The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)

The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)

Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 9 pages, 4 figures, 1 table

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Main Authors: Bravo, Isabel, Figueroa, Rosa Isabel, Garcés, Esther, Fraga, Santiago, Massanet, Ana
Format: artículo biblioteca
Language:English
Published: Elsevier 2010-02
Subjects:Alexandrium minutum, Ecdysal cysts, Galician rías, Pellicle cysts, Spain, Temporary cysts,
Online Access:http://hdl.handle.net/10261/19732
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spelling dig-icm-es-10261-197322023-01-16T11:27:27Z The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain) Bravo, Isabel Figueroa, Rosa Isabel Garcés, Esther Fraga, Santiago Massanet, Ana Alexandrium minutum Ecdysal cysts Galician rías Pellicle cysts Spain Temporary cysts Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 9 pages, 4 figures, 1 table The terms “temporary”, “pellicle”, and “ecdysal” cyst have been employed arbitrarily in the literature of the dinoflagellate life cycle to describe a non-motile and single-layered-wall stage with no mandatory dormancy period, of asexual or sexual origin. These three terms have been used more or less synonymously, but more specific definitions, taking into account morphological and physiological aspects and their roles in dinoflagellate population dynamics, are still needed. To clarify the current terminology, we examine and discuss the usages and foundations of those terms. The background for this discussion is provided by a comparison of the morphology and germination times of three different types of Alexandrium minutum cysts collected during a seasonal bloom in the Bay of Baiona (NW Spain). The double-walled cysts were similar to the resting cysts reported for this species, but other, thin-walled and thecate cysts were also observed. These latter cyst types needed between 1 and 17 days to germinate and were therefore considered as short-term cysts, in contrast to the 1.5-month dormancy period of resting (hypnozygotic) cysts. Our results showed that the temporal distribution of these short-term cysts during the bloom period followed a pattern very similar to that of vegetative cells. However, resting cysts were only detected at the end of the bloom. In the context of our present knowledge regarding the dormancy and quiescence of dinoflagellate cysts, “temporary” is a very misleading and uncertain term and must be rejected. The term “ecdysal” has been used in reference to thin-walled cysts when ecdysis has been proven; however, ecdysis is not unique to this type of cysts as thick-walled zygotic cysts can be formed thorough ecdysis of a thecate planozygote. In conclusion, based on our current understanding of cysts, the term “pellicle” more appropriately describes single-layered-wall stages The work of E. Garcés was supported by the Ramon y Cajal contract of the Spanish Ministry of Education and Science. R.I. Figueroa's work was supported by a postdoctoral I3P contract of the Spanish Ministry of Education and Science. Financial support was provided by EU Project SEED (GOCE-CT-2005-003875) Peer reviewed 2009-12-21T09:55:34Z 2009-12-21T09:55:34Z 2010-02 artículo http://purl.org/coar/resource_type/c_6501 Deep Sea Research - Part II - Topical Studies in Oceanography 57(3-4): 166–174 (2010) 0967-0645 http://hdl.handle.net/10261/19732 10.1016/j.dsr2.2009.09.003 en https://doi.org/10.1016/j.dsr2.2009.09.003 none 5875 bytes application/pdf Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Alexandrium minutum
Ecdysal cysts
Galician rías
Pellicle cysts
Spain
Temporary cysts
Alexandrium minutum
Ecdysal cysts
Galician rías
Pellicle cysts
Spain
Temporary cysts
spellingShingle Alexandrium minutum
Ecdysal cysts
Galician rías
Pellicle cysts
Spain
Temporary cysts
Alexandrium minutum
Ecdysal cysts
Galician rías
Pellicle cysts
Spain
Temporary cysts
Bravo, Isabel
Figueroa, Rosa Isabel
Garcés, Esther
Fraga, Santiago
Massanet, Ana
The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
description Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 9 pages, 4 figures, 1 table
format artículo
topic_facet Alexandrium minutum
Ecdysal cysts
Galician rías
Pellicle cysts
Spain
Temporary cysts
author Bravo, Isabel
Figueroa, Rosa Isabel
Garcés, Esther
Fraga, Santiago
Massanet, Ana
author_facet Bravo, Isabel
Figueroa, Rosa Isabel
Garcés, Esther
Fraga, Santiago
Massanet, Ana
author_sort Bravo, Isabel
title The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
title_short The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
title_full The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
title_fullStr The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
title_full_unstemmed The intricacies of dinoflagellate pellicle cysts: The example of Alexandrium minutum cysts from a bloom-recurrent area (Bay of Baiona, NW Spain)
title_sort intricacies of dinoflagellate pellicle cysts: the example of alexandrium minutum cysts from a bloom-recurrent area (bay of baiona, nw spain)
publisher Elsevier
publishDate 2010-02
url http://hdl.handle.net/10261/19732
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