Resumo
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.
Tetraodontidae; puffer fishes; reproduetion
Tetraodontidae; puffer fishes; reproduetion
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
Texto completo disponível apenas em PDF.
Full text available only in PDF format.
AGRADECIMENTOS. CNPq e FUNPAR.
Recebido em 19.XI.2000; aceito em 24.I.2002.
- Chaves, P.T.C. 1989. Hidratação pré-ovulatória em peixes: Um caráter de origem marinha? Revta bras. Zool. 6 (3): 463-472.
- Dias, J.F.E. Peres-Rio; P.T.C. Chaves; CL.D.B. Rossi-Wonctschowski. 1998. Análise Macroscópica dos Ovários de Teleósteos: Problemas de Classificação e Recomendações de Procedimentos. Rev. Brasil. Biol. 58 (1): 55-69.
- Figueiredo, J.L. & N.A. Menezes. 2000. Manual de Peixes Marinhos do Sudeste do Brasil. VI. Teleostei (5). São Paulo, Museu de Zoologia, Universidade de São Paulo. 116p.
- Matsumura, K. 1995. Tetrodotoxin as a Pheromone. Nature 378: 563-564.
- Targett, T.E. 1978. Food Resource Partitioning by the Pufferfisches Sphoeroides spengleri and S. testudineus from Biscyne Bay, Florida. Mar. Biol. 49: 83-91.
- Vazzoler, A.E.A.M. 1996. Biologia Reprodutiva de Peixes Teleósteos: Teoria e Prática. Maringá, Ed. Univ. Estadual de Maringá, 169p. Vizziano, D & N. Berois 1990.
- Histología des Ovario de Macrodon ancylodon (Bloch y Schneider, 1801) (Teleostei: Scianidae). Ovogênesis. Folículos Post-Ovulatorios. Atresia. Rev. Brasil. Biol. 50 (2): 523-536.
Datas de Publicação
-
Publicação nesta coleção
19 Maio 2009 -
Data do Fascículo
Mar 2002
Histórico
-
Aceito
24 Jan 2002 -
Recebido
19 Nov 2000
