Sobre a fecundidade e a desova da pescada-foguete
Autor(a) principal: | |
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Data de Publicação: | 1963 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Boletim do Instituto Oceanográfico |
Texto Completo: | https://www.revistas.usp.br/biocean/article/view/27751 |
Resumo: | This paper presents an analysis of the fecundity and spawning of the sea trout, "pescada-foguete" (Macrodon ancylodon), of the Brazilian coast south of 29ºS, based mostly on egg count estimates of 21 specimens. The following conclusions were drawn: 1 - The eggs in the pre-spawning fish present a multimodal distribution of diameters, suggesting that they are spent successively within each spawning. 2 - The long spawning period, November-May, may be due to the partial spawning suggested above. 3 - In spent fish the ovaries contain mostly (97.5%) ovocytes less than 140 micra in diameter, plus a small quantity (2.5%) of eggs being resorbed. 4 - Correlations were drawn between fecundity (F)/total length (L) and fecundity (F)/weight (W), and are presented in equations (a) and (b) above. 5 - The value of L for F = 0 was determined and the value obtained (23.6 cm) is close to that verified for the beginning of the first maturity. |
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Boletim do Instituto Oceanográfico |
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|
spelling |
Sobre a fecundidade e a desova da pescada-foguete This paper presents an analysis of the fecundity and spawning of the sea trout, "pescada-foguete" (Macrodon ancylodon), of the Brazilian coast south of 29ºS, based mostly on egg count estimates of 21 specimens. The following conclusions were drawn: 1 - The eggs in the pre-spawning fish present a multimodal distribution of diameters, suggesting that they are spent successively within each spawning. 2 - The long spawning period, November-May, may be due to the partial spawning suggested above. 3 - In spent fish the ovaries contain mostly (97.5%) ovocytes less than 140 micra in diameter, plus a small quantity (2.5%) of eggs being resorbed. 4 - Correlations were drawn between fecundity (F)/total length (L) and fecundity (F)/weight (W), and are presented in equations (a) and (b) above. 5 - The value of L for F = 0 was determined and the value obtained (23.6 cm) is close to that verified for the beginning of the first maturity. Universidade de São Paulo. Instituto Oceanográfico1963-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/biocean/article/view/2775110.1590/S0373-55241963000200003Boletim do Instituto Oceanográfico; v. 13 n. 2 (1963); 33-40 Boletim do Instituto Oceanografico; Vol. 13 No. 2 (1963); 33-40 Boletim do Instituto Oceanográfico; Vol. 13 Núm. 2 (1963); 33-40 2316-89510373-5524reponame:Boletim do Instituto Oceanográficoinstname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP)instacron:USPporhttps://www.revistas.usp.br/biocean/article/view/27751/29523Vazzoler, A. E. A. de M.info:eu-repo/semantics/openAccess2012-06-24T14:48:55Zoai:revistas.usp.br:article/27751Revistahttps://www.revistas.usp.br/bioceanPUBhttps://www.revistas.usp.br/biocean/oaiamspires@usp.br0373-55240373-5524opendoar:2012-06-24T14:48:55Boletim do Instituto Oceanográfico - Instituto Oceanográfico da Universidade de São Paulo (IOUSP)false |
dc.title.none.fl_str_mv |
Sobre a fecundidade e a desova da pescada-foguete |
title |
Sobre a fecundidade e a desova da pescada-foguete |
spellingShingle |
Sobre a fecundidade e a desova da pescada-foguete Vazzoler, A. E. A. de M. |
title_short |
Sobre a fecundidade e a desova da pescada-foguete |
title_full |
Sobre a fecundidade e a desova da pescada-foguete |
title_fullStr |
Sobre a fecundidade e a desova da pescada-foguete |
title_full_unstemmed |
Sobre a fecundidade e a desova da pescada-foguete |
title_sort |
Sobre a fecundidade e a desova da pescada-foguete |
author |
Vazzoler, A. E. A. de M. |
author_facet |
Vazzoler, A. E. A. de M. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Vazzoler, A. E. A. de M. |
description |
This paper presents an analysis of the fecundity and spawning of the sea trout, "pescada-foguete" (Macrodon ancylodon), of the Brazilian coast south of 29ºS, based mostly on egg count estimates of 21 specimens. The following conclusions were drawn: 1 - The eggs in the pre-spawning fish present a multimodal distribution of diameters, suggesting that they are spent successively within each spawning. 2 - The long spawning period, November-May, may be due to the partial spawning suggested above. 3 - In spent fish the ovaries contain mostly (97.5%) ovocytes less than 140 micra in diameter, plus a small quantity (2.5%) of eggs being resorbed. 4 - Correlations were drawn between fecundity (F)/total length (L) and fecundity (F)/weight (W), and are presented in equations (a) and (b) above. 5 - The value of L for F = 0 was determined and the value obtained (23.6 cm) is close to that verified for the beginning of the first maturity. |
publishDate |
1963 |
dc.date.none.fl_str_mv |
1963-01-01 |
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 |
https://www.revistas.usp.br/biocean/article/view/27751 10.1590/S0373-55241963000200003 |
url |
https://www.revistas.usp.br/biocean/article/view/27751 |
identifier_str_mv |
10.1590/S0373-55241963000200003 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/biocean/article/view/27751/29523 |
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 de São Paulo. Instituto Oceanográfico |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
dc.source.none.fl_str_mv |
Boletim do Instituto Oceanográfico; v. 13 n. 2 (1963); 33-40 Boletim do Instituto Oceanografico; Vol. 13 No. 2 (1963); 33-40 Boletim do Instituto Oceanográfico; Vol. 13 Núm. 2 (1963); 33-40 2316-8951 0373-5524 reponame:Boletim do Instituto Oceanográfico instname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP) instacron:USP |
instname_str |
Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Boletim do Instituto Oceanográfico |
collection |
Boletim do Instituto Oceanográfico |
repository.name.fl_str_mv |
Boletim do Instituto Oceanográfico - Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
repository.mail.fl_str_mv |
amspires@usp.br |
_version_ |
1797049930163945472 |