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We describe a simple method, using allozyme electrophoresis,that enables the identification of individual aphids, and demonstrate its application to the Sitobion miscanthi (Takahashi)-Sitobion nr fragariae complex of species and chromosomal races.
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The aphid Therioaphis trifolii (Monell) is indigenous to the western Palaearctic region, where it colonizes lucerne (alfalfa), clovers and related legumes. A form of the species, T. trifolii f. maculata (the spotted alfalfa aphid, SAA), has been[...]
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E. Turak ; R. Talent ; P. Sunnucks ; D. Hales | 1998Chromosomal races of the aphid Sitobion miscanthi (Takahashi), and a closely-related species S. near fragariae (Aphididae: Macrosiphini) show seasonal differences in abundance in eastern Australia. We tested whether this was related to differenc[...]
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P. Sunnucks ; D. Chisholm ; E. Turak ; D. Hales | 1998The aim of this study was to test whether host plant responses of Sitobion aphids have evolved under parthenogenesis and to examine the relationship between genetic and phenotypical similarity. There are four known chromosomal races of Australia[...]
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D. Hales ; J. Tomiuk ; K. Wohrmann ; P. Sunnucks | 1997In this paper we review recent work on aspects of aphid biology related to evolution and genetics, and suggest some directions for future research. Sections include aphid annual cycles, sexual reproduction, cytogenetics, classical genetics and m[...]
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A. Wilson ; P. Sunnucks ; D. Hales | 1999In sharp contrast to their southeast Asian and European counterparts, Sitobion miscanthi and S. near fragariae aphids in Australia exhibit a complete absence of sexual reproduction. This demands an explanation within the context of the evolution[...]
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P. Sunnucks ; P. England ; A. Taylor ; D. Hales | 1996Single-locus microsatellite variation correlated perfectly with chromosome number in Sitobion miscanthi aphids. The microsatellites were highly heterozygous, with up to 10 alleles per locus in this species. Despite this considerable allelic vari[...]
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Fourteen samples of cotton aphid, Aphis gossypii clover were obtained from different localities in Australia. Wingless parthenogenetic females from each sample were transferred to seedlings of various host plants in the laboratory and reproduced[...]
