Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland
The proportions of viable cells ofDinophysisspp. that were paired (dividing) and recently divided during a cell cycle were measured on populations ofD. acutaandD. acuminataobserved off the south coast of Ireland in July 2007 and July 2009. Both species exhibited phased cell division in 2009 with max...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | http://hdl.handle.net/10508/1771 http://hdl.handle.net/10261/324160 https://doi.org/10.1016/j.dsr2.2013.05.031 |
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ftcsic:oai:digital.csic.es:10261/324160 2024-02-11T10:07:02+01:00 Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland Farrell, Hazel Velo-Suárez, Lourdes Reguera, Beatriz Raine, Robin Atlantic Ocean Eastern Atlantic Northeast Atlantic Irish Sea 2014 http://hdl.handle.net/10508/1771 http://hdl.handle.net/10261/324160 https://doi.org/10.1016/j.dsr2.2013.05.031 unknown Centro Oceanográfico de Vigo VoR Deep-Sea Research Part II-Topical Studies In Oceanography, 101. 2014: 249-254 http://hdl.handle.net/10508/1771 http://hdl.handle.net/10261/324160 doi:10.1016/j.dsr2.2013.05.031 5946 open Dinophysis Medio Marino Centro Oceanográfico de Vigo Dinophysis acuminate Dinophysis acuta Specific growth rate Thin layers research article 2014 ftcsic https://doi.org/10.1016/j.dsr2.2013.05.031 2024-01-16T11:47:30Z The proportions of viable cells ofDinophysisspp. that were paired (dividing) and recently divided during a cell cycle were measured on populations ofD. acutaandD. acuminataobserved off the south coast of Ireland in July 2007 and July 2009. Both species exhibited phased cell division in 2009 with maximum frequency of division (fmax) 2 h after sunrise. Different patterns of division (timing offmax) were shown by D. acutain 2007, when the population aggregated in a thin layer was transported by a coastal jet flow. High resolution (decimetre-scale) profiles within the thin layer showed large differences in the vertical distribution of biological properties (feeding status, mortality). Values of the specific growth ratemwere compared to estimates derived in similar fashion from observations onDinophysispopulations elsewhere. Different patterns exhibited by the same species in different regions may be attributed to adaptations to latitudinal differences (length of photoperiod). The question of whether phased cell division always occurs inDinophysispopulations, and the incorporation of the potential specific division rate into models of Dinophysisgrowth are discussed. Comprehensivefield data sets demonstrate the impact of the results on the coherence of Dinophysispopulations during their transport along the Irish coast in jet-likeflows towards sites of intensive shellfish culture Sí Article in Journal/Newspaper Northeast Atlantic Digital.CSIC (Spanish National Research Council) Deep Sea Research Part II: Topical Studies in Oceanography 101 249 254 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Dinophysis Medio Marino Centro Oceanográfico de Vigo Dinophysis acuminate Dinophysis acuta Specific growth rate Thin layers |
spellingShingle |
Dinophysis Medio Marino Centro Oceanográfico de Vigo Dinophysis acuminate Dinophysis acuta Specific growth rate Thin layers Farrell, Hazel Velo-Suárez, Lourdes Reguera, Beatriz Raine, Robin Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
topic_facet |
Dinophysis Medio Marino Centro Oceanográfico de Vigo Dinophysis acuminate Dinophysis acuta Specific growth rate Thin layers |
description |
The proportions of viable cells ofDinophysisspp. that were paired (dividing) and recently divided during a cell cycle were measured on populations ofD. acutaandD. acuminataobserved off the south coast of Ireland in July 2007 and July 2009. Both species exhibited phased cell division in 2009 with maximum frequency of division (fmax) 2 h after sunrise. Different patterns of division (timing offmax) were shown by D. acutain 2007, when the population aggregated in a thin layer was transported by a coastal jet flow. High resolution (decimetre-scale) profiles within the thin layer showed large differences in the vertical distribution of biological properties (feeding status, mortality). Values of the specific growth ratemwere compared to estimates derived in similar fashion from observations onDinophysispopulations elsewhere. Different patterns exhibited by the same species in different regions may be attributed to adaptations to latitudinal differences (length of photoperiod). The question of whether phased cell division always occurs inDinophysispopulations, and the incorporation of the potential specific division rate into models of Dinophysisgrowth are discussed. Comprehensivefield data sets demonstrate the impact of the results on the coherence of Dinophysispopulations during their transport along the Irish coast in jet-likeflows towards sites of intensive shellfish culture Sí |
format |
Article in Journal/Newspaper |
author |
Farrell, Hazel Velo-Suárez, Lourdes Reguera, Beatriz Raine, Robin |
author_facet |
Farrell, Hazel Velo-Suárez, Lourdes Reguera, Beatriz Raine, Robin |
author_sort |
Farrell, Hazel |
title |
Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
title_short |
Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
title_full |
Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
title_fullStr |
Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
title_full_unstemmed |
Phased cell division, specific division rates and other biological observations of Dinophysis populations off the south coast of Ireland |
title_sort |
phased cell division, specific division rates and other biological observations of dinophysis populations off the south coast of ireland |
publishDate |
2014 |
url |
http://hdl.handle.net/10508/1771 http://hdl.handle.net/10261/324160 https://doi.org/10.1016/j.dsr2.2013.05.031 |
op_coverage |
Atlantic Ocean Eastern Atlantic Northeast Atlantic Irish Sea |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Centro Oceanográfico de Vigo VoR Deep-Sea Research Part II-Topical Studies In Oceanography, 101. 2014: 249-254 http://hdl.handle.net/10508/1771 http://hdl.handle.net/10261/324160 doi:10.1016/j.dsr2.2013.05.031 5946 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.dsr2.2013.05.031 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
101 |
container_start_page |
249 |
op_container_end_page |
254 |
_version_ |
1790605149604937728 |