Time and reproductive phase-dependent effects of exogenous melatonin on the pineal gland and ovary of a nocturnal bird, the indian spotted owlet, Athene brama

• Authors: P. Guchhait , Ch. Haldar
• Languages of publication: EN

Abstracts

EN

In a tropical nocturnal bird, the Indian spotted owlet, Athene brama, the intraperitonial injection of an identical amount (20mg/ 100 g b. wt/ day) of exogenous melatonin (MEL) for 15 consecutive days increased the pineal weight and plasma MEL level in sexually active birds while it decreased them in inactive birds more potently when injected in the evening (18.30-19.30 h) rather than the morning (0500-0600 h). On the other hand, more efficiently than the morning hour treatment, the evening hour MEL injection decreased the ovary weight and plasma estradiol and progesterone levels both in sexually active and inactive birds, but more potently in active than inactive birds. Thus, the exogenous MEL showed the time and reproductive phase dependent effects on the pineal gland and the ovary of this nocturnal bird.

Keywords

EN

MELATONIN; OVARY; PINEAL GLAND; REPRODUCTIVE PHASE; SEX STEROID; SPOTTED OWLET

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences
• Journal: Folia Biologica
• Year: 2000
• Volume: 48
• Issue: 3-4
• Pages: 91-96

Contributors

author

P. Guchhait

author

Ch. Haldar

• Document Type: ARTICLE
• Publication order reference: Ch. Haldar, Pineal Research Laboratory, Department of Zoology, Banaras Hindu University, Varanasi-221 005, India, e-mail: [e-mail]