Edman J D, Scott T W, Costero A, Morrison A C, Harrington L C, Clark G G
Department of Entomology, University of Massachusetts, Amherst 01003, USA.
J Med Entomol. 1998 Jul;35(4):578-83. doi: 10.1093/jmedent/35.4.578.
Marked Aedes aegypti (L.) (5-6 d old) were released inside 2 groups of 5 houses (100 females per house) in a residential community in Florida, PR, to compare behavior of gravid females at sites where oviposition containers were absent to sites where containers were abundant (i.e., 2 tires and 10 ovipots were added to each yard). Two sequential releases were made so that both groups of houses were evaluated with oviposition containers removed and added. Mosquitoes resting inside the 10 release houses plus 20 additional neighboring houses were collected with backpack aspirators for 4 consecutive days, beginning 2 d after release. Because 172 of the 185 recaptured females (93%) were collected in the same houses in which they had been released, dispersal patterns were not directly comparable. However, the recapture rate in houses with containers added (13%) was significantly higher (P < 0.0001) than in houses with containers removed (6%). No difference was observed in the mean number of potential oviposition containers among the nonrelease houses at the 2 sites (3.9 versus 3.8 aquatic containers per house in the prerelease survey). Our results are consistent with the hypothesis that availability of oviposition sites is inversely correlated with the potential for female Ae. aegypti to disperse. These results have important implications because campaigns to reduce Ae. aegypti larval sites during dengue epidemics could have the undesirable effect of inducing the dispersal of infected adult female mosquitoes.
在波多黎各佛罗里达的一个居住社区，将大量埃及伊蚊（5 - 6日龄）放入两组各5栋房屋内（每栋房屋放100只雌蚊），以比较未放置产卵容器的地点与产卵容器丰富的地点（即每个院子添加2个轮胎和10个产卵罐）妊娠雌蚊的行为。进行了两次连续释放，以便对两组房屋在移除和添加产卵容器的情况下都进行评估。释放后2天开始，用背负式吸气器连续4天收集10个释放房屋以及另外20个相邻房屋内停歇的蚊子。由于185只重新捕获的雌蚊中有172只（93%）是在其被释放的同一房屋内被捕获的，所以扩散模式无法直接比较。然而，添加了容器的房屋中的重新捕获率（13%）显著高于移除了容器的房屋（6%）（P < 0.0001）。在两个地点的非释放房屋中，潜在产卵容器的平均数量没有差异（释放前调查中，每栋房屋分别有3.9个和3.8个水生容器）。我们的结果与以下假设一致：产卵地点的可利用性与埃及伊蚊雌蚊的扩散潜力呈负相关。这些结果具有重要意义，因为在登革热流行期间减少埃及伊蚊幼虫孳生地的活动可能会产生不良影响，即促使受感染的成年雌蚊扩散。
