Literaturdatenbank
Literaturdatenbank |
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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(1), 11–19.
Added by: Admin (14 Aug 2008 20:32:49 UTC) |
| Resource type: Journal Article BibTeX citation key: Sarkar2007 View all bibliographic details  |
Categories: General Keywords: Lissemys, Lissemys punctata, Physiologie = physiology, Schildkröten = turtles + tortoises, Sehvermögen = vision, Trionychidae, Trionyx Creators: Chaudhuri-Sengupta, Maiti, Sarkar, Sengupta Collection: Acta biologica Hungarica |
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| Abstract |
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Trionyx 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.
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