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Journal of Experimental Biology 35,824-831 (1958)
Published by Company of Biologists 1958

The Effect of Temperature Changes on the Thyroid-Pituitary Relationship in Teleosts

P. Y. FORTUNE 1

1 Department of Zoology, University of Glasgow; Department of Zoology, University College of Wales, Aberystwyth

1. It is confirmed that TSH has a more marked effect on the teleost thyroid at high temperatures.

2. The secretion of TSH is increased at high temperatures.

3. The temperature to which the animal is subjected prior to the experiment has no long-term effect on thyroid activity.

4. The thyroid-pituitary relationship is affected by temperature changes, and it is suggested that the TH:TSH ratio may be set at different levels by altering the environmental temperature.






© The Company of Biologists Ltd 1958