实验表明，不同土样间的幼螺孵化数差异很大。最适宜繁殖的土壤pH值一般为5.6-7.9，有效CaO含量大于200 mg/100 g。这些土壤因素，加上阴凉和水分，决定了O。quadrasi在现场以及在实验室。确定了实验室繁殖的最佳条件。quadrasi和其他中间蜗牛宿主的研究应有助于对宿主进行详细研究，并有助于开发更好的方法来控制或根除血吸虫病和其他蜗牛传播的疾病。
Soil conditions essential to the survival of Oncomelania quadrasi on Bohol Island in the Philippines were examined to clarify the factors limiting distribution of the snail and to develop a method for breeding large numbers of the snail in the laboratory. Soil samples in and around snail habitats were analysed and used for breeding experiments in the laboratory. Experiments using paddy soil derived from different parent materials revealed that the numbers of juvenile snails hatched varied widely between several soil samples. The best soils for reproduction generally had a pH of 5.6-7.9 and > 200 mg of available CaO/100 g. These soil factors, in addition to shade and moisture, determine the optimum conditions for the breeding of O. quadrasi in the field as well as in the laboratory. The determination of the optimum conditions for laboratory breeding of O. quadrasi and other intermediate snail hosts should facilitate detailed study of the hosts and the development of better methods to control or eradicate schistosomiasis and other snail-transmitted diseases.