Gorrochotegui-Escalante N, Fernandez-Salas I, Gomez-Dantes H
Laboratorio de Entomologia Medica, FCB-UANL, San Nicolas de los Garza, Mexico.
J Med Entomol. 1998 Sep;35(5):699-703. doi: 10.1093/jmedent/35.5.699.
Field trials of the predacious copepod Mesocyclops longisetus Thiubaud were conducted in northeastern Mexico to determine the effectiveness of this species to control larval Aedes aegypti (L.) populations and to survive and reproduce in nature. Groups of 200, 50, and 50 ovigerous M. longisetus females were inoculated into 200-liter metal drums, discarded tires, and cemetery flower vases, respectively, which are 3 of the more important Aedes breeding sites in this area. Larvae were sampled at 15-d intervals, and total surviving cyclops were collected at the end of the study, 120 d later. Community participation was solicited through a simple training program on copepod rescue before drum cleaning and facilitated by the addition of a drum marker to remind residents of copepod presence. Results showed good cooperation and after 4 mo all peridomestic drums, still supported variable numbers of cyclopoids. Average of larvae reduction was 37.5% for drums, 67.5% for flower vases, and 40.9% for tires. This study shows difficulties of using cyclopoids for tires and vases in areas where prolonged dry seasons desiccated these habitats and reduced copepod survival.
在墨西哥东北部对捕食性桡足类长刺中剑水蚤（Mesocyclops longisetus Thiubaud）进行了田间试验，以确定该物种控制埃及伊蚊（Aedes aegypti (L.)）幼虫种群以及在自然环境中生存和繁殖的有效性。分别将200只、50只和50只携卵的长刺中剑水蚤雌体接种到200升金属桶、废弃轮胎和墓地花瓶中，这些是该地区埃及伊蚊3个更重要的繁殖场所。每隔15天对幼虫进行采样，并在研究结束时（120天后）收集存活的剑水蚤总数。通过在清理水桶前开展一项关于剑水蚤救助的简单培训项目来争取社区参与，并通过添加水桶标记物来提醒居民剑水蚤的存在，以促进参与。结果显示合作良好，4个月后，所有家庭周围的水桶中仍有数量不等的剑水蚤。水桶中幼虫数量平均减少37.5%，花瓶中减少67.5%，轮胎中减少40.9%。这项研究表明，在旱季较长使这些栖息地干涸并降低剑水蚤存活率的地区，将剑水蚤用于轮胎和花瓶存在困难。
