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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.14 no.4 Curitiba Dec. 1997

http://dx.doi.org/10.1590/S0101-81751997000400002 

Ultraestrutura do espermatozóide de Protothaca pectorina (Lamarck) (Mollusca, Bivalvia) do litoral norte do Brasil

 

Ultrastructure of the spermatozoon of Protothaca pectorina Lamarck (Mollusca, Bivalvia) of the north litoral of the Brazil

 

 

Edilson MatosI; Patricia MatosII; Graça CasalIII; Carlos AzevedoIV

IDepartamento de Biologia Animal, Histologia e Embriologia, Faculdade de Ciências Agrárias do Pará. 66077-530 Belém, Pará, Brasil
IIDepartamento de Histologia e Embriologia, Universidade Federal do Pará. 66075-900 Belém, Pará, Brasil
IIILaboratório de Biologia Celular, Instituto Superior de Ciências da Saúde. 4580, Paredes, Portugal
IVDepartamento de Biologia Celular, Universidade do Porto. 4050 Porto, Portugal

 

 


ABSTRACT

The ultrastructure of spermatozoa of the Protothaca pectorina (Lamarck, 1818) is described. The most significam differences were found in the structure and arreangement of the acrosomes, with contains two types of material, one fibrilar, the other electrondense granular. It is concluded that sperm ultrastructure is of the primitive type.

Key words: Mollusca, Bivalvia, Protothaca peclorina, ultrastructure, spermatozoa


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

AGRADECIMENTOS. Ao Prof. Dr. Osmar Domaneschi (Instituto de Biociências, Universidade de São Paulo) pela identificação da espécie. Ao Sr. João Carvalheiro pelo serviço iconográfico. Trabalho parcialmente subsidiado pela Universidade do Porto (Portugal), FCAP, UFPa, CEPNOR/IBAMA e Fundação Engenheiro Antônio de Almeida (Portugal).

 

REFERÊNCIAS BIBLIOGRÁFICAS

Azevedo, C. & L. Corral. 1985. The fine structure of the spermatozoa of Siphonaria algesirae (Gastropoda, Pulmonata). Jour. Morphol. 186: 107-117.         [ Links ]

Azevedo, C; A. Lobo-da-Cunha & E. Oliveira. 1985. Ultrastrucuture of spermatozoon in Gibulla umbilicalis (Gastropoda, Prosobranchia), with special reference to acrosomal formation. Jour. Submicrosc. Cytol. 17: 609-614.         [ Links ]

Buckland-Nicks, J. & F.S. Chia. 1986. Formation of the acrosome and basal body during spermiogenesis in a marine snail, Nerita picea (Molusca: Archaeogastropoda). Gamete Res. 15: 13-23.         [ Links ]

Daniels, E.W.; A.C. Longwell; J.M. McNiff & R.W. Wolfgang. 1971. Ultrastructure of spermatozoa from the American oyster Crassostrea virginica. Trans. Amer. Microsc. Soc. 90: 275-282.         [ Links ]

Eckelbarger, K.J. & L.S. Eyster. 1981. An ultrastructural study of spermatogenesis in the nudibranch mollusc Spwilla neapolitana. Jour. Morphol. 170:283-299.         [ Links ]

Eckelbarger, K.J.; R. Bieler & P.M. Mikkelsen. 1990. Ultrastructure of sperm development and mature sperm morphology in three species of commensal bivalves (Mollusca: Galeommatoidea). Jour. Morphol. 205: 63-75.         [ Links ]

Franzén, A. 1983. Ultrastructural studies of spermatozoa in three bivalves species with notes on evolution of elongated sperm nucleus in primitive spermatozoa. Gamete Res. 7: 199-214.         [ Links ]

Hodgson, A.N. & R.T.F. Bernard. 1986. Ultrastructure of the sperm and sper-matogenesis of three species of Mytilidae (Mollusea, Bivalvia). Gamete Res. 15: 123-135.         [ Links ]

______. 1988. A comparison of the structure of the spermatozoa and spermatogenesis of 16 species of patellid limpet (Mollusaca: Gastropoda: Archaeogastropoda). Jour. Morphol. 195: 205-223.         [ Links ]

Matos, E.; P. Matos; L. Corral & C. Azevedo. 1995. Estudo ultraestrutural da espermatogênese de Donax striatus Linnaeus (Mollusea, Bivalvia) do litoral norte do Brasil. Revta bras. Zool. 12: 221-227.         [ Links ]

Popham, J.D.; M.R. Dickson & C.K. Goddard. 1974. Ultrastructural study of the mature gametes of two species of Bankia (Mollusea: Teredinidae). Aust. Jour. Zool. 22: 1-12.         [ Links ]

Rocha, E. & C. Azevedo. 1990. Ultrastructural study of the spermatogenesis of Anodonta cygnea L. (Bivalvia,Unionidae). Invert. Reprod. Dev. 18: 169-176.         [ Links ]

Sousa, M.; L. Corral & C. Azevedo. 1989. Ultrastructural and cytochemical study of spermatogenesis in Scrobicalaha plana (Mollusca, Bivalvia). Gamete Res. 24: 393-401.         [ Links ]

 

 

Recebido em 04.VII.1996; aceito em 04.IX.1997.