School of Public Health and Tropical Medicine and Rehabilitative Sciences, James Cook University, PO Box 6811, Cairns, 4870, Queensland, Australia.
J Med Entomol. 2012 Jan;49(1):29-34. doi: 10.1603/me11116.
Mini-mark-release-recapture experiments were conducted in suburban Cairns, Australia to establish the sampling rate of the Biogents-Sentinel (BGS) trap for adult Aedes aegypti (L.). Small cohorts of marked mosquitoes (30 females and 15 males) were released at typical Cairns residences, and the number of marked mosquitoes recaptured in the BGS trap after 24 h was recorded. The sampling rate was compared between two seasons and two common housing styles (high-set 'Queenslander-style' timber and low-set brick houses), between old gravid and young nulliparous females, and between mosquitoes released in different areas of a house. Overall, the BGS traps recaptured a mean (+/- SEM) of 24.6% (+/- 1.9) of the released marked female mosquitoes in 24 h. The mean recapture rate for females was significantly higher in the dry season (30.4% +/- 2.8) compared with the wet (18.8% +/- 2.2). The overall recapture rates did not differ significantly between the two house types, but variability between the individual premises was high. An overall mean of 18.2% (+/- 1.7) of males was collected. Recapture rates of young nullipars and older gravid females were similar. These recapture rates can be used to estimate the population density of Ae. aegypti females in north Queensland, although it will provide an underestimate as trap sample was largely representative of mosquitoes present in the same area as the trap, and not from other areas of the house.
在澳大利亚凯恩斯郊区进行了小型释放-回收-再捕获实验，以确定 Biogents-Sentinel（BGS）诱捕器对成年埃及伊蚊（Aedes aegypti）（L.）的采样率。将一小群标记的蚊子（30 只雌性和 15 只雄性）释放到典型的凯恩斯住所，记录 24 小时后 BGS 诱捕器中回收的标记蚊子数量。比较了两个季节和两种常见住房类型（高置“昆士兰式”木材和低置砖房）、老孕蚊和年轻初产蚊之间以及房屋不同区域释放的蚊子之间的采样率。总体而言，BGS 诱捕器在 24 小时内捕获了释放的标记雌性蚊子的平均（+/- SEM）24.6%（+/- 1.9）。在旱季（30.4% +/- 2.8），雌性的平均回收率明显高于雨季（18.8% +/- 2.2）。两种房屋类型之间的总体回收率没有显著差异，但个别房屋之间的差异很大。共收集到 18.2%（+/- 1.7）的雄性。年轻的初产蚊和年长的孕蚊的回收率相似。这些回收率可用于估计北昆士兰州埃及伊蚊雌性的种群密度，但由于诱捕样本主要代表与诱捕器相同区域的蚊子，而不是来自房屋的其他区域，因此提供的估计值会偏低。
