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Reversible colony formation and the associated costs in Scenedesmus obliquus

Dania Albini, Mike Fowler Orcid Logo, Carole Llewellyn, Kam Tang Orcid Logo

Journal of Plankton Research, Volume: 41, Issue: 4, Pages: 419 - 429

Swansea University Authors: Dania Albini, Mike Fowler Orcid Logo, Carole Llewellyn, Kam Tang Orcid Logo

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DOI (Published version): 10.1093/plankt/fbz032

Abstract

Grazer-induced colony formation is a common inducible defense strategy in microalgae against grazers, but the associated costs and reversibility of the colonies are rarely examined. Through experiments we showed that Scenedesmus obliquus formed chained colonies in the presence of a predator, but rev...

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Published in: Journal of Plankton Research
ISSN: 0142-7873 1464-3774
Published: Oxford University Press (OUP) 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51295
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first_indexed 2019-08-01T22:29:31Z
last_indexed 2019-08-09T16:31:55Z
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spelling 2019-08-07T12:21:13.8713007 v2 51295 2019-08-01 Reversible colony formation and the associated costs in Scenedesmus obliquus 3fe525160590b6fadd781b09bed48bff Dania Albini Dania Albini true false a3a29027498d4b43a3f082a0a5ba16b4 0000-0003-1544-0407 Mike Fowler Mike Fowler true false bcd94bda79ebf4c2c82d82dfb027a140 Carole Llewellyn Carole Llewellyn true false 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2019-08-01 Grazer-induced colony formation is a common inducible defense strategy in microalgae against grazers, but the associated costs and reversibility of the colonies are rarely examined. Through experiments we showed that Scenedesmus obliquus formed chained colonies in the presence of a predator, but reverted to single cells after the removal of the predator. The stress indicators astaxanthin esters were present in the algal populations exposed to grazers. There were significant costs associated with colony formation in terms of lower population growth rate, lower photosystem II efficiency and lower cellular chlorophyll a content. Under these substantial costs the defense must be switched off and the colonies revert to single cells when the predation risk disappears. Journal Article Journal of Plankton Research 41 4 419 429 Oxford University Press (OUP) 0142-7873 1464-3774 colony formation; inducible defense; Scenedesmus; Daphnia; reversibility; costs; quantum yield; chlorophyll a; growth rate 30 7 2019 2019-07-30 10.1093/plankt/fbz032 COLLEGE NANME COLLEGE CODE Swansea University 2019-08-07T12:21:13.8713007 2019-08-01T16:43:41.7814130 Dania Albini 1 Mike Fowler 0000-0003-1544-0407 2 Carole Llewellyn 3 Kam Tang 0000-0001-9427-9564 4 0051295-07082019121949.pdf 51295.pdf 2019-08-07T12:19:49.5830000 Output 716111 application/pdf Accepted Manuscript true 2020-07-30T00:00:00.0000000 true eng
title Reversible colony formation and the associated costs in Scenedesmus obliquus
spellingShingle Reversible colony formation and the associated costs in Scenedesmus obliquus
Dania Albini
Mike Fowler
Carole Llewellyn
Kam Tang
title_short Reversible colony formation and the associated costs in Scenedesmus obliquus
title_full Reversible colony formation and the associated costs in Scenedesmus obliquus
title_fullStr Reversible colony formation and the associated costs in Scenedesmus obliquus
title_full_unstemmed Reversible colony formation and the associated costs in Scenedesmus obliquus
title_sort Reversible colony formation and the associated costs in Scenedesmus obliquus
author_id_str_mv 3fe525160590b6fadd781b09bed48bff
a3a29027498d4b43a3f082a0a5ba16b4
bcd94bda79ebf4c2c82d82dfb027a140
69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 3fe525160590b6fadd781b09bed48bff_***_Dania Albini
a3a29027498d4b43a3f082a0a5ba16b4_***_Mike Fowler
bcd94bda79ebf4c2c82d82dfb027a140_***_Carole Llewellyn
69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Dania Albini
Mike Fowler
Carole Llewellyn
Kam Tang
author2 Dania Albini
Mike Fowler
Carole Llewellyn
Kam Tang
format Journal article
container_title Journal of Plankton Research
container_volume 41
container_issue 4
container_start_page 419
publishDate 2019
institution Swansea University
issn 0142-7873
1464-3774
doi_str_mv 10.1093/plankt/fbz032
publisher Oxford University Press (OUP)
document_store_str 1
active_str 0
description Grazer-induced colony formation is a common inducible defense strategy in microalgae against grazers, but the associated costs and reversibility of the colonies are rarely examined. Through experiments we showed that Scenedesmus obliquus formed chained colonies in the presence of a predator, but reverted to single cells after the removal of the predator. The stress indicators astaxanthin esters were present in the algal populations exposed to grazers. There were significant costs associated with colony formation in terms of lower population growth rate, lower photosystem II efficiency and lower cellular chlorophyll a content. Under these substantial costs the defense must be switched off and the colonies revert to single cells when the predation risk disappears.
published_date 2019-07-30T04:03:08Z
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score 11.013686

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