Predation of cotton leafworm first instar larvae,Alabama argillacea [Lep.: Noctuidae] |
| |
| Authors: | S Gravena H F Da Cunha |
| |
| Institution: | (1) Department of Entomology and Nematology Center of Integrated Pest Management Faculty of Agricultural and Veterinary Sciences, Paulista State University, 14870 Jaboticabal, SP |
| |
| Abstract: | Natural predation first instar larvae of the cotton leafworm (CLW)A. argillacea was studied in cotton fields in Jaboticabal, Sao Paulo State, Brazil, during 1986. The presence of naturally occurring arthropod
predators showed a first instar larvae predation rate of 78.6 and 88.9% after 24 h and 48 h of exposure, respectively. A predator
prey ratio of 1∶1 (1 CLW key predator per 1 prey/plant) maintained a level of no more than 1 CLW small larvae per plant. The
most evident arthropod predators in the studied fields were: beetles (Coleoptera: Coccinellidae), antsPheidole sp. andConomyrma sp.;Dermaptera Doru lineare (Eschs);Hemiptera Geocoris sp., andOrius insidiosus Say; and the spidersTheridion volubile, Chrysso pulcherrima, Misumenops sp.,Chiracanthium sp., andOxyopes salticus Hentz.
|
| |
| Keywords: | Cotton leafworm Alabama argillacea biological control predation |
| 本文献已被 SpringerLink 等数据库收录！ |
|
