Hearnden M N, Kay B H
Queensland Institute of Medical Research, P. O. Royal Brisbane Hospital, Australia.
J Am Mosq Control Assoc. 1997 Jun;13(2):164-70.
From November 1990 to November 1992, immature mosquitoes were sampled from the shoreline and from emergent beds of the submerged aquatic plant Hydrilla verticillata at the Ross River reservoir, northern Australia. Aerial mapping of Hydrilla beds was done in conjunction with sampling to estimate total immature mosquito numbers. Larvae of 7 species were found. Culex annulirostris. Anopheles annulipes s.l., and Anopheles amictus comprised 80.4% of the total. Peak larval densities occurred in the late wet season period in both habitat types (March to May) but Hydrilla generally supported higher densities, particularly of An. annulipes s.l. (43.7% of the total sample), than the shoreline habitats. Anopheles annulipes replaced Cx. annulirostris as the predominant taxon when 1990-92 data were compared with data for 1985-86. The Hydrilla beds supported on the order of 5.6 x 10(9) immatures during the period of peak density. This suggests that where human exposure is of concern, mosquito control in habitats such as Hydrilla is warranted.
1990年11月至1992年11月期间，在澳大利亚北部罗斯河水库的海岸线以及沉水水生植物黑藻的挺水层采集未成熟蚊子样本。在采样的同时对黑藻层进行航空测绘，以估算未成熟蚊子的总数。共发现7种幼虫。环喙库蚊、环纹按蚊复合组和无斑按蚊占总数的80.4%。两种栖息地类型的幼虫密度峰值均出现在雨季后期（3月至5月），但黑藻层通常支持更高的密度，尤其是环纹按蚊复合组（占总样本的43.7%），高于海岸线栖息地。将1990 - 1992年的数据与1985 - 1986年的数据进行比较时，环纹按蚊取代环喙库蚊成为主要类群。在密度峰值期间，黑藻层支持约5.6×10⁹只未成熟蚊子。这表明，在关注人类接触风险的情况下，有必要对黑藻等栖息地的蚊子进行控制。
