Journal ArticleDOI
Effect of pinealectomy on photoperiodic gonadal response of Indian palm squirrel, Funambulus pennanti
C. Haldar-Misra,M. Srivastava +1 more
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The role of the pineal gland in mediating the effects of photoperiod on the reproductive axis is not well established in tropical mammals, but when Indian palm squirrels (Funambulus pennanti) were exposed to sunlight, they showed marked changes in their sexual behaviour.Abstract:
The role of the pineal gland in mediating the effects of photoperiod on the reproductive axis is not well established in tropical mammals. Indian palm squirrels (Funambulus pennanti) were exposed t...read more
Citations
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Journal ArticleDOI
Relationship between the annual rhythms in melatonin and immune system status in the tropical palm squirrel, Funambulus pennanti.
TL;DR: It is suggested that MEL is immuno-enhancing for this tropical squirrel, and plays an important role in the maintenance of its immunity in accordance with the seasonal changes in environmental factors and gonadal status.
Journal ArticleDOI
Pineal Gland and Humidity Effects on Testicular Function of the Indian Palm Squirrel, Funambulus pennanti
Chandana Haldar,Nayni Saxena +1 more
TL;DR: Results indicate that the pineal gland may be implicated in mediating the humdity information to control the male gonadal function in the Indian palm squirrel, Funambulus pennanti.
Journal ArticleDOI
Temporal synergism of neurotransmitter affecting drugs and seasonal reproductive responses of Indian Palm Squirrel, Funambulus pennanti.
TL;DR: It is suggested that response in the present study is not a pharmacological effect of drugs but temporal synergism of neural acitivities affected the seasonality of reproduction as only 12-hour-relation of 5-HTP and L-DOPA maintained breeding activity during post reproductive phase of annual gonad cycle in Palm Squirrel.
Journal ArticleDOI
Elimination of testicular regression by 12-hr temporal relationship of serotonergic and dopaminergic activity in Indian palm squirrel, Funambulus pennanti.
TL;DR: It is concluded that specific phase relation (12-hr) between circadian serotonergic and dopaminergic oscillations may induce breeding condition in regressing gonad of Indian Palm Squirrel during post-reproductive phase of annual gonadal cycle.
Journal ArticleDOI
Suppression of annual testicular development in Indian Palm Squirrel, Funambulus pennanti by 8 hr temporal relationship of serotonin and dopamine precursor drugs
TL;DR: Results indicate that induced suppression of gonadal function in a fashion similar to seasonal regression leading to non-breeding condition is the consequence of specific phase relationship (8 hr) between serotonergic and dopaminergic activities and not due to Serotonin or dopamine alone.
References
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Journal ArticleDOI
The Pineal Gland and Mammalian Photoperiodism
Bruce D. Goldman,Janet M. Darrow +1 more
TL;DR: The mammalian pineal gland appears to be a major endocrine component in the regulation of photoperiodic responses and the changes in secretion pattern convey information about daylength from neural components of the circadian system to the reproductive system, and probably to other physiological systems.
Journal ArticleDOI
Photoperiodic regulation of neuroendocrine-gonadal activity.
Journal ArticleDOI
Effecr of light and temperature on the endocrine system of the golden hamster Mesocricetus auratus waterhouse)
TL;DR: Exposure of male hamster to short photoperiods or low temperatures for 2, 4 and 6 weeks inhibits normal increases in body weight, atrophy of the gonads characterized by increased cholesterol concentration, and by histological and histochemical appearance, and an increase in brown fat weight.
Journal ArticleDOI
The interaction of castration and photoperiod in the regulation of hypophyseal and serum gonadotropin levels in male golden hamsters.
TL;DR: Exposure to short days renders the hypothalamic-hypophyseal neuroendocrine system governing gonadotropin release relatively insensitive to gonadal steroid hormone feedback, but exposure to nonstimulatory photoperiods does not alter the increased hypophyneal LH and FSH content observed after castration.
Related Papers (5)
Pineal Gland and Humidity Effects on Testicular Function of the Indian Palm Squirrel, Funambulus pennanti
Chandana Haldar,Nayni Saxena +1 more
Photoperiod–Testicular–Immune Interaction in a Seasonal Breeder Indian Palm Squirrel Funambulus pennanti During the Reproductively Inactive and Active Phases
Raise Ahmad,Chandana Haldar +1 more