Larval microhabitats of Lutzomyia longipalpis (Diptera: Psychodidae) in an endemic focus of visceral leishmaniasis in Colombia
Larval microhabitats of Lutzomyia longipalpis (Diptera: Psychodidae) in an endemic focus of visceral leishmaniasis in Colombia
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DOI：
10.1093/jmedent/34.6.719
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发表时间：
1997-11-01
影响因子：
2.1
通讯作者：
Morrison, AC
中科院分区：
文献类型：
--
作者：
Ferro, C;Pardo, R;Morrison, AC
1992 年 11 月至 1993 年 10 月，在美洲内脏利什曼病流行的哥伦比亚一个小型农村社区，对 Lutzomyia longipis (Lutz & Neiva) 幼虫栖息地进行了深入研究。使用聚氯乙烯管建造的浮现陷阱对各种土壤微生境进行采样，包括有盖猪圈的边缘区域、牛栏、树木底部和房屋周围 40 m 范围内的落叶层、距房屋 50 至 500 m 范围内的田地中的岩石以及一片次生林内的地点（岩石、棕榈树基部和落叶层）。实验室研究证实了羽化陷阱中捕获的白蛉的一般状况，这些研究确定了雄性长须白蛉的终末旋转速率以及该物种两性的胸部粘膜的角质生长层形成速率。研究期间（49 周）共捕获 55 只白蛉。十五个标本是 L. longipalpis；其中 11 只（每平方米 5 只）是在猪圈附近捕获的，3 只（每平方米 1.4 只）是在岩石栖息地附近捕获的，1 只（每平方米 1.6 只）是在树根处捕获的。其余的白蛉是 L. trinidadensis (Newstead) 或 L. cayennensis (Flock & Abonnenc)。我们的结果表明，L. longipalpis 幼虫广泛分散在房屋附近的地点，而不是集中在几个最佳的微生境中。
An intensive search for the larval habitats of Lutzomyia longipalpis (Lutz & Neiva) was conducted from November 1992 to October 1993 at a small rural community in Colombia where American visceral leishmaniasis is endemic. Emergence traps constructed from polyvinyl chloride pipes were used to sample a variety of soil microhabitats that included edge areas of covered pigpens, cattle corrals, the base of trees, and leaf litter at sites within 40 m of a house, rocks in fields located between 50 and 500 m from houses, and sites within a patch of secondary forest (rocks, base of palm trees, and leaf litter). The teneral status of the sand flies captured in the emergence traps was confirmed by laboratory studies that determined the rate of terminalia rotation in male L. longipalpis and the rate of cuticular growth layer formation of the thoracic phragma in both sexes of this species. A total of 55 teneral sand flies was captured during the study period (49 wk). Fifteen specimens were L. longipalpis; of these 11 (5 sand flies per square meter) were captured near pigpens, 3 (1.4 sand flies per square meter) were captured near rock resting sites, and 1 (1.6 sand flies per square meter) was collected at the base of a tree. The remainder of the sand flies were either L. trinidadensis (Newstead) or L. cayennensis (Flock & Abonnenc). Our results indicate that L. longipalpis larvae were dispersed widely in sites near houses, rather than concentrated in a few optimal microhabitats.