Longer is not always better: the influence of beach seine net haul distance on fish catchability
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/5651 http://dx.doi.org/10.1590/S1984-46702014000100005 |
Resumo: | The aim of this study was to compare the influence of different haul distances of a codend beach seine on the catchability of fish in a surf zone. Two different surf zone sites (A and B) at the Cassino Beach (Rio Grande do Sul, Brazil) were sampled at three different distances, parallel to the beach (30, 60, and 90 m). Starting 40 m from the beach line, diagonal distances of approximately 50, 70, and 100 m were swept. The total CPUE and CPUA haul distances are compatible with a declining trend in catch rates with increased haul distance at both sites. However, statistically significant differences were observed only for the short distance CPUA (50 m) in relation to the other haul distances at one of the sites sampled. Two fish size groups were observed (TL 40 and > 40 mm), but only small individuals ( 40 mm) captured in the shorter haul distance at site B showed significant differences in CPUA. This result indicates that size structure for hauls at different distances was equal and that smaller individuals determined the pattern of fish abundance. The net performance indicates that a short haul ( 50 m) is the best strategy to reduce net avoidance and fish escape when using this type of sampling gear. |
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Lombardi, Pryscilla MouraRodrigues, Fábio LameiroVieira Sobrinho, João Paes2015-12-16T22:15:32Z2015-12-16T22:15:32Z2014LOMBARDI, Pryscilla Moura; RODRIGUES, Fábio Lameiro; VIEIRA, João Paes. Longer is not always better: the influence of beach seine net haul distance on fish catchability. Zoologia, Curitiba, v. 31, n. 1, p. 35-41, 2014. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100005&lng=en&nrm=iso&tlng=en>. Acesso em: 16 dez. 2015.1984-46701984-4689http://repositorio.furg.br/handle/1/5651http://dx.doi.org/10.1590/S1984-46702014000100005The aim of this study was to compare the influence of different haul distances of a codend beach seine on the catchability of fish in a surf zone. Two different surf zone sites (A and B) at the Cassino Beach (Rio Grande do Sul, Brazil) were sampled at three different distances, parallel to the beach (30, 60, and 90 m). Starting 40 m from the beach line, diagonal distances of approximately 50, 70, and 100 m were swept. The total CPUE and CPUA haul distances are compatible with a declining trend in catch rates with increased haul distance at both sites. However, statistically significant differences were observed only for the short distance CPUA (50 m) in relation to the other haul distances at one of the sites sampled. Two fish size groups were observed (TL 40 and > 40 mm), but only small individuals ( 40 mm) captured in the shorter haul distance at site B showed significant differences in CPUA. This result indicates that size structure for hauls at different distances was equal and that smaller individuals determined the pattern of fish abundance. The net performance indicates that a short haul ( 50 m) is the best strategy to reduce net avoidance and fish escape when using this type of sampling gear.engFish abundanceFish sizeSampling gearsSurf zoneLonger is not always better: the influence of beach seine net haul distance on fish catchabilityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINALLonger is not always better The influence of beach seine net haul distance on fish catchability.pdfLonger is not always better The influence of beach seine net haul distance on fish catchability.pdfapplication/pdf747524https://repositorio.furg.br/bitstream/1/5651/1/Longer%20is%20not%20always%20better%20The%20influence%20of%20beach%20seine%20net%20haul%20distance%20on%20fish%20catchability.pdf71676675fa9a98839ac445d8c8c3fe91MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.furg.br/bitstream/1/5651/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52open access1/56512015-12-16 20:15:32.608open accessoai:repositorio.furg.br:1/5651Tk9URTogUExBQ0UgWU9VUiBPV04gTElDRU5TRSBIRVJFClRoaXMgc2FtcGxlIGxpY2Vuc2UgaXMgcHJvdmlkZWQgZm9yIGluZm9ybWF0aW9uYWwgcHVycG9zZXMgb25seS4KCk5PTi1FWENMVVNJVkUgRElTVFJJQlVUSU9OIExJQ0VOU0UKCkJ5IHNpZ25pbmcgYW5kIHN1Ym1pdHRpbmcgdGhpcyBsaWNlbnNlLCB5b3UgKHRoZSBhdXRob3Iocykgb3IgY29weXJpZ2h0Cm93bmVyKSBncmFudHMgdG8gRFNwYWNlIFVuaXZlcnNpdHkgKERTVSkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBEU1UgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgRFNVIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgRFNVIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gRFNVLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpEU1Ugd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo=Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2015-12-16T22:15:32Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
