Archaeperidinium saanichi sp. nov: a new species based on morphological variation of cyst and theca within the Archaeperidinium minutum Jörgensen 1912 species complex

Kenneth Neil Mertens; Aika Yamaguchi; Hisae Kawami; Sofia Isabel dos Santos Ribeiro; Brian S. Leander; Andrea Michelle Price; Vera Pospelova; Marianne Ellegaard; Kazumi Matsuoka

doi:10.1016/j.marmicro.2012.08.002

Archaeperidinium saanichi sp. nov

Authors:

Mertens, Kenneth Neil ;
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Ghent University
Yamaguchi, Aika ;
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University of British Columbia
Kawami, Hisae ;
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Nagasaki University
dos Santos Ribeiro, Sofia Isabel ;
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Section of Phycology, Department of Biology, Faculty of Science, Københavns Universitet
Leander, Brian S. ;
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University of British Columbia
Price, Andrea Michelle ;
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University of Victoria
Pospelova, Vera ;
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University of Victoria
Ellegaard, Marianne ;
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0000-0002-6032-3376
Marine Biology, Department of Biology, Faculty of Science, Københavns Universitet
Matsuoka, Kazumi
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Nagasaki University

Subtitle:

a new species based on morphological variation of cyst and theca within the Archaeperidinium minutum Jörgensen 1912 species complex

DOI:

10.1016/j.marmicro.2012.08.002

Abstract:

In this paper we describe a new species, Archaeperidinium saanichi sp. nov. within the Archaeperidinium minutum Jörgensen 1912 species complex. We examined the morphological variation of the cyst and motile stage by incubation experiments from sediment samples collected in coastal British Columbia (Canada), and compared it to closely related species. The theca of A. saanichi is differentiated from related species by overall size, the asymmetry of the intercalary plates and the right-sulcal plate (S.d.) not touching the cingulum. We provide a key to differentiate all closely related species. A. saanichi can be readily distinguished from A. minutum by a distinctively large cyst with a broad 2a type archeopyle and regularly spaced processes with relatively broad bases and aculeate process tips. Molecular phylogenetic analyses of large and small subunit (LSU and SSU) rDNA sequences demonstrated a close affinity of this species to A. minutum; however, the relatively high level of sequence conservation in dinoflagellate rDNA sequences made these particular markers inadequate for distinguishing one species from the other. Sediment-trap data suggest that A. saanichi has a preference for cooler temperatures and lowered salinities.

Type:

Journal article

Language:

English

Published in:

Marine Micropaleontology, 2012, Vol 96–97, p. 48-62

Main Research Area:

Science/technology

Publication Status:

Published

Review type:

Peer Review

Submission year:

2012

Scientific Level:

Scientific

ID:

232113341

<em>Archaeperidinium saanichi</em> sp. nov

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