SciELO - Scientific Electronic Library Online

 
vol.11 issue4Myrciariamyia bivalva, gen.n. and sp.n. (Diptera, Cecidomyiidae, Oligotrophini) associated with Myrciaria floribunda (Camb.) Legr. (Myrtaceae) in BrazilMaturation and growth curves of Macrobrachium Carcinus (Linnaeus) (Crustacea, Decapoda, Palaemonidae) from Ribeira de Iguape River, southern Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.11 no.4 Curitiba  1994

http://dx.doi.org/10.1590/S0101-81751994000400008 

A incubação de ovos e larvas em Genidens genidens (Valenciennes) (Siluriformes, Ariidae) da Baía de Guaratuba, Paraná, Brasil1

 

Eggs and larvae mouthbreeding in Genidens genidens (Valenciennes) (Siluriformes, Ariidae) from Guaratuba Bay, Paraná, Brazil

 

 

Paulo de Tarso da C. Chaves

Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531-970 Curitiba, Paraná, Brasil, Pesquisador do CNPq

 

 


ABSTRACT

At Guaraluba bay, the catfish Genidens genidens shows incubating behavior during the summer months. The larvae are either less or heavier than the eggs, and their stomach analysis confirms the exogenous leeding during incubation. Embryos sizes can increase to 59mm in total lenght and 2,8g in total weight, including the yolksac. It was observed that the largest larvae are guarded by the largest adults, and that the embryo size is similar among individuals from the same adult.

Key words: Catfish, reproduction, fishes, larvae, Paraná


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

AGRADECIMENTOS. Ao Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) e à Fundação da Universidade Federal do Paraná, pela concessão de auxílios. Ainda ao acadêmico Dalton T.R. dos Santos, pela arte final das ilustrações, e a dois Revisores anônimos.

 

REFERÊNCIAS BIBLIOGRÁFICAS

Balon, E.K. 1975. Reproductive guilds of fishes: a proposal and definition. J. Fish. Res. Bd Can. 32: 821-864.         [ Links ]

Barbieri, L.R.; R.P. Santos & J.V. Andreata. 1992. Reproductive biology of the marine catfish, Genidens genidens (Siluriformes, Ariidae), in the Jacarepaguá Lagoon system, Rio de Janeiro, Brazil. Environ. Biol. Fishes 35: 23-35.         [ Links ]

Breeder Jr., C.M. & D.E. Rosen. 1966. Modes of Reproduction in Fishes. T.F.H. Publications, USA, 941p.         [ Links ]

Coates, D. 1988. Length-dependent changes in egg size fecundity in females, and brooded embryo size in males, of fork-tailed catfishes (Pisces: Ariidae) from the Sepik River, Papua New Guinea, with some implications for stock assessments. J. Fish Biol. 33: 455-464.         [ Links ]

Etchevers, S.L. 1978. Contribution to the biology of the sea catfish, Arius spixii (Agassiz) (Pisces, Ariidae), south of Margarita Island, Venezuela. Bull. mar. Sci.28 (2): 381-385.         [ Links ]

Gunter, G. 1947. Observation on breeding of the marine catfish, Galeichthys felis (Linnaeus). Copeia 4: 217-223.         [ Links ]

Mishima, M. & S. Tanji. 1985. Fecundidade e incubação dos bagres marinhos (Osteichthyes, Ariidae) do complexo estuarino lagunar de Cananéia (25ºS, 48ºW). Bolm Inst. Pesca, São Paulo, 12 (2): 77-85.         [ Links ]

Oppenheimer. J.R. 1970. Mouthbreeding in fishes. Anim. Behav. 18: 493-503.         [ Links ]

Peda, J.C; R.M. Sanchez & M.M. Jamett. 1988. Desarrollo embrionário. larval y del alevín de Cichlasoma dovii (Gunther, 1864) (Pisces: Cichlidae). Revta Biol. trop. 36 (2B): 417-422.         [ Links ]

Reis, E.G. 1986. Reproduction and feeding habits of the marine catfish Netuma barba (Siluriformes, Ariidae) in the estuary of Lagoa dos Patos, Brazil. Atlântica, Rio Grande, 8: 35-55.         [ Links ]

 

 

Recebido em 10.V.1994; aceito em 08.VIII.1994.

 

 

1 Contribuição número 804 do Departamento de Zoologia, Universidade Federal do Paraná, Auxílios CNPq e FUNPAR.