Jaworski Linda, Sauer Felix, Jansen Stephanie, Tannich Egbert, Schmidt-Chanasit Jonas, Kiel Ellen, Lühken Renke
Research Group Aquatic Ecology and Nature Conservation, Institute of Biology and Environmental Sciences, School of Mathematics and Science, Carl von Ossietzky University, Oldenburg, Germany.
Department of Arbovirology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
Med Vet Entomol. 2022 Jun;36(2):139-148. doi: 10.1111/mve.12559. Epub 2021 Nov 25.
Mosquito collections are commonly conducted with baited traps predominantly attracting host-seeking females. In contrast, resting sites are generally colonized by a broader range of the mosquito population, including a higher proportion of males and blood-engorged females. This study evaluates the sampling success of different artificial resting sites, attached to a deciduous or coniferous tree at different heights. As standard sampling method, carbon dioxide-baited Biogents Sentinel traps (BG traps) were operated in parallel. BG traps caught a higher number of specimens compared to the resting sites. However, the proportion of blood-engorged females and males was higher in resting sites. More Culiseta spp. specimens were collected in resting sites compared to BG traps, but less Aedes spp. specimens. In general, fewer specimens and species were recorded in small resting sites and at top height level compared to medium or large resting sites at medium or ground level. The proportion of males was highest at the ground, while the proportion of engorged females was highest at medium and top level. Due to the higher proportion of blood-engorged females, artificial resting sites are especially useful for studies of host-feeding patterns or xenosurveillance. Low costs and efforts allow a cost-effective increase of the number of resting sites per sampling site to collect more mosquitoes.
蚊虫采集通常使用诱饵诱捕器，主要吸引寻找宿主的雌蚊。相比之下，蚊虫的栖息场所一般有更广泛的蚊虫群体聚集，包括更高比例的雄蚊和饱血雌蚊。本研究评估了附着在落叶树或针叶树不同高度的不同人工栖息场所的采样成功率。作为标准采样方法，同时使用了二氧化碳诱饵的Biogents Sentinel诱捕器（BG诱捕器）。与栖息场所相比，BG诱捕器捕获的标本数量更多。然而，栖息场所中饱血雌蚊和雄蚊的比例更高。与BG诱捕器相比，在栖息场所收集到的库蚊属标本更多，但伊蚊属标本更少。总体而言，与中等或地面高度的中等或大型栖息场所相比，小型栖息场所和最高高度水平记录到的标本和物种较少。雄蚊比例在地面最高，而饱血雌蚊比例在中等和最高高度水平最高。由于饱血雌蚊比例较高，人工栖息场所对于宿主摄食模式研究或虫媒监测特别有用。低成本和低工作量使得每个采样点增加栖息场所数量以收集更多蚊虫具有成本效益。
