Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/11302 |
Resumo: | Experiments on the selectivity of the clam and razor clam dredges were carried out during July 1995, on the south coast of Portugal. The effects of mesh size and tooth spacing were investigated for both the clam and razor clam dredges. Four different mesh sizes (25, 35, 40, and 50 mm) and three different tooth spacings (15, 20, and 25 mm for the clams Spisula solida and Venus striatula, and 10, 15, and 20 mm for the razor clam Ensis siliqua) were used. The results indicated that the tooth spacing did not have an effect on the selectivity. The best mesh sizes were 40 mm for the clam fishery (S. solida and V. striatula) and 66 for the razor clam (E. siliqua). These mesh sizes will result in considerable reduction in the numbers of small- and medium-sized individuals in the catch. (C) 1999 International Council for the Exploration of the Sea. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredgeShellExperiments on the selectivity of the clam and razor clam dredges were carried out during July 1995, on the south coast of Portugal. The effects of mesh size and tooth spacing were investigated for both the clam and razor clam dredges. Four different mesh sizes (25, 35, 40, and 50 mm) and three different tooth spacings (15, 20, and 25 mm for the clams Spisula solida and Venus striatula, and 10, 15, and 20 mm for the razor clam Ensis siliqua) were used. The results indicated that the tooth spacing did not have an effect on the selectivity. The best mesh sizes were 40 mm for the clam fishery (S. solida and V. striatula) and 66 for the razor clam (E. siliqua). These mesh sizes will result in considerable reduction in the numbers of small- and medium-sized individuals in the catch. (C) 1999 International Council for the Exploration of the Sea.Academic PressSapientiaGaspar, MiguelCastro, MargaridaMonteiro, C. C.2018-12-07T14:53:00Z1999-021999-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11302eng1054-313910.1006/jmsc.1998.0423info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:23:04ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
title |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
spellingShingle |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge Gaspar, Miguel Shell |
title_short |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
title_full |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
title_fullStr |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
title_full_unstemmed |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
title_sort |
Effect of tooth spacing and mesh size on the catch of the Portuguese clam and razor clam dredge |
author |
Gaspar, Miguel |
author_facet |
Gaspar, Miguel Castro, Margarida Monteiro, C. C. |
author_role |
author |
author2 |
Castro, Margarida Monteiro, C. C. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Gaspar, Miguel Castro, Margarida Monteiro, C. C. |
dc.subject.por.fl_str_mv |
Shell |
topic |
Shell |
description |
Experiments on the selectivity of the clam and razor clam dredges were carried out during July 1995, on the south coast of Portugal. The effects of mesh size and tooth spacing were investigated for both the clam and razor clam dredges. Four different mesh sizes (25, 35, 40, and 50 mm) and three different tooth spacings (15, 20, and 25 mm for the clams Spisula solida and Venus striatula, and 10, 15, and 20 mm for the razor clam Ensis siliqua) were used. The results indicated that the tooth spacing did not have an effect on the selectivity. The best mesh sizes were 40 mm for the clam fishery (S. solida and V. striatula) and 66 for the razor clam (E. siliqua). These mesh sizes will result in considerable reduction in the numbers of small- and medium-sized individuals in the catch. (C) 1999 International Council for the Exploration of the Sea. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-02 1999-02-01T00:00:00Z 2018-12-07T14:53:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/11302 |
url |
http://hdl.handle.net/10400.1/11302 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1054-3139 10.1006/jmsc.1998.0423 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press |
publisher.none.fl_str_mv |
Academic Press |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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1777303908385816576 |