Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881

Detalhes bibliográficos
Autor(a) principal: Ghiraldelli, Luciana
Data de Publicação: 2008
Outros Autores: Machado, Cláudia, Fracalossi, Débora Machado, Filho, Evoy Zaniboni
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/881
Resumo: The study characterized the gonadal development of jundiá from approximately 8 g until gonadal maturation, to provide further knowledge for farming jundiá in Southern Brazil. Jundiá fingerlings (average weight 8.00 ± 3.73 g) were stocked in three ponds at 0.6 fish m-2. Fourteen fish were sampled each month from September 2001 to October 2002. Gonadal maturation stages were characterized macroscopically, and samples of ovaries and testicles were fixed in 4-%-buffered formalin for histological examination. One hundred and eighteen fish were analyzed: 60 males e 58 females. Jundiá males matured earlier than females. Testicles and ovaries presented similar morphology to other Siluriformes species. Gonads were classified in four development phases of the ovarian follicle, according to histology: immature, initial maturation, final maturation and mature. The gonadosomatic index varied from 0.29 to 9.16 for males and from 0.11 to 13.03 for females. Mature individuals were observed during summer (December/2001 and January/2002), fall (April and May/2002) and spring (September and October/2002), following the increase in water temperature.
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spelling Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881Desenvolvimento gonadal do jundiá, Rhamdia quelen (Teleostei, Siluriformes), em viveiros de terra, na região sul do Brasil - DOI: 10.4025/actascibiolsci.v29i4.881jundiáreproduçãoRhamdia quelenpisciculturadesenvolvimento gonadal2.01.00.00-0 Biologia GeralThe study characterized the gonadal development of jundiá from approximately 8 g until gonadal maturation, to provide further knowledge for farming jundiá in Southern Brazil. Jundiá fingerlings (average weight 8.00 ± 3.73 g) were stocked in three ponds at 0.6 fish m-2. Fourteen fish were sampled each month from September 2001 to October 2002. Gonadal maturation stages were characterized macroscopically, and samples of ovaries and testicles were fixed in 4-%-buffered formalin for histological examination. One hundred and eighteen fish were analyzed: 60 males e 58 females. Jundiá males matured earlier than females. Testicles and ovaries presented similar morphology to other Siluriformes species. Gonads were classified in four development phases of the ovarian follicle, according to histology: immature, initial maturation, final maturation and mature. The gonadosomatic index varied from 0.29 to 9.16 for males and from 0.11 to 13.03 for females. Mature individuals were observed during summer (December/2001 and January/2002), fall (April and May/2002) and spring (September and October/2002), following the increase in water temperature.O presente estudo caracterizou o desenvolvimento gonadal de jundiá até a maturação sexual, quando cultivados em viveiros de terra, visando subsidiar o desenvolvimento de tecnologia de cultivo para esta espécie na região sul do Brasil. Alevinos de jundiá (peso médio 8 ± 3,73 g) foram estocados em três viveiros, na densidade de 0,6 indivíduos m-2. Catorze indivíduos foram amostrados mensalmente, de setembro de 2001 a outubro de 2002. Os estádios de maturação gonadal foram caracterizados macroscopicamente, e fragmentos de ovários e testículos de alguns exemplares foram fixados em formalina 4% para análise histológica. Foram analisados 118 exemplares: 60 machos e 58 fêmeas. Os machos apresentaram atividade reprodutiva precoce, quando comparados às fêmeas. Testículos e ovários apresentaram morfologia similar a de outras espécies de Siluriformes. De acordo com a análise microscópica, as gônadas foram classificadas em quatro estádios de desenvolvimento: imaturo, em maturação inicial, em maturação final e maduro. A relação gonadossomática variou de 0,29 a 9,16 para os machos e de 0,11 a 13,03 para as fêmeas. Indivíduos maduros foram observados nos meses de verão (dezembro/2001 e janeiro/2002), outono (abril e maio/2002) e primavera (setembro e outubro/2002), acompanhando o aumento de temperatura.Universidade Estadual De Maringá2008-02-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/88110.4025/actascibiolsci.v29i4.881Acta Scientiarum. Biological Sciences; Vol 29 No 4 (2007); 349-356Acta Scientiarum. Biological Sciences; v. 29 n. 4 (2007); 349-3561807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/881/421Ghiraldelli, LucianaMachado, CláudiaFracalossi, Débora MachadoFilho, Evoy Zaniboniinfo:eu-repo/semantics/openAccess2022-11-23T17:33:01Zoai:periodicos.uem.br/ojs:article/881Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:01Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
Desenvolvimento gonadal do jundiá, Rhamdia quelen (Teleostei, Siluriformes), em viveiros de terra, na região sul do Brasil - DOI: 10.4025/actascibiolsci.v29i4.881
title Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
spellingShingle Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
Ghiraldelli, Luciana
jundiá
reprodução
Rhamdia quelen
piscicultura
desenvolvimento gonadal
2.01.00.00-0 Biologia Geral
title_short Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
title_full Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
title_fullStr Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
title_full_unstemmed Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
title_sort Gonadal development of jundiá, Rhamdia quelen(Teleostei, Siluriformes), in earthen ponds in southern Brazil - DOI: 10.4025/actascibiolsci.v29i4.881
author Ghiraldelli, Luciana
author_facet Ghiraldelli, Luciana
Machado, Cláudia
Fracalossi, Débora Machado
Filho, Evoy Zaniboni
author_role author
author2 Machado, Cláudia
Fracalossi, Débora Machado
Filho, Evoy Zaniboni
author2_role author
author
author
dc.contributor.author.fl_str_mv Ghiraldelli, Luciana
Machado, Cláudia
Fracalossi, Débora Machado
Filho, Evoy Zaniboni
dc.subject.por.fl_str_mv jundiá
reprodução
Rhamdia quelen
piscicultura
desenvolvimento gonadal
2.01.00.00-0 Biologia Geral
topic jundiá
reprodução
Rhamdia quelen
piscicultura
desenvolvimento gonadal
2.01.00.00-0 Biologia Geral
description The study characterized the gonadal development of jundiá from approximately 8 g until gonadal maturation, to provide further knowledge for farming jundiá in Southern Brazil. Jundiá fingerlings (average weight 8.00 ± 3.73 g) were stocked in three ponds at 0.6 fish m-2. Fourteen fish were sampled each month from September 2001 to October 2002. Gonadal maturation stages were characterized macroscopically, and samples of ovaries and testicles were fixed in 4-%-buffered formalin for histological examination. One hundred and eighteen fish were analyzed: 60 males e 58 females. Jundiá males matured earlier than females. Testicles and ovaries presented similar morphology to other Siluriformes species. Gonads were classified in four development phases of the ovarian follicle, according to histology: immature, initial maturation, final maturation and mature. The gonadosomatic index varied from 0.29 to 9.16 for males and from 0.11 to 13.03 for females. Mature individuals were observed during summer (December/2001 and January/2002), fall (April and May/2002) and spring (September and October/2002), following the increase in water temperature.
publishDate 2008
dc.date.none.fl_str_mv 2008-02-21
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/881
10.4025/actascibiolsci.v29i4.881
url http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/881
identifier_str_mv 10.4025/actascibiolsci.v29i4.881
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/881/421
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 29 No 4 (2007); 349-356
Acta Scientiarum. Biological Sciences; v. 29 n. 4 (2007); 349-356
1807-863X
1679-9283
reponame:Acta Scientiarum Biological Sciences
instname:Universidade Estadual de Maringá (UEM)
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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)
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