Melatonin is secreted only during night, irrespective of the habitat of an organism and the
site of its synthesis and secretion, and hence known as “darkness hormone”. Elevated …

The present communication is an attempt to demonstrate the influence of melatonin on the
action of maturation inducing hormone (MIH) on the maturation of oocytes in carps. The …

The physiological significance of melatonin in the regulation of annual testicular events in a
major carp Catla catla was evaluated through studies on the effects of graded dose (25, 50 …

In the present study, we asked the question whether physiological responses to day length
of migratory redheaded bunting (Emberiza bruniceps) and nonmigratory Indian weaver bird …

Young adult male rats, maintained either in an LD 12: 12 or in continuous illumination (LL)
for one week, were given a single injection of 25 μg melatonin/100 g body wt or ethanolic …

Previous studies show that, in birds, pineal melatonin is important for circadian rhythmicity,
and circadian rhythms mediate photoperiodic effects. The effect of pinealectomy or …

The pineal gland, shaped somewhat like a pinecone, is a small organ that lies deep in the
brain of mammals, but is superficially placed in the brain of nonmammal vertebrates. In …

We investigated whether pineal is part of the circadian clock system which regulates
circadian rhythms of activity and photosensitivity in the Indian weaver bird (Ploceus …

The effect of melatonin, methoxytryptophol (ML), methoxytryptamine (MT) and
parachlorophenylalanine (p-CPA) on the mass and histology of the testes and the adrenal …

The pinealocytes in male roseringed parakeets (Psittacula krameri) were studied following
bilateral castration and/or therapeutic administration of testosterone during the preparatory …