Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2736 |
Resumo: | Several aspects of the population structure of Serrasalmus spilopleura Kner, 1860, from the Extremoz Lake (5o 42’76” S and 35o 17’ 69” W), state of Rio Grande do Norte, are approached. From July 1998 to April 1999, 337 specimens were collected in each phase of the moon, with 5 gill-nets, knots spaces varying between 2,0 to 5,0 cm in four distinct points, with collection every five hours, timetable (17h00 - 22h00). The sexual proportion was 1:1, with a slight decrease of females during the winter; length classes during the entire period under analysis ranged between 6,0 and 17,0 cm, with a predominance of 9.0- 10,0 cm in all seasons; spring was the only exception since variation ranged between 11,0 and 12,0 cm. No significant relationship between total weight and total length for the sex groups was found. The value of θ = 3,2493 shows a positive allometric growth for the species |
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Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, BrazilEstrutura populacional de Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) da lagoa de Extremoz, Estado do Rio Grande do Norte, BrasilSerrasalmus spilopleuralagoa de Extremozestrutura populacionalBrasil2.00.00.00-6 Ciências BiológicasSeveral aspects of the population structure of Serrasalmus spilopleura Kner, 1860, from the Extremoz Lake (5o 42’76” S and 35o 17’ 69” W), state of Rio Grande do Norte, are approached. From July 1998 to April 1999, 337 specimens were collected in each phase of the moon, with 5 gill-nets, knots spaces varying between 2,0 to 5,0 cm in four distinct points, with collection every five hours, timetable (17h00 - 22h00). The sexual proportion was 1:1, with a slight decrease of females during the winter; length classes during the entire period under analysis ranged between 6,0 and 17,0 cm, with a predominance of 9.0- 10,0 cm in all seasons; spring was the only exception since variation ranged between 11,0 and 12,0 cm. No significant relationship between total weight and total length for the sex groups was found. The value of θ = 3,2493 shows a positive allometric growth for the speciesNo presente estudo são abordados aspectos da estrutura populacional de Serrasalmus spilopleura (Kner, 1860) da lagoa de Extremoz (5o 42’76” S e 35o17’69” W), Rio Grande do Norte. No período de julho/98 a abril/99, foi coletado um total de 337 exemplares, considerando-se cada uma das fases da lua, utilizando-se 5 redes de espera com malhas variando entre 2,0 e 5,0 cm entre nós opostos em quatro pontos distintos, com despesca a cada 5 horas (17h00-22h00). A proporção sexual foi de 1:1, com leve declínio de fêmeas no inverno; as classes de comprimento total para todo o período de estudo tiveram uma amplitude de variação entre 6,0 e 17,0 cm, com predomínio entre 9,0 e 10,0 cm para todas as estações, à exceção da primavera, que apresentou uma variação entre 11,0 e 12,0 cm. Não foi constatada diferença significativa para a relação peso total/comprimento total para sexos agrupados. E o valor θ=3,2493 evidencia um crescimento do tipo alométrico positivo para a espécieUniversidade Estadual De Maringá2008-05-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/273610.4025/actascibiolsci.v23i0.2736Acta Scientiarum. Biological Sciences; Vol 23 (2001); 409-414Acta Scientiarum. Biological Sciences; v. 23 (2001); 409-4141807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2736/2011Raposo, Ricardo de Meiroz GriloGurgel, Helio de Castro Bezerrainfo:eu-repo/semantics/openAccess2022-11-23T17:33:29Zoai:periodicos.uem.br/ojs:article/2736Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:29Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil Estrutura populacional de Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) da lagoa de Extremoz, Estado do Rio Grande do Norte, Brasil |
title |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
spellingShingle |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil Raposo, Ricardo de Meiroz Grilo Serrasalmus spilopleura lagoa de Extremoz estrutura populacional Brasil 2.00.00.00-6 Ciências Biológicas |
title_short |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
title_full |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
title_fullStr |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
title_full_unstemmed |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
title_sort |
Population structure of Serrasalmus spilopleura Kner, 1860 (Pisces, Serrasalmidae) from the Extremoz Lake, state of Rio Grande do Norte, Brazil |
author |
Raposo, Ricardo de Meiroz Grilo |
author_facet |
Raposo, Ricardo de Meiroz Grilo Gurgel, Helio de Castro Bezerra |
author_role |
author |
author2 |
Gurgel, Helio de Castro Bezerra |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Raposo, Ricardo de Meiroz Grilo Gurgel, Helio de Castro Bezerra |
dc.subject.por.fl_str_mv |
Serrasalmus spilopleura lagoa de Extremoz estrutura populacional Brasil 2.00.00.00-6 Ciências Biológicas |
topic |
Serrasalmus spilopleura lagoa de Extremoz estrutura populacional Brasil 2.00.00.00-6 Ciências Biológicas |
description |
Several aspects of the population structure of Serrasalmus spilopleura Kner, 1860, from the Extremoz Lake (5o 42’76” S and 35o 17’ 69” W), state of Rio Grande do Norte, are approached. From July 1998 to April 1999, 337 specimens were collected in each phase of the moon, with 5 gill-nets, knots spaces varying between 2,0 to 5,0 cm in four distinct points, with collection every five hours, timetable (17h00 - 22h00). The sexual proportion was 1:1, with a slight decrease of females during the winter; length classes during the entire period under analysis ranged between 6,0 and 17,0 cm, with a predominance of 9.0- 10,0 cm in all seasons; spring was the only exception since variation ranged between 11,0 and 12,0 cm. No significant relationship between total weight and total length for the sex groups was found. The value of θ = 3,2493 shows a positive allometric growth for the species |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-05-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2736 10.4025/actascibiolsci.v23i0.2736 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2736 |
identifier_str_mv |
10.4025/actascibiolsci.v23i0.2736 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2736/2011 |
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 |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 23 (2001); 409-414 Acta Scientiarum. Biological Sciences; v. 23 (2001); 409-414 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
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1799317390972944384 |