期刊
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
卷 158, 期 -, 页码 127-131出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.agee.2012.06.004
关键词
Pilophorus perplexus; Lasius grandis; Cardiastethus fasciiventris; Mediterranean; Myrmecomorphy; Biological control
资金
- MCYT-FEDER [CGL2004-05240-C02-01/BOS, CGL2007-64080-C02-01/BOS, CGL2010-18182]
The Heteroptera assemblage of a citrus grove and how it was affected by ant-exclusion was examined during transformation from conventional to organic agriculture. The results showed that the Heteroptera assemblage changed dramatically over the eight years of the study: at first, it mainly consisted of herbivorous lygaeids and predatory anthocorids but became dominated by predatory minds in 2008-2009. The predator/herbivore ratio increased steadily over the eight years of the study. Ants can form mutualistic relationships with heteropteran pests. However, exclusion of ants from canopies did not affect the Heteroptera assemblage at the beginning of the study, but had a profound effect later on. In particular, ant-exclusion increased the abundance of most predatory Heteroptera, except for the myrmecomorphic mind Pilophorus perplexus, which was approximately five times more abundant in control than in ant-excluded trees; the analyses showed that the only mimicked ant species was Lasius grandis. (C) 2012 Elsevier B.V. All rights reserved.
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