A cytogenetical study of Glossina fuscipes fuscipes including a comparison of the polytene chromosome maps with those of Glossina austeni (Diptera,Glossinidae) |
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Authors: | P E Pell D I Southern |
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Institution: | (1) Cytogenetics laboratory, Zoology Department, University of Manchester, Manchester, England |
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Abstract: | The male meiotic sequence is described for the tsetse fly Glossina fuscipes fuscipes together with the polytene chromosome maps and all principal cytological markers. The diploid chromosome number is 2n=6 and includes a pair of large submetacentric autosomes (L1), a shorter pair of metacentric autosomes (L2), and an X and Y which constitute a heteromorphic pair. Male meiosis is normally achiasmate although evidence is presented which suggests that chiasmata do form in about 1% of males. A detailed comparison between the polytene chromosomes of this species and Glossina austeni indicates that although they must have had a common ancestor, G. austeni is genetically more closely related to morsitans group tsetses. |
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