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  • Title: Cytogenetical aspects of morsitans tsetse flies with particular reference to Glossina pallidipes (Diptera, Glossinidae).
    Author: Southern DI, Pell PE.
    Journal: Cytobios; 1981; 30(119):135-52. PubMed ID: 7285630.
    Abstract:
    The basic diploid chromosome of Glossina pallidipes is 2n = 6 and includes a pair of large sub-metacentric autosomes (L1), a shorter pair of metacentric autosomes (L2), and an X and Y which constitute a heteromorphic pair. The male meiotic sequence, although similar to that of other tsetse species, is characterized by asynapsis between X and Y chromosomes, and only tenuous association between the autosomes. Giemsa C-banding characteristics are described for the chromosomes of five species/sub-species and by means of this technique a whole range of hitherto unsuspected polymorphisms have been discovered. Polytene chromosome maps of G. pallidipes have been prepared and a description of all principal cytological markers is provided. A detailed comparison between these chromosomes and those of G. austeni has been conducted, and the conclusion is that although they must share a common ancestor, extensive band differences and structural change have occurred during phylogeny.
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