Craig R W, Katherine J L, Natasha J W, Veronica R S
Sansom Institute, University of South Australia, Adelaide, South Australia 5001.
Trop Biomed. 2008 Aug;25(2):140-4.
Surveillance and control of the dengue vector mosquito, Aedes aegypti, is commonly reliant on its egg-laying behaviour, which is affected by the presence of conspecific eggs. However, the influence of varying egg density and breeding site choice on Ae. aegypti egg-laying strategy is unclear. In this laboratory study Ae. aegypti demonstrated a strong oviposition preference for substrates with intermediate numbers of conspecific eggs, thus demonstrating an 'Allee effect'. The withholding of some eggs, a trait required for skip oviposition, was almost non-existent when no site choice was available, regardless of egg density; indicating that skip oviposition behaviour is modulated according to the availability of suitable sites. These experiments have revealed a hierarchy of oviposition choices in Ae. aegypti that may thwart attempts to use semiochemicals from eggs to enhance oviposition-based surveillance and control methods.
登革热媒介蚊子埃及伊蚊的监测和控制通常依赖于其产卵行为，而这种行为会受到同种卵存在的影响。然而，不同的卵密度和繁殖地点选择对埃及伊蚊产卵策略的影响尚不清楚。在这项实验室研究中，埃及伊蚊对同种卵数量中等的底物表现出强烈的产卵偏好，从而证明了一种“阿利效应”。当没有可供选择的地点时，无论卵密度如何，进行间隔产卵所需的保留一些卵的行为几乎不存在；这表明间隔产卵行为会根据合适地点的可用性进行调节。这些实验揭示了埃及伊蚊产卵选择的层次结构，这可能会阻碍利用来自卵的信息素增强基于产卵的监测和控制方法的尝试。
