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Effect of weeds on colonization of cowpea byAphis craccivoraKoch (Homoptera: Aphididae) and its major predators in Nigeria

 

作者: T. I. Ofuya,  

 

期刊: Tropical Pest Management  （Taylor Available online 1989）
卷期: Volume 35, issue 4  

页码: 403-405

 

ISSN:0143-6147

 

年代: 1989

 

DOI:10.1080/09670878909371416

 

出版商: Taylor & Francis Group

 

关键词: Aphis craccivora;cowpea;predators;weeds

 

数据来源: Taylor

 

摘要:

Insect colonization of cowpea,Vigna unguiculatain contiguous weedy and weed‐free plots was monitored in the early and late seasons of 1986 in Akure, Nigeria. The cowpea aphid,Aphis craccivoraKoch preferentially invaded weed‐free plots and developed higher densities thereon. Numbers of predatory coccinellid and syrphid larvae were higher in weedy plots despite lower aphid densities.

 

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