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首页> 外文期刊>Journal of Parasitology >SEASONAL PREVALENCE OF THIRD-STAGE LARVAE OF DIROFILARIA IMMITIS IN MOSQUITOES FROM FLORIDA AND LOUISIANA
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SEASONAL PREVALENCE OF THIRD-STAGE LARVAE OF DIROFILARIA IMMITIS IN MOSQUITOES FROM FLORIDA AND LOUISIANA

机译：佛罗里达州和路易斯安那州蚊子中双丝虫的第三阶段幼虫的季节性流行

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摘要

Heads of 109,597 mosquitoes collected during 1996 and 1997 from Gainesville, Florida (1996, n = 39,131; 1997, n = 34,209), Bartow, Florida (1996, n = 12,000; 1997, n = 12,000), and Baton Rouge, Louisiana (1996, n = 12,257) were tested by a polymerase chain reaction and Southern hybridization-based test for the presence of third-stage larvae of the canine heartworm Dirofilaria immitis. Mosquito heads were pooled (1–200 heads) by month, locality, and species for testing. The test used was species specific for D. immitis and was capable of detecting DNA from a single larva in a pool of 200 mosquito heads. Specificity for the third larval stage was achieved by probing only mosquito heads. One or more D. immitis-infected mosquito heads were detected in each month of the year from Bartow in both 1996 and 1997. No infected mosquito heads were detected from Gainesville or Baton Rouge in December, January, February, or March. These results are in general agreement with previous sentinel dog and model prediction studies that showed heartworm transmission in the warm temperate Gulf coast region of the United States to be seasonal rather than continuous as previously believed.
机译：在1996年至1997年期间，从佛罗里达州盖恩斯维尔（1996年，n = 39,131； 1997年，n = 34,209），佛罗里达州巴托（1996，n = 12,000； 1997，n = 12,000）和路易斯安那州巴吞鲁日（Baton Rouge）收集了109,597头蚊子通过聚合酶链反应和基于Southern杂交的方法检测了犬心丝虫Dirofilaria炎的第三阶段幼虫的存在（1996年，n = 12,257）。按月份，地点和物种将蚊子的头（1–200头）汇集起来。所用测试是针对D. immitis的物种，能够检测200只蚊子头中单个幼虫的DNA。通过仅探测蚊子头来达到第三幼虫阶段的特异性。在1996和1997年的每年的每个月中，从Bartow都检测到一个或多个感染D.线虫的蚊子。在12月，1月，2月或3月，从Gainesville或Baton Rouge没有检测到感染的蚊子。这些结果与先前的前哨犬和模型预测研究基本吻合，该研究表明，美国温暖的温带墨西哥湾沿岸地区的丝虫传播是季节性的，而不是以前认为的连续传播。

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