Acessibilidade / Reportar erro

Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná

Reproductive biology of three simpatric species of Neotropical fishes: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus and Schizodon nasutus Kner (Characiformes, Anostomidae) from the newly formed Miranda Reservoir, High Paraná Basin

Resumo

The reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 1998 at three sampling stations. The stages of gonad development were identified macroscopically in the field and then confirmed by histological analysis in the laboratory. The females of all species reached larger standard length than the males. Pimelodus maculatus in reproductive activity were captured only in November, 1997 and January, 1998 whereas L. amblyrhynchus and S. nasutus were in activity throughout the year. The gonadosomatic index reached the peak during the advanced maturation stage in all species, but the hepatosomatic index and coelomic fat index exhibited distinct tendencies. Length at first maturity was 9.5 cm SL for amblyrhynchus females and 17.1 and 13.0 cm SL, respectively, for S. nasutus females and males. L. amblyrhynchus and S. nasutus are partial spawners. The size at first maturity and type of spawning of P. maculatus were not possible to determine in this work.

Fish reproduction; reservoir; dam effects


Fish reproduction; reservoir; dam effects

Biologia reprodutiva de três espécies simpátricas de peixes neotropicais: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus Garavello & Britski e Schizodon nasutus Kner (Characiformes, Anostomidae) do recém-formado Reservatório de Miranda, Alto Paraná

Reproductive biology of three simpatric species of Neotropical fishes: Pimelodus maculatus Lacépède (Siluriformes, Pimelodidae), Leporinus amblyrhynchus and Schizodon nasutus Kner (Characiformes, Anostomidae) from the newly formed Miranda Reservoir, High Paraná Basin

Volney VonoI; Luiz Gustavo M. SilvaII; Bruno P. MaiaII; Hugo P. GodinhoIII

IPrograma de Pós-Graduação em Ecologia, Conservação e Manejo de Vida Silvestre, Universidade Federal de Minas Gerais. Avenida Antonio Carlos 6627, Caixa Postal 486, 31270-901 Belo Horizonte, Minas Gerais, Brasil

IIBolsista FIP/PUC Minas

IIPrograma de Pós-graduação em Zoologia de Vertebrados, PUC Minas Gerais. Avenida Dom José Gaspar 500, Prédio 41, 30535-610 Belo Horizonte, Minas Gerais, Brasil

ABSTRACT

The reproductive activity parameters of the teleosts Pimelodus maculatus Lacépède, 1803, Leporinus amblyrhynchus Garavello & Britski, 1987 and Schizodon nasutus Kner, 1859 was evaluated at a newly formed reservoir in the Araguari River, Paraná River basin, Southeast Brazil. The fishes were captured by gill nets bimonthly from November 1997 to November 1998 at three sampling stations. The stages of gonad development were identified macroscopically in the field and then confirmed by histological analysis in the laboratory. The females of all species reached larger standard length than the males. Pimelodus maculatus in reproductive activity were captured only in November, 1997 and January, 1998 whereas L. amblyrhynchus and S. nasutus were in activity throughout the year. The gonadosomatic index reached the peak during the advanced maturation stage in all species, but the hepatosomatic index and coelomic fat index exhibited distinct tendencies. Length at first maturity was 9.5 cm SL for amblyrhynchus females and 17.1 and 13.0 cm SL, respectively, for S. nasutus females and males. L. amblyrhynchus and S. nasutus are partial spawners. The size at first maturity and type of spawning of P. maculatus were not possible to determine in this work.

Key words: Fish reproduction, reservoir, dam effects

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

AGRADECIMENTOS. Agradecemos ao GE/PA, da Companhia Energética de Minas Gerais (CEMIG), pelo suporte financeiro dado ao estudo, ao CNPq e ao FIP PUC MINAS pelas bolsas concedidas. A Denise da Silveira Lemos, pelo auxílio na dissecção dos indivíduos de taguara.

Recebido em 24.VIII.2001; aceito em 02.IX.2002.

