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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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J. Simon ; C. Rispe ; P. Sunnucks | 2002Many theories attempt to explain why sexual reproduction has invaded life so thoroughly. Some are plausible, but there remains a need for evolutionary biologists to identify the main factor(s) accounting for the maintenance of sex in diverse, re[...]
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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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P. Sunnucks ; P. Debarro ; G. Lushai ; N. Maclean ; D. Hales | 1997In a previous study, samples of the grain aphid Sitobion avenae (F.) were collected from wheat and adjacent cocksfoot hosts in a population thought to be primarily parthenogenetic, and DNA from individual aphids was analysed with a multilocus te[...]
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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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J. Simon ; S. Baumann ; P. Sunnucks ; J. Pierre ; Le gallic. J.F. ; C. Dedryver ; P. Hebert | 1999
