The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera
Food supply is one of the main factors driving cold-water corals (CWC) distribution, which often concentrate on ridges where local near-bed turbulence/strong currents enhance food availability. However, efficiency in food capture is strongly dependent on current velocity. Moreover, seawater temperat...
Published in: | Journal of Experimental Marine Biology and Ecology |
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ftcsic:oai:digital.csic.es:10261/317615 2024-02-11T10:05:42+01:00 The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera Gori, Andrea Reynaud, Stéphanie Orejas, Covadonga Ferrier-Pagès, Christine 2015-03-02 http://hdl.handle.net/10508/9358 http://hdl.handle.net/10261/317615 https://doi.org/10.1016/j.jembe.2015.02.004 en eng Centro Oceanográfico de Baleares VoR www.elsevier.com/locate/jembe Journal of Experimental Marine Biology and Ecology, 466. 2015: 92-97 0022-0981 http://hdl.handle.net/10508/9358 http://hdl.handle.net/10261/317615 doi:10.1016/j.jembe.2015.02.004 21043 open Cold-water coral Centro Oceanográfico de Baleares Medio Marino Feeding rate Flow speed Temperature research article 2015 ftcsic https://doi.org/10.1016/j.jembe.2015.02.004 2024-01-16T11:44:47Z Food supply is one of the main factors driving cold-water corals (CWC) distribution, which often concentrate on ridges where local near-bed turbulence/strong currents enhance food availability. However, efficiency in food capture is strongly dependent on current velocity. Moreover, seawater temperature may also affect feeding success, since polyp contraction or nematocyst function could be slower at temperatures belowthe natural thermal range of a species. The non-reef forming CWC Dendrophyllia cornigera occurs in areas at temperatures from 11 to 17 °C, but is apparently absent from most CWC reefs at temperatures constantly below 11 °C. This study thus aimed to assess if a reduction in feeding capacity may contribute to understand the absence of this CWC from strictly cold environments. The efficiency of D. cornigera to capture meso- and macrozooplankton was assessed under different flow speeds (2, 5 and 10 cm s− 1) and temperatures (8, 12, and 16 °C). Flow speeds did not significantly affect the capture of mesozooplankton, whereas capture of macrozooplankton was significantly enhanced with increasing flow speed. Both meso- and macrozooplankton captures were not significantly affected by temperature in D. cornigera. Overall, this CWC species is efficient in capturing zooplankton under a larger range of flow velocities than the widespread CWC Lophelia pertusa, whose capture efficiency significantly decreased from low to high flow speeds. Even if temperature does not directly affect the capture rates of D. cornigera, it may still influence the feeding capacity of this CWC since the capture rates at 8 °C were always in the lowest range of the observed values at each flow speed, and corals maintained at 8 °C required a much longer time to fully expand their polyps once they were placed in the incubation chambers, than corals maintained at 12 and 16 °C. SI Article in Journal/Newspaper Lophelia pertusa Digital.CSIC (Spanish National Research Council) Journal of Experimental Marine Biology and Ecology 466 92 97 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Cold-water coral Centro Oceanográfico de Baleares Medio Marino Feeding rate Flow speed Temperature |
spellingShingle |
Cold-water coral Centro Oceanográfico de Baleares Medio Marino Feeding rate Flow speed Temperature Gori, Andrea Reynaud, Stéphanie Orejas, Covadonga Ferrier-Pagès, Christine The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
topic_facet |
Cold-water coral Centro Oceanográfico de Baleares Medio Marino Feeding rate Flow speed Temperature |
description |
Food supply is one of the main factors driving cold-water corals (CWC) distribution, which often concentrate on ridges where local near-bed turbulence/strong currents enhance food availability. However, efficiency in food capture is strongly dependent on current velocity. Moreover, seawater temperature may also affect feeding success, since polyp contraction or nematocyst function could be slower at temperatures belowthe natural thermal range of a species. The non-reef forming CWC Dendrophyllia cornigera occurs in areas at temperatures from 11 to 17 °C, but is apparently absent from most CWC reefs at temperatures constantly below 11 °C. This study thus aimed to assess if a reduction in feeding capacity may contribute to understand the absence of this CWC from strictly cold environments. The efficiency of D. cornigera to capture meso- and macrozooplankton was assessed under different flow speeds (2, 5 and 10 cm s− 1) and temperatures (8, 12, and 16 °C). Flow speeds did not significantly affect the capture of mesozooplankton, whereas capture of macrozooplankton was significantly enhanced with increasing flow speed. Both meso- and macrozooplankton captures were not significantly affected by temperature in D. cornigera. Overall, this CWC species is efficient in capturing zooplankton under a larger range of flow velocities than the widespread CWC Lophelia pertusa, whose capture efficiency significantly decreased from low to high flow speeds. Even if temperature does not directly affect the capture rates of D. cornigera, it may still influence the feeding capacity of this CWC since the capture rates at 8 °C were always in the lowest range of the observed values at each flow speed, and corals maintained at 8 °C required a much longer time to fully expand their polyps once they were placed in the incubation chambers, than corals maintained at 12 and 16 °C. SI |
format |
Article in Journal/Newspaper |
author |
Gori, Andrea Reynaud, Stéphanie Orejas, Covadonga Ferrier-Pagès, Christine |
author_facet |
Gori, Andrea Reynaud, Stéphanie Orejas, Covadonga Ferrier-Pagès, Christine |
author_sort |
Gori, Andrea |
title |
The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
title_short |
The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
title_full |
The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
title_fullStr |
The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
title_full_unstemmed |
The influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral Dendrophyllia cornigera |
title_sort |
influence of flow velocity and temperature on zooplankton capture rates by the cold-water coral dendrophyllia cornigera |
publishDate |
2015 |
url |
http://hdl.handle.net/10508/9358 http://hdl.handle.net/10261/317615 https://doi.org/10.1016/j.jembe.2015.02.004 |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
Centro Oceanográfico de Baleares VoR www.elsevier.com/locate/jembe Journal of Experimental Marine Biology and Ecology, 466. 2015: 92-97 0022-0981 http://hdl.handle.net/10508/9358 http://hdl.handle.net/10261/317615 doi:10.1016/j.jembe.2015.02.004 21043 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.jembe.2015.02.004 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
466 |
container_start_page |
92 |
op_container_end_page |
97 |
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1790602845112762368 |