Balechina and the new genus Cucumeridinium gen. nov. (Dinophyceae), unarmored dinoflagellates with thick cell coverings

© 2015 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 51(2015), 6 vom: 13. Dez., Seite 1088-105
1. Verfasser: Gómez, Fernando (VerfasserIn)
Weitere Verfasser: López-García, Purificación, Takayama, Haruyoshi, Moreira, David
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Gymnodinium Mediterranean Sea North Pacific Ocean South Atlantic Ocean athecate Dinoflagellata autotomy blue pigmentation intraspecific variability mehr... molecular phylogeny new genus
Beschreibung
Zusammenfassung:© 2015 Phycological Society of America.
The genus Balechina (=subgenus Pachydinium) was established for heterotrophic gymnodinioid dinoflagellates with a thick cell covering. The type species, B. pachydermata (=Gymnodinium pachyderm-atum), showed numerous fine longitudinal striae, whereas B. coerulea (=G. coeruleum) showed ~24 prominent longitudinal surface ridges or furrows and a distinctive blue pigmentation. We have investigated the morphology and molecular phylogeny of these taxa and the species Gymnodinium cucumis, G. lira and G. amphora from the western Mediterranean, Brazil and Japan. Sudden contractions at the cingulum level were seen in B. pachydermata, which also showed a high morphological variability which included morphotypes that have been described as Amphidinium vasculum, G. amphora, G. dogielii and G. gracile sensu Kofoid and Swezy. Molecular phylogeny based on small subunit rRNA gene sequences revealed that Balechina coerulea, G. cucumis and G. lira formed a clade distantly related to the clade of the type species, B. pachydermata, and G. amphora. We propose the new genus Cucumeridinium for the species with longitudinal ridges and a circular apical groove (Cucumeridinium coeruleum comb. nov., C. lira comb. nov. and C. cucumis comb. nov.), and Gymnodinium canus and G. costatum are considered synonyms of C. coeruleum. The genus Balechina remains for the species with a double-layer cell covering, bossed surface with fine striae, and an elongated elliptical apical groove. At present, the genus is monotypic containing only B. pachydermata
Beschreibung:Date Completed 26.07.2016
Date Revised 31.01.2022
published: Print-Electronic
GENBANK: KJ763266, KR139785, KR139786, KR139787, KR139788, KR139789, KR139790, KR139791, KR139792
Citation Status PubMed-not-MEDLINE
ISSN:1529-8817
DOI:10.1111/jpy.12346