红色型和绿色型豌豆蚜种群演替的生态机制研究

项目名称： 红色型和绿色型豌豆蚜种群演替的生态机制研究

项目编号： No.31260433

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 农业科学

项目作者： 刘长仲

作者单位： 甘肃农业大学

项目金额： 50万元

中文摘要： 豌豆蚜是重要的豆科作物及牧草害虫。近年来，红色型豌豆蚜的种群数量所占比例在逐年上升。由于红色型和绿色型豌豆蚜对环境条件的反应及致害性存在显著差异，一旦环境条件变化及作物品种抗性丧失，会造成种群数量爆发成灾。生物间的资源竞争和似然竞争是生态学研究的热点问题，其竞争机制也是生物间演替的核心内容之一。但目前尚不清楚两种色型豌豆蚜的资源竞争对策以及温度变化对资源竞争的影响规律，对天敌作用下两种色型豌豆蚜的似然竞争策略也存在相反的结论。本课题将研究红色型和绿色型豌豆蚜对环境温度变化的适应对策，对食物资源的竞争机制以及在天敌作用下的似然竞争策略，明确两种色型豌豆蚜在相同食物资源及共同天敌作用下的生态对策及其变化规律，揭示两种色型豌豆蚜的种群动态及演替机制。

中文关键词： 豌豆蚜；色型；种群演替；资源竞争；似然竞争

英文摘要： The pea aphid is one of important pests on legume crops and forages, which include red and green color morphs. In recent years, the population of red pea aphid rises year by year. Because there is significant difference in the response to environmental conditions and virulence between the red and green pea aphid, the pea aphid population will break out and cause heavy losses once the changes in environmental conditions and crop varieties resistance loss. Biological resource competition and apparent competition are the hot focus in Ecology, and the competition mechanism is the core contents of biological succession as well. And now, it is not clear both in resource competition countermeasure and the influence regularity of temperature changes on resource competition in the two color morphs. Meanwhile, an opposite conclusion is existed about the apparent competition strategy in the two color morphs under the action of natural enemies. So the project is aim at the adaptive strategy in ambient temperature changes, the competition mechanism on food resources as well as the apparent competition strategy in natural enemies. In order to clear the ecological strategy and its change rules in two biotypes under the same food resources and common enemies, and to reveal the population dynamics and succession mechanism of two

英文关键词： Pea aphid；Color morph；Population succession；Resource competition；Apparent competition