Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging
The smooth clam Callista chione is exploited by a fleet of dredgers along the southwestern coast of Portugal and suffers from a high incidence of shell damage. The force required to break C. chione shells in relation to fishing impacts and dredge damage is quantified. Fishing trials and shell-streng...
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Oxford University Press
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Online Access: | http://hdl.handle.net/10400.1/11383 https://doi.org/10.1093/icesjms/fsq149 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/11383 2023-05-15T15:22:33+02:00 Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging Vasconcelos, Paulo Morgado-Andre, Antonio Morgado-Andre, Carlos Gaspar, Miguel 2011-01 http://hdl.handle.net/10400.1/11383 https://doi.org/10.1093/icesjms/fsq149 eng eng Oxford University Press 1054-3139 http://hdl.handle.net/10400.1/11383 doi:10.1093/icesjms/fsq149 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY Arctica-islandica Gastropod shells Razor clams Predation Mussel L Population Crab Sea Portugal article 2011 ftunivalgarve https://doi.org/10.1093/icesjms/fsq149 2022-05-30T08:48:17Z The smooth clam Callista chione is exploited by a fleet of dredgers along the southwestern coast of Portugal and suffers from a high incidence of shell damage. The force required to break C. chione shells in relation to fishing impacts and dredge damage is quantified. Fishing trials and shell-strength measurements (compression and compaction experiments) were performed to determine whether shell damage was attributable to the direct impact of the dredge teeth or to sediment compaction. A three-dimensional model of C. chione was subjected to simulated force by the finite element method. Analyses of damage areas and breakage patterns revealed two groups of samples, one containing the samples from compression experiments and another with the samples from dredging and compaction experiments, suggesting that most shell damage was attributable to compaction within the sediment. Information is provided to help improve the design of bivalve dredges, by increasing both length and angle of the dredge teeth, which would reduce the compaction force and distribute it differentially within the sediment, forcing upward movement of the bivalves. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Arctica islandica Universidade do Algarve: Sapienta ICES Journal of Marine Science 68 1 32 42 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
Arctica-islandica Gastropod shells Razor clams Predation Mussel L Population Crab Sea Portugal |
spellingShingle |
Arctica-islandica Gastropod shells Razor clams Predation Mussel L Population Crab Sea Portugal Vasconcelos, Paulo Morgado-Andre, Antonio Morgado-Andre, Carlos Gaspar, Miguel Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
topic_facet |
Arctica-islandica Gastropod shells Razor clams Predation Mussel L Population Crab Sea Portugal |
description |
The smooth clam Callista chione is exploited by a fleet of dredgers along the southwestern coast of Portugal and suffers from a high incidence of shell damage. The force required to break C. chione shells in relation to fishing impacts and dredge damage is quantified. Fishing trials and shell-strength measurements (compression and compaction experiments) were performed to determine whether shell damage was attributable to the direct impact of the dredge teeth or to sediment compaction. A three-dimensional model of C. chione was subjected to simulated force by the finite element method. Analyses of damage areas and breakage patterns revealed two groups of samples, one containing the samples from compression experiments and another with the samples from dredging and compaction experiments, suggesting that most shell damage was attributable to compaction within the sediment. Information is provided to help improve the design of bivalve dredges, by increasing both length and angle of the dredge teeth, which would reduce the compaction force and distribute it differentially within the sediment, forcing upward movement of the bivalves. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Vasconcelos, Paulo Morgado-Andre, Antonio Morgado-Andre, Carlos Gaspar, Miguel |
author_facet |
Vasconcelos, Paulo Morgado-Andre, Antonio Morgado-Andre, Carlos Gaspar, Miguel |
author_sort |
Vasconcelos, Paulo |
title |
Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
title_short |
Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
title_full |
Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
title_fullStr |
Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
title_full_unstemmed |
Shell strength and fishing damage to the smooth clam (Callista chione): simulating impacts caused by bivalve dredging |
title_sort |
shell strength and fishing damage to the smooth clam (callista chione): simulating impacts caused by bivalve dredging |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://hdl.handle.net/10400.1/11383 https://doi.org/10.1093/icesjms/fsq149 |
genre |
Arctica islandica |
genre_facet |
Arctica islandica |
op_relation |
1054-3139 http://hdl.handle.net/10400.1/11383 doi:10.1093/icesjms/fsq149 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/icesjms/fsq149 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
1 |
container_start_page |
32 |
op_container_end_page |
42 |
_version_ |
1766353203837796352 |