title |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
spellingShingle |
Longer is not always better: the influence of beach seine net haul distance on fish catchability Lombardi, Pryscilla Moura Fish abundance Fish size Sampling gears Surf zone |
title_short |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
title_full |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
title_fullStr |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
title_full_unstemmed |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
title_sort |
Longer is not always better: the influence of beach seine net haul distance on fish catchability |
author |
Lombardi, Pryscilla Moura |
author_facet |
Lombardi, Pryscilla Moura Rodrigues, Fábio Lameiro Vieira Sobrinho, João Paes |
author_role |
author |
author2 |
Rodrigues, Fábio Lameiro Vieira Sobrinho, João Paes |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lombardi, Pryscilla Moura Rodrigues, Fábio Lameiro Vieira Sobrinho, João Paes |
dc.subject.por.fl_str_mv |
Fish abundance Fish size Sampling gears Surf zone |
topic |
Fish abundance Fish size Sampling gears Surf zone |
description |
The aim of this study was to compare the influence of different haul distances of a codend beach seine on the catchability of fish in a surf zone. Two different surf zone sites (A and B) at the Cassino Beach (Rio Grande do Sul, Brazil) were sampled at three different distances, parallel to the beach (30, 60, and 90 m). Starting 40 m from the beach line, diagonal distances of approximately 50, 70, and 100 m were swept. The total CPUE and CPUA haul distances are compatible with a declining trend in catch rates with increased haul distance at both sites. However, statistically significant differences were observed only for the short distance CPUA (50 m) in relation to the other haul distances at one of the sites sampled. Two fish size groups were observed (TL 40 and > 40 mm), but only small individuals ( 40 mm) captured in the shorter haul distance at site B showed significant differences in CPUA. This result indicates that size structure for hauls at different distances was equal and that smaller individuals determined the pattern of fish abundance. The net performance indicates that a short haul ( 50 m) is the best strategy to reduce net avoidance and fish escape when using this type of sampling gear. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2015-12-16T22:15:32Z |
dc.date.available.fl_str_mv |
2015-12-16T22:15:32Z |
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.citation.fl_str_mv |
LOMBARDI, Pryscilla Moura; RODRIGUES, Fábio Lameiro; VIEIRA, João Paes. Longer is not always better: the influence of beach seine net haul distance on fish catchability. Zoologia, Curitiba, v. 31, n. 1, p. 35-41, 2014. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100005&lng=en&nrm=iso&tlng=en>. Acesso em: 16 dez. 2015. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/5651 |
dc.identifier.issn.none.fl_str_mv |
1984-4670 1984-4689 |
dc.identifier.doi.pt_BR.fl_str_mv |
http://dx.doi.org/10.1590/S1984-46702014000100005 |
identifier_str_mv |
LOMBARDI, Pryscilla Moura; RODRIGUES, Fábio Lameiro; VIEIRA, João Paes. Longer is not always better: the influence of beach seine net haul distance on fish catchability. Zoologia, Curitiba, v. 31, n. 1, p. 35-41, 2014. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100005&lng=en&nrm=iso&tlng=en>. Acesso em: 16 dez. 2015. 1984-4670 1984-4689 |
url |
http://repositorio.furg.br/handle/1/5651 http://dx.doi.org/10.1590/S1984-46702014000100005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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openAccess |
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