Artículo
Anatomy and Histology of the Male Reproductive Tract and Spermatogenesis Fine Structure in the Lesser Anteater ( Tamandua tetradactyla , Myrmecophagidae, Xenarthra): Morphological Evidences of Reproductive Functions
Rossi, Luis Francisco
; Luaces, Juan Pablo
; Aldana Marcos, Hernan Javier; Cetica, Pablo Daniel
; Perez Jimeno, Guillermo; Merani, Maria Susana
Fecha de publicación:
08/2013
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Anatomia Histologia Embryologia-Journal Of Veterinary Medicine Series C
ISSN:
1439-0264
e-ISSN:
0340-2096
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The anatomy and histology of the male genital tract of the lesser anteater were studied. Fine details of spermatozoa regarding their genesis and morphology were also studied in six adult specimens. The testes lie in the pelvic cavity. The deferent duct emerges from the epididymis and opens into the ejaculatory duct, which drains into the membranous urethra. Accessory glands (prostate, seminal vesicle and bulbourethral gland) are histologically similar to those described in other mammals. The short penis presents an urethral orifice, while the corpus spongiosum becomes thinner at the end indicating the absence of a histologically defined glans. The seminiferous epithelium shows: (1) Sertoli cells with deep nuclear indentations, (2) spermatogonia with crusty-like chromatin, (3) spermatocytes at different stages of maturation and (4) three morphologi- cally distinct stages of spermatid differentiation according to nuclear shape, acrosome development and chromatin condensation. Sperm heads appear oval. The length of the spermatozoa averages 67.33 ± 1.60 lm. Two specimens with inactive spermatogenesis were azoospermic. Their testes and epididymis pre- sented sizes smaller than those with active spermatogenesis. These studies together with others in anteaters may contribute to successful breeding in conservation programmes.
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Identificadores
Colecciones
Articulos(INBIOMED)
Articulos de INSTITUTO DE INVESTIGACIONES BIOMEDICAS
Articulos de INSTITUTO DE INVESTIGACIONES BIOMEDICAS
Articulos(OCA HOUSSAY)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA HOUSSAY
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA HOUSSAY
Articulos(OCA PQUE. CENTENARIO)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA PQUE. CENTENARIO
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA PQUE. CENTENARIO
Citación
Rossi, Luis Francisco; Luaces, Juan Pablo; Aldana Marcos, Hernan Javier; Cetica, Pablo Daniel; Perez Jimeno, Guillermo; et al.; Anatomy and Histology of the Male Reproductive Tract and Spermatogenesis Fine Structure in the Lesser Anteater ( Tamandua tetradactyla , Myrmecophagidae, Xenarthra): Morphological Evidences of Reproductive Functions; Wiley Blackwell Publishing, Inc; Anatomia Histologia Embryologia-Journal Of Veterinary Medicine Series C; 42; 4; 8-2013; 247-256
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