A new species of Gambierdiscus (Dinophyceae) from the south-west Pacific: Gambierdiscus honu sp. nov.

Rhodes, L; Smith, KF; Verma, A; Curley, BG; Harwood, DT; Murray, S; Kohli, GS; Solomona, D; Rongo, T; Munday, R; Murray, SA

A new species of Gambierdiscus (Dinophyceae) from the south-west Pacific: Gambierdiscus honu sp. nov.

Rhodes, L Smith, KF Verma, A

Curley, BG Harwood, DT Murray, S Kohli, GS

Solomona, D Rongo, T Munday, R Murray, SA

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Publication Type:: Journal Article
Citation:: Harmful Algae, 2017, 65 pp. 61 - 70
Issue Date:: 2017-05-01

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Field	Value	Language
dc.contributor.author	Rhodes, L	en_US
dc.contributor.author	Smith, KF	en_US
dc.contributor.author	Verma, A https://orcid.org/0000-0003-0119-9915	en_US
dc.contributor.author	Curley, BG	en_US
dc.contributor.author	Harwood, DT	en_US
dc.contributor.author	Murray, S	en_US
dc.contributor.author	Kohli, GS https://orcid.org/0000-0002-4578-2355	en_US
dc.contributor.author	Solomona, D	en_US
dc.contributor.author	Rongo, T	en_US
dc.contributor.author	Munday, R	en_US
dc.contributor.author	Murray, SA https://orcid.org/0000-0001-7096-1307	en_US
dc.date.available	2017-04-20	en_US
dc.date.issued	2017-05-01	en_US
dc.identifier.citation	Harmful Algae, 2017, 65 pp. 61 - 70	en_US
dc.identifier.issn	1568-9883	en_US
dc.identifier.uri	http://hdl.handle.net/10453/110568
dc.description.abstract	© 2017 Elsevier B.V. Two isolates of a new tropical, epiphytic dinoflagellate species, Gambierdiscus honu sp. nov., were obtained from macroalgae sampled in Rarotonga, Cook Islands, and from North Meyer Island, Kermadec Islands. Gambierdiscus honu sp. nov. had the common Gambierdiscus Kofoidian plate formula: Po, 3′, 6″, 6C?, 6 or 7S, 5‴, 1p and 2⁗. The characteristic morphological features of this species were its relatively small short dorsoventral length and width and the shape of individual plates, in particular the combination of the hatchet-shaped 2′ and pentagonal 3′ plates and the length to width ratio of the antapical 1p plate. The combination of these characteristics plus the smooth thecal surface and equal sized 1⁗ and 2⁗ plates differentiated this species from other Gambierdiscus species. The phylogenetic analyses supported the unique description. Both isolates of G. honu produced the putative maitotoxin (MTX)-3 analogue, but neither produced ciguatoxin (CTX) or MTX. Extracts of G. honu were shown to be highly toxic to mice by intraperitoneal injection (0.2 mg/kg), although less toxic by gavage. It is possible that toxins other than putative MTX-3 are produced.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT120100704
dc.relation.ispartof	Harmful Algae	en_US
dc.relation.isbasedon	10.1016/j.hal.2017.04.010	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Mice	en_US
dc.subject.mesh	Dinoflagellida	en_US
dc.subject.mesh	Seaweed	en_US
dc.subject.mesh	Ciguatoxins	en_US
dc.subject.mesh	Oxocins	en_US
dc.subject.mesh	Complex Mixtures	en_US
dc.subject.mesh	Marine Toxins	en_US
dc.subject.mesh	Injections, Intraperitoneal	en_US
dc.subject.mesh	Phylogeny	en_US
dc.subject.mesh	Polynesia	en_US
dc.title	A new species of Gambierdiscus (Dinophyceae) from the south-west Pacific: Gambierdiscus honu sp. nov.	en_US
dc.type	Journal Article
utslib.citation.volume	65	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0604 Genetics	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	06 Biological Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	65	en_US

Abstract:

© 2017 Elsevier B.V. Two isolates of a new tropical, epiphytic dinoflagellate species, Gambierdiscus honu sp. nov., were obtained from macroalgae sampled in Rarotonga, Cook Islands, and from North Meyer Island, Kermadec Islands. Gambierdiscus honu sp. nov. had the common Gambierdiscus Kofoidian plate formula: Po, 3′, 6″, 6C?, 6 or 7S, 5‴, 1p and 2⁗. The characteristic morphological features of this species were its relatively small short dorsoventral length and width and the shape of individual plates, in particular the combination of the hatchet-shaped 2′ and pentagonal 3′ plates and the length to width ratio of the antapical 1p plate. The combination of these characteristics plus the smooth thecal surface and equal sized 1⁗ and 2⁗ plates differentiated this species from other Gambierdiscus species. The phylogenetic analyses supported the unique description. Both isolates of G. honu produced the putative maitotoxin (MTX)-3 analogue, but neither produced ciguatoxin (CTX) or MTX. Extracts of G. honu were shown to be highly toxic to mice by intraperitoneal injection (0.2 mg/kg), although less toxic by gavage. It is possible that toxins other than putative MTX-3 are produced.

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http://hdl.handle.net/10453/110568