Sitobion - genetics and the environment

E. Turak, Dinah Hales

    Research output: Contribution to journalArticlepeer-review


    There are at least three genetically different forms of Sitobion on cereal crops in southern Australia. These forms are morphologically similar but can be distinguished by protein electrophoresis. We believe that two species are represented: a species near S. fragariae (Walker), with a diploid chromosome number of 18, and two chromosomal races of S. miscanthi (Takahashi), one with 2n = 17 and the other with 2n = 18. These three forms are common in the field at different times of the year. Experiments were carried out to determine whether this seasonal difference between the three genetic forms reflected different environmental tolerances. Growth rate, reproductive rate and offspring weight were used as parameters of performance under different temperature regimes. The results showed that the observed seasonal differences reflect different temperature tolerances.

    Original languageEnglish
    Pages (from-to)307-313
    Number of pages7
    JournalActa Phytopathologica et Entomologica Hungarica
    Issue number1-4
    Publication statusPublished - 1990
    Event3RD INTERNATIONAL SYMP ON APHIDS - Kecskemet, Hungary
    Duration: 14 Aug 198919 Aug 1989


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