Meyabeme Elono Alvine Larissa, Liess Matthias, Duquesne Sabine
UFZ - Helmholtz Centre for Environmental Research, Department of System Ecotoxicology, Permoserstrasse 15, D-04318 Leipzig, Germany.
J Vector Ecol. 2010 Dec;35(2):419-27. doi: 10.1111/j.1948-7134.2010.00101.x.
Abundances of mosquito larvae and associated invertebrate communities were assessed in 27 temporary ponds during the spring season in wetland areas of Germany. Four genera of mosquitoes were identified: Aedes, Anopheles, Culex, and Culiseta. We focused our analyses on Aedes spp. because this genus was the most abundant (92% of total abundance) and frequently encountered mosquito (present in 65% of investigated sites). The abundance of Aedes spp. was negatively associated with the abundance of competitors for food, and to a lesser extent with those of intraguild predators and strict predators. The influence of these natural antagonists on larvae of Aedes was stronger in ponds with higher levels of dissolved oxygen (53 ± 4%) than in ponds with lower levels (16 ± 1%). The overall abundance of antagonists explained 42% of the variation in abundance of Aedes spp. at sites with higher levels of dissolved oxygen. Of this explained variation, competitors accounted for 34.7%, whereas the abundance of intraguild predators and strict predators accounted for only 6.8 and 0.5%, respectively. Therefore, the promotion of competing species might be an appropriate ecological approach for the control of Aedes spp. in temporary ponds in these areas.
在德国湿地地区的春季，对27个临时池塘中的蚊虫幼虫及相关无脊椎动物群落的数量进行了评估。鉴定出了四个蚊属：伊蚊属、按蚊属、库蚊属和脉毛蚊属。我们将分析重点放在伊蚊属上，因为该属是数量最多（占总数量的92%）且最常出现的蚊虫（在65%的调查地点存在）。伊蚊属的数量与食物竞争者的数量呈负相关，与同类相残捕食者和严格捕食者的数量呈较弱的负相关。在溶解氧水平较高（53 ± 4%）的池塘中，这些自然天敌对伊蚊幼虫的影响比在溶解氧水平较低（16 ± 1%）的池塘中更强。在溶解氧水平较高的地点，天敌的总体数量解释了伊蚊属数量变化的42%。在这一可解释的变化中，竞争者占34.7%，而同类相残捕食者和严格捕食者的数量分别仅占6.8%和0.5%。因此，促进竞争物种的生长可能是控制这些地区临时池塘中伊蚊属的一种合适的生态方法。
