• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological Entomology >Resource competition assays between the African big-headed ant, Pheidole megacephala (Fabricius) and the invasive Argentine ant, Linepithema humile (Mayr): mechanisms of inter-specific displacement
【24h】

Resource competition assays between the African big-headed ant, Pheidole megacephala (Fabricius) and the invasive Argentine ant, Linepithema humile (Mayr): mechanisms of inter-specific displacement

机译：非洲大头蚁Pheidole megacephala（Fabricius）和阿根廷入侵性蚂蚁Linepithema humile（Mayr）之间的资源竞争分析：种间置换的机制

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

1. The spread of Argentine ants, Linepithema humile (Mayr), in introduced areas is mainly through the displacement of native ant species owing to high inter-specific competition. In South Africa, L. humile has not established in the climatically suitable eastern and northern escarpments dominated by the African big headed ant, Pheidole megacephaia (Fabricius), probably owing to local biotic resistance. 2. Inter-specific aggression, at the individual and colony level, and competition for a shared resource were evaluated in the laboratory. 3. Aggression between the two ant species was very high in all of the assays. Both species suffered similar mortality rates during one-on-one aggression assays, however, during symmetrical group confrontations, L. humile workers showed significantly higher mortality rates than P. megacephala workers. During asymmetrical group confrontations both species killed more of the other ant species when they had numeric advantage. Both ant species located the shared resource at the same time; however, once P megacephala discovered the bait, they displaced L. humile from the bait through high inter-specific aggression, thereafter dominating the bait for the remainder of the trial. 4. The results demonstrate the potential of P megacephala to prevent the establishment and survival of incipient L. humile colonies through enhanced resource competition and high inter-specific aggression. This is the first study to indicate potential biotic resistance to the spread of L. humile in South Africa.
机译：1.阿根廷蚂蚁Linepithema humile（Mayr）在引入地区的传播主要是由于种间竞争激烈而导致本地蚂蚁物种的流离失所。在南非，以非洲大头蚁Pheidole megacephaia（Fabricius）为主导的，在气候适宜的东部和北部悬崖上尚未建立起L. humile，这可能是由于当地的生物抗性所致。 2.在实验室中评估了个体和群体水平上的种间侵略以及对共享资源的竞争。 3.在所有测定中，两种蚂蚁物种之间的攻击力非常高。在一对一的攻击试验中，这两个物种的死亡率均相近，但是，在对称的群体对抗中，L。humile工人的死亡率明显高于P. megacephala工人。在非对称群体对抗中，两个物种在拥有数值优势时会杀死更多其他蚂蚁物种。两种蚂蚁物种同时定位共享资源。但是，一旦巨头P发现了诱饵，他们便通过高度的种间侵略将L. humile从诱饵中移出，然后在其余的试验中主导诱饵。 4.结果表明，通过增强资源竞争和高度种间侵略性，巨大头虱有可能阻止初生的人草L. humile菌落的建立和存活。这是第一项表明潜在的生物抗药性对南非人种L. humile的研究。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号