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Revista chilena de anatomía

Print version ISSN 0716-9868

Abstract

OROSTEGUI P., César et al. HISTOLOGICAL AND MORPHOMETRIC CHANGES OF THE SEMINAL VESICLES OF Chinchilla laniger (GREY) IN CAPTIVITY, INDUCED BY SEASONAL VARIATIONS. Rev. chil. anat. [online]. 2000, vol.18, n.1, pp.89-96. ISSN 0716-9868.  http://dx.doi.org/10.4067/S0716-98682000000100012.

Macroscopic and microscopic structures of the seminal vesicles was described in Chinchilla laniger (GREY) under conditions of captivity. The experiments were performed in adults subjects along a period of one year (two to three years old) in order to determine possible seasonal variations. The following parameters were investigated in this South American native roedor: corporal and glandular weight, organo-somatic index (IOS), wall thickness, gland diameter and epithelial tissue high. Highest values were found in winter and lowest values in summer, except corporal weight that displayed no variations along the year (p>0.05). The histochemical analysis of glandular secretion revealed the absence of neutral glycoproteins sulphated and acids glycoproteins (as determined by PAS, Alcian Blue pH1 and pH2,5 respectively), through the period studied. In conclusion, the seminal vesicles of the Chinchilla laniger in captivity showed the highest secretory activity in the Fall-Winter seasons. The present results obtained from this period are consistent with the fact that it corresponds with the highest reproductive activity for the specie

Keywords : Seminal vesicles; Reproductive cycle; Seasonal; Morphology; Chinchila; Rodent.

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