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Sarkar, S., Sengupta, A. S. S., Chaudhuri-Sengupta, S. & Maiti, B. R. (2007) Thyroid responses to altered photoperiod in the soft-shelled turtle Lissemys punctata punctata BONNATERRE. Acta biologica Hungarica, 58 11–19. 
Added by: Sarina (16 Dec 2008 20:27:07 UTC)   Last edited by: Sarina (11 Oct 2014 13:11:30 UTC)
Resource type: Journal Article
DOI: 10.1556/ABiol.58.2007.1.2
BibTeX citation key: Sarkar2007a
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Categories: Englisch = English
Keywords: Parietalorgan = Parietal Organ, Schildkröten = Turtles, Sehvermögen = Visual Perception
Creators: Chaudhuri-Sengupta, Maiti, Sarkar, Sengupta
Collection: Acta biologica Hungarica
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The aim of the current investigation was to investigate the effect of photoperiod on thyroid activity in soft-shelled turtles (Lissemys punctata punctata). Thirty days exposure of short photoperiod with 2L:22D increased relative weight, follicular epithelial height and peroxidase activity of the thyroid gland; whereas exposure of long photoperiod with 22L:2D for 30 days showed reversed changes to those of the short photoperiod in adult female turtles. These findings indicate that short photoperiod stimulates thyroid activity and long photoperiod inhibits its activity in soft-shelled turtles. It is suggested that photoperiod exerts its action on thyroid activity presumably via gonads and/or pineal-gonadal axis in turtles.
Added by: Sarina  Last edited by: Sarina
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