To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli

THOMAS, NATHAN; Tang, Kam; Coates, Christopher; Tang, Kam W.

doi:10.1080/10236244.2024.2337444

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To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli

NATHAN THOMAS, Kam Tang

, Christopher Coates, Kam W. Tang

Marine and Freshwater Behaviour and Physiology, Pages: 1 - 15

Swansea University Authors: NATHAN THOMAS, Kam Tang , Christopher Coates

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DOI (Published version): 10.1080/10236244.2024.2337444

Abstract

Symsagittifera roscoffensis forms a photosymbiotic relationship with the alga Tetraselmis convolutae within the intertidal zone. Juveniles lack algal symbionts at birth and acquire them from the environment. Requiring light for photosynthesis, they position themselves within the water column while a...

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Published in:	Marine and Freshwater Behaviour and Physiology
ISSN:	1023-6244 1029-0362
Published:	Informa UK Limited 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa65971
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first_indexed	2024-04-04T16:35:45Z
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spelling	v2 65971 2024-04-04 To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli ea301a73007049cf191d0caf171a3b8c NATHAN THOMAS NATHAN THOMAS true false 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false af160934b75bea5b8ba83d68b3d1a003 Christopher Coates Christopher Coates true false 2024-04-04 Symsagittifera roscoffensis forms a photosymbiotic relationship with the alga Tetraselmis convolutae within the intertidal zone. Juveniles lack algal symbionts at birth and acquire them from the environment. Requiring light for photosynthesis, they position themselves within the water column while also balancing the risk of being washed away. To understand their behavioural adaptations, we conducted experiments on their movement in response to algal cues (chemotaxis), light gradients (phototaxis), and mechanical vibrations. Aposymbiotic juveniles showed three times more positivedisplacement towards algae. Adults exhibited positive phototaxis but retreated from high light intensity. When introduced to a column with a light source, the worms remained just below thesurface. In the mechanical vibration experiment, worms only descended when vibrations exceeded a threshold. These findings suggest that S. roscoffensis has chemotactic abilities crucial foracquiring algae and acquires light for photosynthesis while minimizing dispersal risk and photoinhibition, facilitating its life cycle in the intertidal zone. Journal Article Marine and Freshwater Behaviour and Physiology 0 1 15 Informa UK Limited 1023-6244 1029-0362 Photosymbiosis; intertidal; chemotaxis; phototaxis, physical vibration; model organism 9 4 2024 2024-04-09 10.1080/10236244.2024.2337444 COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) Swansea University 2024-06-01T19:17:10.7560742 2024-04-04T17:34:30.8492249 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences NATHAN THOMAS 1 Kam Tang 0000-0001-9427-9564 2 Christopher Coates 3 Kam W. Tang 4 65971__29955__c69ba6d1fabe4ea889d3511f1d16ee8c.pdf MFBP_online.pdf 2024-04-09T09:07:42.6706823 Output 1972807 application/pdf Version of Record true © 2024 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License. true eng http://creativecommons.org/ licenses/by/4.0/
title	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
spellingShingle	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli NATHAN THOMAS Kam Tang Christopher Coates
title_short	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
title_full	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
title_fullStr	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
title_full_unstemmed	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
title_sort	To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli
author_id_str_mv	ea301a73007049cf191d0caf171a3b8c 69af43a3b9da24aef65c5d3a44956fe3 af160934b75bea5b8ba83d68b3d1a003
author_id_fullname_str_mv	ea301a73007049cf191d0caf171a3b8c_*_NATHAN THOMAS 69af43a3b9da24aef65c5d3a44956fe3__Kam Tang af160934b75bea5b8ba83d68b3d1a003_**_Christopher Coates
author	NATHAN THOMAS Kam Tang Christopher Coates
author2	NATHAN THOMAS Kam Tang Christopher Coates Kam W. Tang
format	Journal article
container_title	Marine and Freshwater Behaviour and Physiology
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publishDate	2024
institution	Swansea University
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description	Symsagittifera roscoffensis forms a photosymbiotic relationship with the alga Tetraselmis convolutae within the intertidal zone. Juveniles lack algal symbionts at birth and acquire them from the environment. Requiring light for photosynthesis, they position themselves within the water column while also balancing the risk of being washed away. To understand their behavioural adaptations, we conducted experiments on their movement in response to algal cues (chemotaxis), light gradients (phototaxis), and mechanical vibrations. Aposymbiotic juveniles showed three times more positivedisplacement towards algae. Adults exhibited positive phototaxis but retreated from high light intensity. When introduced to a column with a light source, the worms remained just below thesurface. In the mechanical vibration experiment, worms only descended when vibrations exceeded a threshold. These findings suggest that S. roscoffensis has chemotactic abilities crucial foracquiring algae and acquires light for photosynthesis while minimizing dispersal risk and photoinhibition, facilitating its life cycle in the intertidal zone.
published_date	2024-04-09T19:17:09Z
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To move or not to move: taxis responses of the marine acoel Symsagittifera roscoffensis to different stimuli

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