Biotype Variation and Host Change in Bruchids: Causes and Effects in the Evolution of Bruchid Pests

摘要: Results are presented to demonstrate that populations of Callosobruchus maculatus may be genetically different with respect bionomic characteristics and they also differ in their capacity utilize unusual hosts. They may, however, rapidly adapt such hosts them more efficiently. The multivoltine, polyphagous habits pest bruchid species then considered the context origin from oligophagous, wild conspecifics which appear, many respects, resemble typical non-pest bruchids life-cycles. It is concluded a consequence lives as pests stored legumes not pre-adaptations for an existence. cultivation primary suggested key factor has resulted importance. Their spread into additional cultivated can logically expected but emergence new unlikely unless current brought intensively bred mammalian consumption.