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vol.19 issue1Catalogue of the apoidea of the Neotropical region (Hymenoptera, Colletidae): IV. HylaeinaeReproductive aspects of Sphoeroides greeleyi (Gilbert), Tetraodontidae, from gamboa do Baguaçu, Paranaguá, State of Paraná, Brazil author indexsubject indexarticles search
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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.19 no.1 Curitiba Mar. 2002

https://doi.org/10.1590/S0101-81752002000100003 

Biologia reprodutiva de Sphoeroides testudineus (Linnaeus) (Pisces, Osteichthyes, Tetraodontidae) da gamboa do Baguaçu, Baía de Paranaguá, Paraná, Brasil

 

Reproduetive biology of Sphoeroides testudineus (Linneus) (Pisces, Osteichthyes, Tetraodontidae) of the gamboa do Baguaçu, bay of Paranaguá, State of Paraná, Brazil

 

 

Claudia RochaI,III; Luís F. FavaroII; Henry L. SpachIII

IBolsista de Iniciação Científica PIBIC (CNPq)
IIDepartamento de Biologia Celular, Centro Politécnico, Universidade Federal do Paraná, Caixa Postal 19031, 81531-990 Curitiba, Paraná, Brasil
IIICentro de Estudos do Mar, Universidade Federal do Paraná. Avenida Beira Mar, 83255-000 - Pontal do Paraná, Paraná, Brasil

 

 


ABSTRACT

The present study seeks to elucidatc reproduetive aspects of Sphoeroides testudineus (Linnaeus, 1758), Tetraodontidae. Monthly collections were accomplished for one year (November/98-October/99), in the gamboa do Baguaçu, Bay of Paranaguá with a Fyke net. The macroscopic analysis of the gonad stages allowed us to estimate the sexual proportion as 1:1 during the whole period, except in the months of May and October, when the proportions of two females for one male and two males for one female were observed respectively. The analysis of the relative frequency of the monthly gonad stages and the Curve of Maturation aided in the determination of the reproduetive period, that oceurred from September to January. Microscopic analyses of the female gonads allowed us to characterize four develo-pment phases of the ovarian follicle, six stages of ovarian development and the type of spawn, which was parceled. The first maturation for females was estimated to be betwecn 10-11 cm of length.

Key words: Tetraodontidae, puffer fishes, reproduetion


 

 

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AGRADECIMENTOS. CNPq e FUNPAR.

 

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Recebido em 19.XI.2000; aceito em 24.I.2002.

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