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Phylogenetic study of Gymnodinium dorsalisulcum comb. nov. from tropical Australian coastal waters (Dinophyceae)

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Murray, S and de Salas, MF and Luong-Van, J and Hallegraeff, GM (2007) Phylogenetic study of Gymnodinium dorsalisulcum comb. nov. from tropical Australian coastal waters (Dinophyceae). Phycological Research, 55 (2). pp. 176-184. ISSN 1322-0829

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Abstract

A new species of the dinoflagellate genus Gymnodinium
Stein, previously considered a member of Katodinium
Fott, is characterized from two marine benthic habitats
in tropical northern Australia. Gymnodinium dorsalisulcum
comb. nov. was found to be very abundant at
times, and in culture produced large quantities of
mucus. We analyzed two regions of ribosomal DNA from
this species (partial large subunit and complete small
subunit sequences), using Bayesian analysis and phylogenetic
models appropriate to alignments of ribosomal
RNA genes. We compared it to eight species of the
‘true’ Gymnodinium clade and to other dinoflagellates.
The results show that it is a member of the Gymnodinium
clade, and is closely related to Gymnodinium
impudicum and G. chlorophorum. Katodinium was
originally defined as having cells with an epitheca that
is much larger than the hypotheca. However, this character
is clearly inadequate, and the genus requires a
re-investigation to determine the apomorphies of the
type species.

Item Type: Article
Keywords: Bayesian inference, dinoflagellates, Gymnodinium, Katodinium, phylogeny, protists, ribosomal RNA.
Journal or Publication Title: Phycological Research
Publisher: Australia
Page Range: pp. 176-184
ISSN: 1322-0829
Identification Number - DOI: 10.1111/j.1440-1835.2007.00460.x
Additional Information:

The original publication is available at
http://www.interscience.wiley.com/

Date Deposited: 07 Apr 2008 14:38
Last Modified: 18 Nov 2014 03:35
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