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Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone

Located from 35° to 45° latitude in both hemispheres, the transition zone is an important region with respect to the planktonic biogeography of the sea. However, to the best of our knowledge, there have been no reports on the existence of a tintinnid community in the transition zone. In this researc...

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Autores principales: Li, Haibo, Xuan, Jun, Wang, Chaofeng, Chen, Zhaohui, Grégori, Gérald, Zhao, Yuan, Zhang, Wuchang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8386027/
https://www.ncbi.nlm.nih.gov/pubmed/34456886
http://dx.doi.org/10.3389/fmicb.2021.697801
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author Li, Haibo
Xuan, Jun
Wang, Chaofeng
Chen, Zhaohui
Grégori, Gérald
Zhao, Yuan
Zhang, Wuchang
author_facet Li, Haibo
Xuan, Jun
Wang, Chaofeng
Chen, Zhaohui
Grégori, Gérald
Zhao, Yuan
Zhang, Wuchang
author_sort Li, Haibo
collection PubMed
description Located from 35° to 45° latitude in both hemispheres, the transition zone is an important region with respect to the planktonic biogeography of the sea. However, to the best of our knowledge, there have been no reports on the existence of a tintinnid community in the transition zone. In this research, tintinnids along two transects across the North Pacific Transition Zone (NPTZ) were investigated in summer 2016 and 2019. Eighty-three oceanic tintinnid species were identified, 41 of which were defined as common oceanic species. The common oceanic species were further divided into five groups: boreal, warm water type I, warm water type II, transition zone, and cosmopolitan species. Undella californiensis and Undella clevei were transition zone species. Other species, such as Amphorides minor, Dadayiella ganymedes, Dictyocysta mitra, Eutintinnus pacificus, Eutintinnus tubulosus, Protorhabdonella simplex, and Steenstrupiella steenstrupii, were the most abundant in the NPTZ but spread over a much larger distribution region. Species richness showed no obvious increase in the NPTZ. Boreal, transition zone, and warm water communities were divided along the two transects. Tintinnid transition zone community mainly distributed in regions with water temperatures between 15 and 20°C. The tintinnid lorica oral diameter size classes were dominated by the 24–28 μm size class in three communities, but the dominance decreased from 66.26% in the boreal community to 48.85% in the transition zone community and then to 22.72% in the warm water community. Our research confirmed the existence of tintinnid transition zone species and community. The abrupt disappearance of warm water type I species below 15°C suggested that this group could be used as an indicator of the northern boundary of the NPTZ.
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spelling pubmed-83860272021-08-26 Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone Li, Haibo Xuan, Jun Wang, Chaofeng Chen, Zhaohui Grégori, Gérald Zhao, Yuan Zhang, Wuchang Front Microbiol Microbiology Located from 35° to 45° latitude in both hemispheres, the transition zone is an important region with respect to the planktonic biogeography of the sea. However, to the best of our knowledge, there have been no reports on the existence of a tintinnid community in the transition zone. In this research, tintinnids along two transects across the North Pacific Transition Zone (NPTZ) were investigated in summer 2016 and 2019. Eighty-three oceanic tintinnid species were identified, 41 of which were defined as common oceanic species. The common oceanic species were further divided into five groups: boreal, warm water type I, warm water type II, transition zone, and cosmopolitan species. Undella californiensis and Undella clevei were transition zone species. Other species, such as Amphorides minor, Dadayiella ganymedes, Dictyocysta mitra, Eutintinnus pacificus, Eutintinnus tubulosus, Protorhabdonella simplex, and Steenstrupiella steenstrupii, were the most abundant in the NPTZ but spread over a much larger distribution region. Species richness showed no obvious increase in the NPTZ. Boreal, transition zone, and warm water communities were divided along the two transects. Tintinnid transition zone community mainly distributed in regions with water temperatures between 15 and 20°C. The tintinnid lorica oral diameter size classes were dominated by the 24–28 μm size class in three communities, but the dominance decreased from 66.26% in the boreal community to 48.85% in the transition zone community and then to 22.72% in the warm water community. Our research confirmed the existence of tintinnid transition zone species and community. The abrupt disappearance of warm water type I species below 15°C suggested that this group could be used as an indicator of the northern boundary of the NPTZ. Frontiers Media S.A. 2021-08-11 /pmc/articles/PMC8386027/ /pubmed/34456886 http://dx.doi.org/10.3389/fmicb.2021.697801 Text en Copyright © 2021 Li, Xuan, Wang, Chen, Grégori, Zhao and Zhang. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Li, Haibo
Xuan, Jun
Wang, Chaofeng
Chen, Zhaohui
Grégori, Gérald
Zhao, Yuan
Zhang, Wuchang
Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title_full Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title_fullStr Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title_full_unstemmed Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title_short Summertime Tintinnid Community in the Surface Waters Across the North Pacific Transition Zone
title_sort summertime tintinnid community in the surface waters across the north pacific transition zone
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8386027/
https://www.ncbi.nlm.nih.gov/pubmed/34456886
http://dx.doi.org/10.3389/fmicb.2021.697801
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