Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/1235 |
Resumo: | Specimens of Atlantoraja castelnaui were obtained from seven commercial fishing vessels operating in southeastern Brazilian waters, from March 2005 to April 2006. A total of 53 males, ranging from 17.9 to 111.0 cm in total length (TL), were examined. Based on analyses of the clasper gland and clasper length, testes weight, testicular lobes diameter and alar thorns, size at maturity was estimated to be 91.0 cm TL. Fifty-four females were examined ranging from 17.4 to 116.0 cm TL. According to observations of uterus width, oviducal gland width, ovary weight and diameter of the largest vitellogenic follicle, size at maturity was estimated as 105.0cm TL. Vitellogenesis would start when follicles attain a diameter of 1.0 cm, and ovulation when attaining 3.0 cm of diameter. The maximum number of vitellogenic follicles of this species was 20. In spite of the fact that A. castelnaui is an oviparous species, and therefore, with a relatively high fecundity when compared with other elasmobranchs, its big size makes it an extremely vulnerable species to fishery pressure, being even already considered as an endangered one. Because of that, the knowledge of its reproductive parameters will lead to an adequate management of the stocks. |
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Oddone, Maria CristinaAmorim, Alberto Ferreira deMancini, Patricia2011-11-01T15:33:13Z2011-11-01T15:33:13Z2008ODDONE, M. C. ; AMORIM, A. F. ; MANCINI, P. L. . Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae) in southeastern Brazilian waters. Revista de Biología Marina y Oceanografía , v. 43, p. 327-334, 2008. Disponível em: <http://www.scielo.cl/pdf/revbiolmar/v43n2/art10.pdf>. Acesso em: 31 Out. 2011.0718-1957http://repositorio.furg.br/handle/1/1235Specimens of Atlantoraja castelnaui were obtained from seven commercial fishing vessels operating in southeastern Brazilian waters, from March 2005 to April 2006. A total of 53 males, ranging from 17.9 to 111.0 cm in total length (TL), were examined. Based on analyses of the clasper gland and clasper length, testes weight, testicular lobes diameter and alar thorns, size at maturity was estimated to be 91.0 cm TL. Fifty-four females were examined ranging from 17.4 to 116.0 cm TL. According to observations of uterus width, oviducal gland width, ovary weight and diameter of the largest vitellogenic follicle, size at maturity was estimated as 105.0cm TL. Vitellogenesis would start when follicles attain a diameter of 1.0 cm, and ovulation when attaining 3.0 cm of diameter. The maximum number of vitellogenic follicles of this species was 20. In spite of the fact that A. castelnaui is an oviparous species, and therefore, with a relatively high fecundity when compared with other elasmobranchs, its big size makes it an extremely vulnerable species to fishery pressure, being even already considered as an endangered one. Because of that, the knowledge of its reproductive parameters will lead to an adequate management of the stocks.Especimenes de Atlantoraja castelnaui fueron obtenidos a través de siete barcos de pesca comercial operando en aguas del sudeste brasilero, desde marzo de 2005 hasta abril de 2006. Un total de 53 machos fueron capturados y analizados, con longitudes totales comprendidas entre 17,9 y 111,0 cm. De acuerdo con el análisis de la longitud del clásper y de la glándula del clásper, peso de los testículos, diámetro de los lóbulos testiculares y espinas alares, el tamaño de primera madurez sexual fue estimado en 91,0 cm. Cincuenta y cuatro hembras de entre 17,4 y 116,0 cm de longitud total fueron capturadas. De acuerdo con las observaciones del ancho del útero y de la glándula oviductal, del peso de los ovarios y del diámetro del mayor folículo vitelogénico, el tamaño de primera madurez sexual fue estimado en 105,0 cm. La vitelogénesis comenzaría cuando los folículos alcanzan un tamaño de 1,0 cm y la ovulación cuando alcanzan 3,0 cm de diámetro. El número máximo de folículos vitelogénicos observado en esta especie fue de 20. A pesar de ser A. castelnaui una especie ovípara y por tanto, con una fecundidad relativamente alta en comparación con otros elasmobranquios, su gran tamaño la convierte en una especie sumamente susceptible a la presión de pesca, siendo incluso ya considerada como especie en peligro de extinción. Por tales motivos, el conocimiento de sus parámetros reproductivos podrá resultar en un manejo adecuado de los stocks.engEgg-bearing femalesElasmobranchsSize at maturityVitellogenic follicleClasperHembras con huevoElasmobranquiosTamaño de madurez sexualFolículo vitelogénicoClásperReproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian watersBiología reproductiva de la raya a lunares, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), en aguas del sudeste