Morphological and phylogenetic data do not support the split of Alexandrium into four genera.

Mertens, KN; Adachi, M; Anderson, DM; Band-Schmidt, CJ; Bravo, I; Brosnahan, ML; Bolch, CJS; Calado, AJ; Carbonell-Moore, MC; Chomérat, N; Elbrächter, M; Figueroa, RI; Fraga, S; Gárate-Lizárraga, I; Garcés, E; Gu, H; Hallegraeff, G; Hess, P; Hoppenrath, M; Horiguchi, T; Iwataki, M; John, U; Kremp, A; Larsen, J; Leaw, CP; Li, Z; Lim, PT; Litaker, W; MacKenzie, L; Masseret, E; Matsuoka, K; Moestrup Ø; Montresor, M; Nagai, S; Nézan, E; Nishimura, T; Okolodkov, YB; Orlova, TY; Reñé, A; Sampedro, N; Satta, CT; Shin, HH; Siano, R; Smith, KF; Steidinger, K; Takano, Y; Tillmann, U; Wolny, J; Yamaguchi, A; Murray, S

Morphological and phylogenetic data do not support the split of Alexandrium into four genera.

Mertens, KN Adachi, M Anderson, DM Band-Schmidt, CJ Bravo, I Brosnahan, ML Bolch, CJS Calado, AJ Carbonell-Moore, MC Chomérat, N Elbrächter, M Figueroa, RI Fraga, S Gárate-Lizárraga, I Garcés, E Gu, H Hallegraeff, G Hess, P Hoppenrath, M Horiguchi, T Iwataki, M John, U Kremp, A Larsen, J Leaw, CP Li, Z Lim, PT Litaker, W MacKenzie, L Masseret, E Matsuoka, K Moestrup Ø Montresor, M Nagai, S Nézan, E Nishimura, T Okolodkov, YB Orlova, TY Reñé, A Sampedro, N Satta, CT Shin, HH Siano, R Smith, KF Steidinger, K Takano, Y Tillmann, U Wolny, J Yamaguchi, A Murray, S

Permalink

Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Harmful algae, 2020, 98
Issue Date:: 2020-09-18

Closed Access

	Filename	Description	Size
	1-s2.0-S1568988320301815-main.pdf	Published version	667.03 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Mertens, KN
dc.contributor.author	Adachi, M
dc.contributor.author	Anderson, DM
dc.contributor.author	Band-Schmidt, CJ
dc.contributor.author	Bravo, I
dc.contributor.author	Brosnahan, ML
dc.contributor.author	Bolch, CJS
dc.contributor.author	Calado, AJ
dc.contributor.author	Carbonell-Moore, MC
dc.contributor.author	Chomérat, N
dc.contributor.author	Elbrächter, M
dc.contributor.author	Figueroa, RI
dc.contributor.author	Fraga, S
dc.contributor.author	Gárate-Lizárraga, I
dc.contributor.author	Garcés, E
dc.contributor.author	Gu, H
dc.contributor.author	Hallegraeff, G
dc.contributor.author	Hess, P
dc.contributor.author	Hoppenrath, M
dc.contributor.author	Horiguchi, T
dc.contributor.author	Iwataki, M
dc.contributor.author	John, U
dc.contributor.author	Kremp, A
dc.contributor.author	Larsen, J
dc.contributor.author	Leaw, CP
dc.contributor.author	Li, Z
dc.contributor.author	Lim, PT
dc.contributor.author	Litaker, W
dc.contributor.author	MacKenzie, L
dc.contributor.author	Masseret, E
dc.contributor.author	Matsuoka, K
dc.contributor.author	Moestrup Ø
dc.contributor.author	Montresor, M
dc.contributor.author	Nagai, S
dc.contributor.author	Nézan, E
dc.contributor.author	Nishimura, T
dc.contributor.author	Okolodkov, YB
dc.contributor.author	Orlova, TY
dc.contributor.author	Reñé, A
dc.contributor.author	Sampedro, N
dc.contributor.author	Satta, CT
dc.contributor.author	Shin, HH
dc.contributor.author	Siano, R
dc.contributor.author	Smith, KF
dc.contributor.author	Steidinger, K
dc.contributor.author	Takano, Y
dc.contributor.author	Tillmann, U
dc.contributor.author	Wolny, J
dc.contributor.author	Yamaguchi, A
dc.contributor.author	Murray, S https://orcid.org/0000-0001-7096-1307
dc.date.accessioned	2021-01-08T00:01:45Z
dc.date.available	2020-09-09
dc.date.available	2021-01-08T00:01:45Z
dc.date.issued	2020-09-18
dc.identifier.citation	Harmful algae, 2020, 98
dc.identifier.issn	1568-9883
dc.identifier.issn	1878-1470
dc.identifier.uri	http://hdl.handle.net/10453/145202
dc.description.abstract	A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, and stated that: "The polyphyly [sic] of Alexandrium is solved with the split into four genera". However, these reintroduced taxa were not based on monophyletic groups. Therefore this work, if accepted, would result in replacing a single paraphyletic taxon with several non-monophyletic ones. The morphological data presented for genus characterization also do not convincingly support taxa delimitations. The combination of weak molecular phylogenetics and the lack of diagnostic traits (i.e., autapomorphies) render the applicability of the concept of limited use. The proposal to split the genus Alexandrium on the basis of our current knowledge is rejected herein. The aim here is not to present an alternative analysis and revision, but to maintain Alexandrium. A better constructed and more phylogenetically accurate revision can and should wait until more complete evidence becomes available and there is a strong reason to revise the genus Alexandrium. The reasons are explained in detail by a review of the available molecular and morphological data for species of the genera Alexandrium and Centrodinium. In addition, cyst morphology and chemotaxonomy are discussed, and the need for integrative taxonomy is highlighted.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER
dc.relation.ispartof	Harmful algae
dc.relation.isbasedon	10.1016/j.hal.2020.101902
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	05 Environmental Sciences, 06 Biological Sciences
dc.subject.classification	Marine Biology & Hydrobiology
dc.title	Morphological and phylogenetic data do not support the split of Alexandrium into four genera.
dc.type	Journal Article
utslib.citation.volume	98
utslib.location.activity	Netherlands
utslib.for	05 Environmental Sciences
utslib.for	06 Biological Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2021-01-08T00:01:31Z
pubs.publication-status	Published
pubs.volume	98

Abstract:

A recently published study analyzed the phylogenetic relationship between the genera Centrodinium and Alexandrium, confirming an earlier publication showing the genus Alexandrium as paraphyletic. This most recent manuscript retained the genus Alexandrium, introduced a new genus Episemicolon, resurrected two genera, Gessnerium and Protogonyaulax, and stated that: "The polyphyly [sic] of Alexandrium is solved with the split into four genera". However, these reintroduced taxa were not based on monophyletic groups. Therefore this work, if accepted, would result in replacing a single paraphyletic taxon with several non-monophyletic ones. The morphological data presented for genus characterization also do not convincingly support taxa delimitations. The combination of weak molecular phylogenetics and the lack of diagnostic traits (i.e., autapomorphies) render the applicability of the concept of limited use. The proposal to split the genus Alexandrium on the basis of our current knowledge is rejected herein. The aim here is not to present an alternative analysis and revision, but to maintain Alexandrium. A better constructed and more phylogenetically accurate revision can and should wait until more complete evidence becomes available and there is a strong reason to revise the genus Alexandrium. The reasons are explained in detail by a review of the available molecular and morphological data for species of the genera Alexandrium and Centrodinium. In addition, cyst morphology and chemotaxonomy are discussed, and the need for integrative taxonomy is highlighted.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/145202