  • AGOSTINHO, A.A.; L.E. MIRANDA; L.M. BINI; L.C. GOMES; S.M. THOMAZ & H.I. SUZUKY. 1999. Patterns of colonization in neotropical reservoirs, and prognoses on aging, p. 227-265. In: J.G. TUNDISI & M. STRASKRABA (Eds). Theorical reservoir ecology and its applications. Leiden, Backhuys Publishers, 592p.
  • AGOSTINHO, A.A. & H.F. JÚLIO JR. 1999. Peixes da bacia do alto rio Paraná, p. 374-400. In: RH. LOWE-MCCONNELL (Ed). Estudos ecológicos de comunidades de peixes tropicais. São Paulo, Brasil, Edusp, 535p.
  • BAZZOLI, N.; L.C.V. CANGUSSU; E. RIZZO & G.B. SANTOS. 1997. Reprodução e desova de mandis Pimelodus maculatus e Iheringichthys labrosus (Pisces, Pimelodidae) nos reservatórios de Furnas, Marimbondo e Itumbiara. Bios, Belo Horizonte, 5 (5): 7-15.
  • BURGESS, W.E. 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. Neptune City, FH Publications Inc., 784p.
  • FERREIRA, A.O; V. VONO; F. VIEIRA & C.B.M. ALVES. 1997. Monitoramento do desembarque pesqueiro no reservatório da UHE Nova Ponte, p. 1-7. In: Anais do XIV SNPTEE - Seminário Nacional de produção e transmissão de energia elétrica, Belém, 112p.
  • GARAVELLO, J.C. & H.A. BRITSKI. 1987. Duas novas espécies do gênero Leporinus Spix, 1829 da bacia do Alto Paraná, (Teleostei, Anostomidae). Com. Mus. Ciênc. PUCRS, Porto Alegre, 44: 153-165.
  • ______. 1990. Duas novas espécies do gênero Schizodon Agassiz da bacia do Alto Paraná, Brasil, América do Sul (Ostariophisy, Anostomidae). Naturalia, São Paulo, 15: 153-170.
  • GODINHO, H.M.; S. FERRI; L.O. MEDEIROS & J.M.B. BARKER. 1974. Morphological changes in the ovary of Pimelodus maculatus Lacépède, 1803 (Pisces, Siluroidei), related to the reproduetive cycle. Rev. Brasil. Biol., Rio de Janeiro, 34 (4): 581-588.
  • GODOY, M.P. 1975. Peixes do Brasil, subordem Characoidei - Bacia do Rio Mogi Guassu. Piracicaba, Franciscana, Vol. 4, 846p.
  • PETRERE JR.. M. 1989. River fisheries in Brazil: a review. Regulated Rivers Research and Management, Chichester, 4 (1): 1-16
  • RICARDO, M.C.P.; G.B. SANTOS; E. RIZZO & N. BAZZOLI. 1997. Aspectos reprodutivos de Leporinus amblyrhynchus Garavello & Britski, 1987 e Leporinus striatus Kner, 1859 (Pisces: Anostomidae) no reservatório de Furnas, MG. Bios, Belo Horizonte, 5 (5): 29-35.
  • SAMPAIO, I.B.M. 1998. Estatística aplicada à experimentação animal. Belo Horizonte, Fundação de Ensino e Pesquisa em Medicina Veterinária e Zootecnia, 221 p.
  • VAZZOLER, A.E.A.M. 1996. Biologia da Reprodução de Peixes teleósteos: teoria e prática. Maringá, EDUEM, 169p.
  • VAZZOLER, A.E.A.M.; H.I. SUZUKI; E.E. MARQUES & M.P. LIZAMA. 1997. Primeira maturação gonadal, períodos e áreas de reprodução, p. 249-265. In: A.E.A.M. VAZZOLER; A.A. AGOSTINHO & N.S. HAHN (Eds). A planície de inundação do Alto rio Paraná: aspectos físicos, biológicos e socioeconômicos. Maringá, EDUEM, 460p.

Datas de Publicação

  • Publicação nesta coleção
    15 Maio 2009
  • Data do Fascículo
    Set 2002

Histórico

  • Recebido
    24 Ago 2001
  • Aceito
    02 Set 2002
Sociedade Brasileira de Zoologia Caixa Postal 19020, 81531-980 Curitiba PR Brasil, Tel./Fax: +55 41 3266-6823, - Curitiba - PR - Brazil
E-mail: sbz@bio.ufpr.br