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Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species

Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species
Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species
Cryptic diversity represents a major challenge to the accurate assessment of biodiversity, but the combined use of genetic and morphological analyses has proven to be a powerful approach to detect it. This is especially important for groups for which genetic information is not yet available. Here, we studied the highly conspicuous habitat-forming Pyura stolonifera species complex (Tunicata), which, as has recently been revealed, shows surprising levels of cryptic diversity, but whose systematics and biogeographical patterns in Australasia nonetheless remain poorly understood. We first present detailed taxonomic information of all the species associated with the P.?stolonifera species complex. We then proceed to describe the results of an exhaustive survey that included south-east Australia, Tasmania, and New Zealand. Subsequently, we present morphological and mitonuclear genetic analysis of two unresolved lineages that comprise the species Pyura praeputialis and a species that is formally described here (Pyura doppelgangera sp. nov.). Although the ranges of these two species overlap on mainland Australia, we found no sites at which both species live in sympatry, and there was no morphological or genetic evidence of hybridization. Taken together, the present study illustrates the usefulness of a combined morphogenetic approach in unravelling overlooked marine diversity in a relatively well-studied region.
adenine nucleotide transporter (ANT) intron, ascidiacea, cytochrome c oxidase subunit I (COI), phylogeny, pyuridae
0024-4082
597-611
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Teske, Peter R.
a85ccc74-7aa3-424c-bf48-2caaecbe0e70
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Teske, Peter R.
a85ccc74-7aa3-424c-bf48-2caaecbe0e70

Rius, Marc and Teske, Peter R. (2013) Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species Zoological Journal of the Linnean Society, 168, (3), pp. 597-611. (doi:10.1111/zoj.12036).

Record type: Article

Abstract

Cryptic diversity represents a major challenge to the accurate assessment of biodiversity, but the combined use of genetic and morphological analyses has proven to be a powerful approach to detect it. This is especially important for groups for which genetic information is not yet available. Here, we studied the highly conspicuous habitat-forming Pyura stolonifera species complex (Tunicata), which, as has recently been revealed, shows surprising levels of cryptic diversity, but whose systematics and biogeographical patterns in Australasia nonetheless remain poorly understood. We first present detailed taxonomic information of all the species associated with the P.?stolonifera species complex. We then proceed to describe the results of an exhaustive survey that included south-east Australia, Tasmania, and New Zealand. Subsequently, we present morphological and mitonuclear genetic analysis of two unresolved lineages that comprise the species Pyura praeputialis and a species that is formally described here (Pyura doppelgangera sp. nov.). Although the ranges of these two species overlap on mainland Australia, we found no sites at which both species live in sympatry, and there was no morphological or genetic evidence of hybridization. Taken together, the present study illustrates the usefulness of a combined morphogenetic approach in unravelling overlooked marine diversity in a relatively well-studied region.

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More information

e-pub ahead of print date: 8 July 2013
Published date: July 2013
Keywords: adenine nucleotide transporter (ANT) intron, ascidiacea, cytochrome c oxidase subunit I (COI), phylogeny, pyuridae
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 354663
URI: http://eprints.soton.ac.uk/id/eprint/354663
ISSN: 0024-4082
PURE UUID: c2a2f331-f1ca-4250-932f-66deeec8331e

Catalogue record

Date deposited: 17 Jul 2013 09:30
Last modified: 18 Jul 2017 03:54

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Contributors

Author: Marc Rius
Author: Peter R. Teske

University divisions

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