brasileñoinfo: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:FURGLICENSElicense.txtlicense.txttext/plain; charset=utf-81724https://repositorio.furg.br/bitstream/1/1235/2/license.txt5b92b9704b4f13242d70e45ddef35a68MD52open accessORIGINALReproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae) in southeastern Brazilian waters.PDFReproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae) in southeastern Brazilian waters.PDFapplication/pdf172284https://repositorio.furg.br/bitstream/1/1235/1/Reproductive%20biology%20of%20the%20spotback%20skate%2c%20Atlantoraja%20castelnaui%20%28Ribeiro%2c%201907%29%20%28Chondrichthyes%2c%20Rajidae%29%20in%20southeastern%20Brazilian%20waters.PDFefce699bd6efd9bccaaee1c65723632eMD51open access1/12352011-11-08 22:48:59.698open accessoai:repositorio.furg.br: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Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2011-11-09T00:48:59Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
dc.title.alternative.pt_BR.fl_str_mv |
Biología reproductiva de la raya a lunares, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), en aguas del sudeste brasileño |
title |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
spellingShingle |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters Oddone, Maria Cristina Egg-bearing females Elasmobranchs Size at maturity Vitellogenic follicle Clasper Hembras con huevo Elasmobranquios Tamaño de madurez sexual Folículo vitelogénico Clásper |
title_short |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
title_full |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
title_fullStr |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
title_full_unstemmed |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
title_sort |
Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae), in southeastern Brazilian waters |
author |
Oddone, Maria Cristina |
author_facet |
Oddone, Maria Cristina Amorim, Alberto Ferreira de Mancini, Patricia |
author_role |
author |
author2 |
Amorim, Alberto Ferreira de Mancini, Patricia |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Oddone, Maria Cristina Amorim, Alberto Ferreira de Mancini, Patricia |
dc.subject.por.fl_str_mv |
Egg-bearing females Elasmobranchs Size at maturity Vitellogenic follicle Clasper Hembras con huevo Elasmobranquios Tamaño de madurez sexual Folículo vitelogénico Clásper |
topic |
Egg-bearing females Elasmobranchs Size at maturity Vitellogenic follicle Clasper Hembras con huevo Elasmobranquios Tamaño de madurez sexual Folículo vitelogénico Clásper |
description |
Specimens of Atlantoraja castelnaui were obtained from seven commercial fishing vessels operating in southeastern Brazilian waters, from March 2005 to April 2006. A total of 53 males, ranging from 17.9 to 111.0 cm in total length (TL), were examined. Based on analyses of the clasper gland and clasper length, testes weight, testicular lobes diameter and alar thorns, size at maturity was estimated to be 91.0 cm TL. Fifty-four females were examined ranging from 17.4 to 116.0 cm TL. According to observations of uterus width, oviducal gland width, ovary weight and diameter of the largest vitellogenic follicle, size at maturity was estimated as 105.0cm TL. Vitellogenesis would start when follicles attain a diameter of 1.0 cm, and ovulation when attaining 3.0 cm of diameter. The maximum number of vitellogenic follicles of this species was 20. In spite of the fact that A. castelnaui is an oviparous species, and therefore, with a relatively high fecundity when compared with other elasmobranchs, its big size makes it an extremely vulnerable species to fishery pressure, being even already considered as an endangered one. Because of that, the knowledge of its reproductive parameters will lead to an adequate management of the stocks. |
publishDate |
2008 |
dc.date.issued.fl_str_mv |
2008 |
dc.date.accessioned.fl_str_mv |
2011-11-01T15:33:13Z |
dc.date.available.fl_str_mv |
2011-11-01T15:33:13Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ODDONE, M. C. ; AMORIM, A. F. ; MANCINI, P. L. . Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae) in southeastern Brazilian waters. Revista de Biología Marina y Oceanografía , v. 43, p. 327-334, 2008. Disponível em: <http://www.scielo.cl/pdf/revbiolmar/v43n2/art10.pdf>. Acesso em: 31 Out. 2011. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/1235 |
dc.identifier.issn.none.fl_str_mv |
0718-1957 |
identifier_str_mv |
ODDONE, M. C. ; AMORIM, A. F. ; MANCINI, P. L. . Reproductive biology of the spotback skate, Atlantoraja castelnaui (Ribeiro, 1907) (Chondrichthyes, Rajidae) in southeastern Brazilian waters. Revista de Biología Marina y Oceanografía , v. 43, p. 327-334, 2008. Disponível em: <http://www.scielo.cl/pdf/revbiolmar/v43n2/art10.pdf>. Acesso em: 31 Out. 2011. 0718-1957 |
url |
http://repositorio.furg.br/handle/1/1235 |
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eng |
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eng |
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