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Effects of photoperiod on epididymal and sperm morphology in a wild rodent, the viscacha (Lagostomus maximus maximus)
(Hindawi Publishing Corporation, 2013-03)
The viscacha (Lagostomus maximus maximus) is a seasonal South American wild rodent. The adult males exhibit an annual reproductive cycle with periods of maximum and minimum gonadal activity. Four segments have been identified ...
ACTH cells of pituitary pars distalis of viscacha (Lagostomus maximus maximus): immunohistochemical study in relation to season, sex, and growth
(Elsevier, 2006-05)
Corticotrope or ACTH cells were immunohistochemically identiWed in the pituitary pars distalis (PD) of viscacha by using the polyclonal antiserum against ACTH (1–24). The localization, distribution, shape, percentage ...
Immunohistochemical Study of Somatotrophs in Pituitary Pars Distalis of Male Viscacha (Lagostomus maximus maximus) in Relation to the Gonadal Activity
(Karger, 2007-04)
Somatotrophs were identified and quantified in pituitary pars distalis of male viscachas (Lagostomus maximus maximus) during the annual reproductive cycle, after the administration of melatonin, after castration and in ...
Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
(Wiley-liss, div John Wiley & Sons Inc., 2005-05)
The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies ...
Shape and function of the perineal muscles of viscacha (Lagostomus maximus)
(REVISTA PESQUISA VETERINARIA BRASILEIRARIO JANEIRO, 2012)
Pieri N.C.G., Alicia M. Flamini A.M., Barbeito C.G., Casals J.B., Roque K.B., Favaron P.O., Miglino M.A. & Martins D.S. 2012. [Shape and function of the perineal muscles of viscacha (Lagostomus maximus).] Forma e funcao ...
Effect of the photoperiod and administration of melatonin on folliculostellate cells of the pituitary pars distalis of adult male viscacha (Lagostomus maximus maximus)
(Elsevier Gmbh, Urban & Fischer Verlag, 2011-06)
Numerous reports have shown the effect of photoperiod and melatonin administration on the different hormone secreting cell types in the pituitary pars distalis. The viscacha (Lagostomus maximus maximus) is a rodent with ...
Pigmented cells in the pineal gland of female viscacha (Lagostomus maximus maximus): A histochemical and ultrastructural study
(Hindawi Limited, 2017-12-17)
The presence of pigment has been demonstrated in different nervous structures such as those of retina, substantia nigra, and locus coeruleus. These pigments have also been described in the pineal gland of different mammal ...
Interstitial Cells in the Pineal Gland of Pregnant and Nonpregnant Viscachas (Lagostomus maximus maximus): A Morphometric and Biochemical Study
(Karger, 2018-10)
The pineal gland of mammals undergoes morphological and biochemical changes throughout the gestation period. In viscachas, a seasonal breeding rodent, pregnancy lasts approximately 154 days and 3 stages can be defined, ...