Data/hora: 16/06/2024 17:37:45

Provedor de dados: | 104
País: | Brazil
Título: | Aspectos reprodutivos de Sphoeroides greeleyi (Gilbert), Pisces, Osteichthyes, Tetraodontidae, da gamboa do Baguaçu, Baia De Paranaguá, Paraná, Brasil
Autores: | Schultz,Yart Damasceno; Favaro,Luís Fernando; Spach,Henry Louis.
Data: | 2002-03-01
Ano: | 2002
Palavras-chave: | Fish; Reproduetion; Histology; Histochemistry.
Resumo: | The present study analyses the reproductive aspects of Sphoeroides greeleyi (Gilbert, 1900), such as morphology and histochemistry of carbohydrates in the oogenesis phases, maturity scale, time and type of spawn, sexual rate and first ripened mature size for females. From the monthly captured animais (Nov 1998 to Nov 1999) the morphometric data (entire length and total weight) were extracted and the sex and the gonadal maturity were determined. Some ovaries were prepared for microscopic analysis that charac-terized six phases for the development of the ovarian folheies. Through the carbohydrates analysis the acid carbohydrates could be related to the oogenesis maintenance and the neutral carbohydrates to the beginning of embryonic development. A maturity scale containing six stages of gonadal development was determined. The reproductive period is between August and January and the spawn time is from October to January. The first ripened mature size for females oceurs between 6,5cm and 7.5 cm of total length. The sexual rate shows that there are more females than males during the reproductive period.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100004
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81752002000100004
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.19 n.1 2002
Fonte: | info:eu-repo/semantics/openAccess