Ultrastructure of the Spermatozoa of the Domestic Duck (Anas platyrhynchos sp.)

Autor(es)

Simoes, K. ^[1] ; Orsi, A. M. ^{[2, 3]} ; Artoni, S. M. B. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed Goias, UFG, Dept Morfol, Inst Ciencias Biol, BR-74001970 Goiania, Go - Brazil

^[2] Univ Estadual Paulista, Dept Anat, Inst Biociencias, UNESP, Sao Paulo - Brazil

^[3] Univ Marilia, UNIMAR, Sao Paulo - Brazil

^[4] Univ Estadual Paulista, Dept Fisiol & Morfol Anim, UNESP, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ANATOMIA HISTOLOGIA EMBRYOLOGIA; v. 41, n. 3, p. 202-208, JUN 2012.
• Citações Web of Science: 2

Resumo

The ultrastructure of the spermatozoa of the domestic duck (Anas platyrhynchos sp.) was analysed by transmission and scanning electron microscopies and compared with the results obtained in preliminary studies involving other non-passerine birds. The spermatozoa were characterised by the presence of a short head, short midpiece and long principal piece. The head consisted of a reduced acrosome that contained moderately electron-dense homogenous material. The implantation fossa was observed between the base of the nucleus and the proximal centriole. The midpiece contained electron-dense material associated with the proximal centriole and nuclear membrane, and a long distal centriole surrounded throughout its length by 1112 elliptical mitochondria. A dense annulus separating the midpiece from the principal piece was visible. Posterior to the annulus, the axoneme was formed surrounded by a dense fibrous sheath, representing the principal piece or flagellum, which was a long segment with a smooth surface and a smaller diameter than the midpiece. The spermatozoon of the domestic duck resembles that of other non-passerine birds, corresponding to a basic type of spermatozoon similar to that of reptiles, called sauropsid type. (AU)

• Processo FAPESP: 00/05079-4 - Análises morfométricas e ciclo testicular anual de Anas platyhrynchos sp.: características morfológicas e histofisiológicas do testículo e região epididimária
• Beneficiário: Karina Simões
• Modalidade de apoio: Bolsas no Brasil - Doutorado