SEASONAL OCCURRENCE OF SIMULIUM-OCHRACEUM, THE PRINCIPAL VECTOR OF ONCHOCERCA-VOLVULUS IN THE SOUTHEASTERN ENDEMIC AREA OF GUATEMALA
SEASONAL OCCURRENCE OF SIMULIUM-OCHRACEUM, THE PRINCIPAL VECTOR OF ONCHOCERCA-VOLVULUS IN THE SOUTHEASTERN ENDEMIC AREA OF GUATEMALA
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DOI：
10.4269/ajtmh.1981.30.1121
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发表时间：
1981-01-01
影响因子：
3.3
通讯作者：
TAKAOKA, H
中科院分区：
文献类型：
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作者：
TAKAOKA, H
调查了该虫的季节性发生情况。ochraceum是危地马拉O. 1978年8月至1980年1月，在危地马拉埃斯昆特拉流行[人类]盘尾丝虫病的两条主要河流上游，在旱季后期S.赭色幼虫仅限于中等海拔的永久溪流中。在雨季，preimaginal网站延伸到上游的许多小间歇性河流，由于部分地下流动。S.在整个雨季期间，在这些临时溪流中均发现有赭藓。这在旱季的前几个月（10月至12月）最为明显。12月）只要这些小溪继续流动两河上游的成蚊种群沿着出现高峰，从10月至这代表了一种不同于其他地方的模式，在其他地方，S。赭色主要出现在较大的常年流动的河流。未来的杀幼虫控制计划的影响，对盘尾丝虫病流行区的危地马拉进行了讨论。
Investigations of the seasonal occurrence of S. ochraceum, the principal vector of the Guatemalan strain of O. volvulus, were made from Aug. 1978 to Jan. 1980 in the upper reaches of the 2 main rivers of endemic [human] onchocerciasis in Escuintla, Guatemala. In the late dry season S. ochraceum larvae were restricted to permanent streams at intermediate altitudes. During the rainy season, the preimaginal sites extended to the upper reaches of the numerous small intermittent streams due to partial subterranean flows. Seasonal occurrence of S. ochraceum in these temporary streams was observed throughout the wet season. This was most pronounced during the early months of the dry season (Oct.-Dec.) as long as these streamlets continued to flow. The adult population along the headwaters of these 2 rivers showed a high peak from Oct.-Dec. This represented a pattern distinct from that of other places where the preimaginal sites of S. ochraceum occurred mostly in larger perennially running streams. The implications for future larvicidal control program on the onchocerciasis-endemic region of Guatemala are discussed.