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Biogeography and phylogeny of the New Zealand cicada genera (Hemiptera: Cicadidae) based on nuclear and mitochondrial DNA data

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Abstract:

Abstract Aim 

Determine the geographical and temporal origins of New Zealand cicadas. Location 

New Zealand, eastern Australia and New Caledonia. Methods 

DNA sequences from 14 species of cicadas from New Zealand, Australia, and New Caledonia were examined. A total of 4628 bp were analysed from whole genome extraction of four mitochondrial genes (cytochrome oxidase subunits I and II, and ribosomal 12S and 16S subunits) and one nuclear gene (elongation factor-1 alpha). These DNA sequences were aligned and analysed using standard phylogenetic methods based primarily on the maximum likelihood optimality criterion. Dates of divergences between clades were determined using several molecular clock methods. Results 

New Zealand cicadas form two well-defined clades. One clade groups with Australian taxa, the other with New Caledonian taxa. The molecular clock analyses indicate that New Zealand genera diverged from the Australian and New Caledonian genera within the last 11.6 Myr. Main conclusions 

New Zealand was likely colonized by two or more invasions. One NZ lineage has its closest relatives in Australia and the other in New Caledonia. These invasions occurred well after New Zealand became isolated from other land masses, therefore cicadas must have crossed large bodies of water to reach New Zealand.

Keywords: Cicada; New Zealand; dispersal; molecular clock; phylogeny

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1365-2699.2003.01012.x

Affiliations: 1: Landcare Research, Mt Albert, Auckland, New Zealand 2: Department of Ecology and Evolutionary Biology, University of Connecticut, CT, USA 3: Entomology Department, Australian Museum, Sydney, NSW, Australia

Publication date: April 1, 2004

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