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Coexistence in space and time of sexual and asexual populations of the cereal aphid Sitobion avenae

C. Dedryver ; M. Hullé ; J. Legallic ; M. Caillaud ; J. Simon | 2001

Aphids typically reproduce by cyclical parthenogenesis, with a single sexual generation alternating with numerous asexual generations each year. However, some species exhibit different life cycle variants with various degrees of investment in se[...]

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Molecular markers to differentiate two morphologically-close species of the genus Sitobion

C. Figueroa ; J. Simon ; J. Legallic ; H. Niemeyer | 1999

A set of molecular markers to differentiate the aphid (Hemiptera: Aphidoidea) species Sitobion avenae (Fabricius) from Sitobion fragariae (Walker), is presented. These markers correspond to (1) a region of the mitochondrial DNA, (2) five species[...]

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