A new Gambierdiscus species (Dinophyceae) from Rarotonga, Cook Islands: Gambierdiscus cheloniae sp. nov

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

A new Gambierdiscus species (Dinophyceae) from Rarotonga, Cook Islands: Gambierdiscus cheloniae sp. nov

Smith, KF Rhodes, L Verma, A

Curley, BG Harwood, DT Kohli, GS

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

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Publication Type:: Journal Article
Citation:: Harmful Algae, 2016, 60 pp. 45 - 56
Issue Date:: 2016-12-01

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Field	Value	Language
dc.contributor.author	Smith, KF	en_US
dc.contributor.author	Rhodes, L	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	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	2016-10-24	en_US
dc.date.issued	2016-12-01	en_US
dc.identifier.citation	Harmful Algae, 2016, 60 pp. 45 - 56	en_US
dc.identifier.issn	1568-9883	en_US
dc.identifier.uri	http://hdl.handle.net/10453/122953
dc.description.abstract	© 2016 Elsevier B.V. Ciguatera fish poisoning (CFP) has been reported for many years in Rarotonga, Cook Islands, and has had the world's highest reported incidence of this illness for the last 20 years. Following intensive sampling to understand the distribution of the causative organisms of CFP, an undescribed Gambierdiscus species was isolated from the Rarotongan lagoon. Gambierdiscus cheloniae sp. nov. has the common Gambierdiscus Kofoidian plate formula (except for a variability in the number of precingular plates in aberrant cells): Po, 3′, 6″ (7″), 6C?, 6 or 7S, 5′″, 1p and 2″″. The 2′ plate is hatchet shaped and the dorsal end of 1p is pointed and the relatively narrow 1p plate. Morphologically G. cheloniae is similar to the genetically closely related species G. pacificus, G. toxicus and G. belizeanus, although smaller (depth and length) than G. toxicus. The apical pore plate varies from those of G. belizeanus and G. pacificus, which are shorter and narrower, and from G. toxicus, which is larger. G. cheloniae also differs from G. pacificus in the shape of the 2′ plate. The description of this new species is supported by phylogenetic analyses using three different gene regions. G. cheloniae produced the putative maitotoxin-3 analogue, MTX-3, but neither maitotoxin or monitored ciguatoxin. Extracts of G. cheloniae were shown to be highly toxic to mice by intraperitoneal (i.p.) injection, although they were less toxic by gavage. It is possible that this species produces toxins other than putative MTX-3.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT120100704
dc.relation	http://purl.org/au-research/grants/arc/LE140100055
dc.relation.ispartof	Harmful Algae	en_US
dc.relation.isbasedon	10.1016/j.hal.2016.10.006	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	Ciguatera Poisoning	en_US
dc.subject.mesh	Marine Toxins	en_US
dc.subject.mesh	Phylogeny	en_US
dc.subject.mesh	Species Specificity	en_US
dc.subject.mesh	Genes, Protozoan	en_US
dc.subject.mesh	Polynesia	en_US
dc.subject.mesh	Islands	en_US
dc.title	A new Gambierdiscus species (Dinophyceae) from Rarotonga, Cook Islands: Gambierdiscus cheloniae sp. nov	en_US
dc.type	Journal Article
utslib.citation.volume	60	en_US
utslib.for	060405 Gene Expression (incl. Microarray and other genome-wide approaches)	en_US
utslib.for	060409 Molecular Evolution	en_US
utslib.for	060701 Phycology (incl. Marine Grasses)	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	60	en_US

Abstract:

© 2016 Elsevier B.V. Ciguatera fish poisoning (CFP) has been reported for many years in Rarotonga, Cook Islands, and has had the world's highest reported incidence of this illness for the last 20 years. Following intensive sampling to understand the distribution of the causative organisms of CFP, an undescribed Gambierdiscus species was isolated from the Rarotongan lagoon. Gambierdiscus cheloniae sp. nov. has the common Gambierdiscus Kofoidian plate formula (except for a variability in the number of precingular plates in aberrant cells): Po, 3′, 6″ (7″), 6C?, 6 or 7S, 5′″, 1p and 2″″. The 2′ plate is hatchet shaped and the dorsal end of 1p is pointed and the relatively narrow 1p plate. Morphologically G. cheloniae is similar to the genetically closely related species G. pacificus, G. toxicus and G. belizeanus, although smaller (depth and length) than G. toxicus. The apical pore plate varies from those of G. belizeanus and G. pacificus, which are shorter and narrower, and from G. toxicus, which is larger. G. cheloniae also differs from G. pacificus in the shape of the 2′ plate. The description of this new species is supported by phylogenetic analyses using three different gene regions. G. cheloniae produced the putative maitotoxin-3 analogue, MTX-3, but neither maitotoxin or monitored ciguatoxin. Extracts of G. cheloniae were shown to be highly toxic to mice by intraperitoneal (i.p.) injection, although they were less toxic by gavage. It is possible that this species produces toxins other than putative MTX-3.

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http://hdl.handle.net/10453/122953