[Seasonal morphological peculiarities of the structure of the adrenal cortex in ground squirrels (Citellus erythrogenys)].
The morphological state of the adrenal cortex was studied in Citellus erythogenus in different periods of their year cycle: May, July, January. The morphological criteria of Selye - Stone (1950) and the ratio between dark and light cells were used for estimation of the morphological state of the adrenal cortex. It was shown that a number of morphological parameters under study had distinct seasonal dynamics. The thickness of the glomerular zone and of all the adrenal cortex was maximal in the period of hibernation. It became thinner in the period of waking up and it was minimal in July. Light cells prevailed in the period of waking up, in July the amount of dark and light cells was approximately equal and in winter dark cells prevailed. The comparison of the character of morphological changes of the glomerular and bundle zones shows that the distinctions are pronounced only during deep winter hibernation.
D000302:Adrenal Cortex / Q000033:anatomy & histology*; D000311:Adrenal Glands / Q000033:anatomy & histology*; D000818:Animals; D006605:Hibernation; D012589:Sciuridae / Q000033:anatomy & histology*; D012621:Seasons
Sezonnye morfologicheskie osobennosti stroeniia kory nadpochechnikov u krasnoshchekikh suslikov (Citellus erythrogenes)