Cytogenetics of New Zealand blackflies of the genus Austrosimulium (Diptera: Simuliidae) 1. The cytogenetics of Austrosimulium australense |
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Authors: | M C McLea D M Lambert |
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Institution: | Evolutionary Genetics Laboratory Department of Zoology , University of Auckland , Private Bag, Auckland , New Zealand |
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Abstract: | Abstract This study undertakes a cytogenetic analysis of the New Zealand blackfly species Austrosimulium australense (Schiner). The principles of such an approach are outlined, and previous taxonomic studies of the genus Austrosimulium, in particular the taxonomic position of A. australense, are discussed. Populations from North Island localities covering a wide area were sampled and analysed for polymorphisms in the polytene chromosomes, taken from salivary glands of larvae. In all, 1018 larvae from 49 sites were analysed. A polytene chromosome map of A. australense is presented, with details of chromosomal inversions found in salivary gland cells. Three geographical zones are designated, according to the incidence of certain chromosomal polymorphisms. |
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Keywords: | Diptera Simuliidae Austrosimulium australense cytogenetics polytene chromosomes polymorphism population variation |
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