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Artículo

Histological and morphometric study of the epididymus of Chinchilla lanigera Grey under controlled conditions in captivity

Gramajo Bühler, María CeciliaIcon ; Pucci, F. J.; Seisdedos de Sánchez Toranzo, Graciela del Valle
Fecha de publicación: 07/2015
Editorial: Cambridge University Press
Revista: Zygote
ISSN: 0967-1994
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Chinchilla lanigera, native to the Andean Mountains of Perú, Chile, Bolivia and Argentina, is a specimen of great economic importance because of its fur. In mammals, spermatozoa originated in testes are transported to the epididymis, where they undergo morphological and biochemical modifications known as sperm maturation, a basic step in the acquisition of the fertilizing ability. The aim of this work is the macroscopic and microscopic analysis of the epididymis of Chinchilla lanigera gray and its sectorization based on a histomorphological study. The epididymis presents a clear segmentation into 4 regions: initial segment, caput, corpus and cauda. The epithelium lining the seminiferous tubules is pseudostratified, with principal cells with stereocilia and basal, clear, apical, narrow and halo cells. The histological analysis showed that principal and basal cells are the prevailing populations in all regions, also revealing narrow cells and the absence of clear cells in the initial segment. Each segment presents its different histological and morphometric characteristics, which supports the idea of the specific behavior of each region, giving a segment-specific character to the process of sperm maturation in this species. No significant differences were found in the morphometric measurements or in the histological evaluation of the epididymis of samples collected in April and October. The fact that no differences were found between the samples collected during two periods when the reproductive ability in nature is different suggests the importance of external factors in the control of the reproductive cycle of Chinchilla lanigera.
Palabras clave: Chinchilla Lanigera , Epidydimis , Morphometric , Histologic , Captivity , Sperm
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/48160
DOI: http://dx.doi.org/10.1017/S096719941500026X
URL: https://www.cambridge.org/core/journals/zygote/article/histological-and-morphome
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Articulos(INSIBIO)
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Citación
Gramajo Bühler, María Cecilia; Pucci, F. J.; Seisdedos de Sánchez Toranzo, Graciela del Valle; Histological and morphometric study of the epididymus of Chinchilla lanigera Grey under controlled conditions in captivity; Cambridge University Press; Zygote; 24; 3; 7-2015; 355-363
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