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RESEARCH ARTICLE (Open Access)

Marine planktonic dinophysoid dinoflagellates (order Dinophysales): 60 years of species-level distributions in Australian waters

Gustaaf M. Hallegraeff https://orcid.org/0000-0001-8464-7343 A * , Ruth S. Eriksen https://orcid.org/0000-0002-5184-2465 A B , Claire H. Davies B and Julian Uribe-Palomino C
+ Author Affiliations
- Author Affiliations

A Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Tas. 7001, Australia.

B CSIRO Oceans and Atmosphere, Castray Esplanade, Battery Point, Tas. 7004, Australia.

C CSIRO Oceans and Atmosphere, Queensland BioSciences Precinct (QBP), Saint Lucia, Qld 4067, Australia.

* Correspondence to: gustaaf.hallegraeff@utas.edu.au

Handling Editor: Darren Crayn

Australian Systematic Botany 35(6) 469-500 https://doi.org/10.1071/SB21023
Submitted: 24 June 2021  Accepted: 10 November 2022   Published: 9 December 2022

© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Abstract

We reviewed 9350 Australian species-level records and confirmed 64 species of the marine planktonic dinoflagellate genera Dinophysis Ehrenb. (17 species), Phalacroma F.Stein (12), Metaphalacroma L.S.Tai (1), Pseudophalacroma Jörg. (1), Ornithocercus F.Stein (7), Histioneis F.Stein (11 spp.), Parahistioneis Kof. & Skogsb. (4), Histiophysis (Kof. & Mich.) Kof. & Skogsb. (1), Citharistes F.Stein (2) and Amphisolenia F.Stein (8), from the period 1938–2019. The widespread D. acuminata Clap. & J.Lachm., D. acuta Ehrenb., D. caudata Kent, D. fortii Pavill., and D. tripos Gourret have attracted attention as causative organisms of diarrhetic shellfish poisoning in temperate Australian waters. We discriminate between Dinophysis and Phalacroma. We newly report from Australian waters O. assimilis Jörg., Metaphalacroma skogsbergii L.S.Tai, Parahistioneis pieltainii Osorio-Taffal, Amphisolenia extensa Kof., A. inflata G.Murr. & Whitt. and A. rectangulata Kof. We rediscovered Histiophysis rugosa (Kof. & Mich.) Kof. & Skogsb. here illustrated with two cells from the Coral Sea. The ornate tropical genera Ornithocercus and Histioneis are excellent warm-water indicators, reflecting the southward reach of the East Australian and Leeuwin currents, whereas D. truncata Cleve is a cold-water Subantarctic species.

Keywords: Australia, Australian oceans, diarrhetic shellfish poisoning, Dinophysis, dinophysoid dinoflagellates, Histioneis, Ornithocercus, Phalacroma, tropical indicator species.


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