讲座题目：Disturbance effects on mosquito oviposition and larval performance in outdoor mesocosms
主讲人: Dr. C. Duchet, University of Haifa
主持人：陈雪初 副教授
开始时间：2016-10-8 10:00
讲座地址：生科辅楼119会议室
主办单位：生态与环境科学学院
报告人简介：
Claire Duchet系以色列海法大学进化生物学和环境学院博士后，其合作导师为海法大学进化生物学和环境学院，群落生态学实验室主任Leon Blaustein教授。Claire博士在浮游生物多样性领域取得有影响力成就，研究成果发表在《Environmental pollution》, 《Chemosphere》等期刊发表。
报告摘要：
Several studies have shown that biodiversity can forestall unwanted species outbreaks and may also prevent settlement of invasive species. The negative effects of several taxa on larval populations of mosquitoes have been demonstrated in laboratory and field studies. Indeed, some mosquitoes are known to select breeding sites that enable them to avoid antagonists, such as competitors, and predators. However, mechanisms to explain these relations, and under what conditions they will occur, remain unclear. Various disturbances of mosquito breeding sites may not only have an immediate (generally negative) effect on mosquitoes utilizing these disturbed breeding sites, but may have residual effects due to the alteration of community structure, and the decrease in species diversity. In a number of disturbances such as broad-spectrum pesticides and pond desiccation followed by reflooding, disturbed breeding sites may become attractive to ovipositing mosquitoes because the disturbance decreases mosquito antagonists, which often results in increase in mosquito food resources such as algae. Mosquitoes are pioneer, meaning good colonizers, and fast recolonization will lead to higher abundances of mosquitoes than in undisturbed sites. In such context, the objective of this project is to identify how mosquito antagonists in particular, and species diversity in general, affect mosquito oviposition habitat selection and mosquito larval performance and how ultimately, this can affect mosquito population dynamics. More specifically, our objective is to assess mosquito oviposition habitat selection depending on community structure in temporary artificial pools (outdoor mesocoms), during the post-disturbance period of community recovery after natural disturbances (top-predator, desiccation, flash flood) and anthropogenic disturbance (pesticide applications).
