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Genetic differentiation, taxonomy and conservation of Australasian teals Anas spp.

  • Charles H. Daugherty (a1), Murray Williams (a1) and Jennifer M. Hay (a2)
Abstract
Summary

Australasian teal consist of five taxa (Anas gracilis, A. castanea, A. chlorotis, A. aucklandica and A. nesiotis) whose taxonomic identities and relationships have been uncertain. Analysis of variation at 14 allozyme loci indicates limited but clear divergence of New Zealand taxa (A. chlorotis, A. aucklandica, A. nesiotis), in agreement with previous studies of morphological variation. The New Zealand taxa are “terminal and evolutionarily independent units” that clearly meet the criteria for specific recognition in line with the phylogenetic species concept (PSC). Because each is also geographically restricted and has small world population size, specific recognition supports increased conservation status for each. The three New Zealand species do not form a sister group with A. castanea, as previously hypothesized; instead, A. castanea and A. gracilis are sister taxa.

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

J.C. Avise and C.F. Aquadro (1982) A comparative summary of genetic distances in the vertebrates: patterns and correlations. Evol. Biol. 15:151185.

J. Cracraft (1983) Species concept and speciation analysis. Pp.159187 in R.F. Johnston , ed. Current ornithology,1. New York: Plenum Press.

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Bird Conservation International
  • ISSN: 0959-2709
  • EISSN: 1474-0001
  • URL: /core/journals/bird-conservation-international
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