Publications

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evolution of multiple components of virulence in drosophila-nematode associations.virulence is of central importance in host-parasite interactions, yet little is known about how it changes over extended evolutionary periods. in this study, all four species in the testacea species group of drosophila were experimentally infected with sympatric and allopatric nematodes in the howardula aoronymphium species complex, and the effect of parasite infection on three components of host fitness was determined. the drosophila species show striking differences in their responses to infec ...200312940359
"sex ratio" meiotic drive in drosophila testacea.we document the occurrence of "sex ratio" meiotic drive in natural populations of drosophila testacea. "sex ratio" males sire greater than 95% female offspring. genetic analysis reveals that this effect is due to a meiotically driven x chromosome, as in other species of drosophila in which "sex ratio" has been found. in contrast to other drosophilids, the "sex ratio" and standard chromosomes of d. testacea do not differ in gene arrangement, implying that the effect may be due to a single genetic ...19902249763
x chromosome drive in a widespread palearctic woodland fly, drosophila testacea.selfish genes that bias their own transmission during meiosis can spread rapidly in populations, even if they contribute negatively to the fitness of their host. driving x chromosomes provide a clear example of this type of selfish propagation. these chromosomes have important evolutionary and ecological consequences, and can be found in a broad range of taxa including plants, mammals and insects. here, we report a new case of x chromosome drive (x drive) in a widespread woodland fly, drosophila ...201728402000
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