Neurohypophysial-adrenal gland responses to water-deprivation in the rose-ringed parakeet
Maiti, B.R.; Ray, D.; Ghosh, A.
Zeitschrift für Mikroskopisch-Anatomische Forschung 90(1): 175-183
1976
ISSN/ISBN: 0044-3107 PMID: 1020418 Document Number: 99517
The relative effects of the neurohypophysis, adrenal cortex and adrenal medulla under dehydration stress were studied in the parakeet. Birds subjected to dehydration for 7 days lost body weight. Neurosecretory material (NSM) was partially depleted from the neurohypophysis. Adrenal gland weight was increased followed by a hypertrophy of the cortical tissue. A fall in adrenal cholesterol and ascorbic acid level was marked. Adrenaline and noradrenaline contents of the adrenal medulla were suppressed as was evident from cytochemical and biochemical findings. The neurohypophysis, adrenal cortex and adrenal medulla are involved in maintaining water homeostasis in this avian species.