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Geographic distribution and seasonal variation of mitochondrial DNA haplotypes in the aphid Rhopalosiphum padi (Hemiptera: Aphididae)

D. Martineztorres ; A. Moya ; P. Hebert ; J. Simon | 1997

This study examines the spatial and seasonal patterning of mitochondrial DNA diversity in French populations of the bird cherry-oat aphid, Rhopalosiphum padi (Linnaeus), on both its primary and secondary hosts. Our results confirm the presence o[...]

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Molecular evolution of aphids and their primary (Buchnera sp.) and secondary endosymbionts: Implications for the role of symbiosis in insect evolution

B. Sabater ; R. Vanham ; D. Martineztorres ; F. Silva ; A. Latorre ; A. Moya | 2001

Aphids maintain an obligate, endosymbiotic association with Buchnera sp., a bacterium closely related to Escherichia coli. Bacteria are housed in specialized cells of organ-like structures called bacteriomes in the hemocoel of the aphid and are [...]

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Molecular systematics of aphids and their primary endosymbionts

D. Martineztorres ; C. Buades ; A. Latorre ; A. Moya | 2001

Aphids constitute a monophyletic group within the order Homoptera (i.e., superfamily Aphidoidea). The Aphidoidea originated in the Jurassic about 150 my ago from some aphidiform ancestor whose origin can be traced back to about 250 my ago. They [...]

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