Regulation of annual weight cycles in reindeer and other cervids

Seasonal changes in weight, food intake and metabolic rate are characteristic of reindeer and other northern ungulates. This article reviews relationships between endocrine and weight cycles in reindeer and other cervids, and the effect of manipulations with endocrine cycles upon the weight cycle. I...

Full description

Bibliographic Details
Published in:Polar Research
Main Author: Ryg, Morten
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 2010
Subjects:
Online Access:https://polarresearch.net/index.php/polar/article/view/2566
https://doi.org/10.3402/polar.v1i3.6992
Description
Summary:Seasonal changes in weight, food intake and metabolic rate are characteristic of reindeer and other northern ungulates. This article reviews relationships between endocrine and weight cycles in reindeer and other cervids, and the effect of manipulations with endocrine cycles upon the weight cycle. It appears that the secretions of most endocrine glands change throughout the year, either as a result of nutritional changes or of an inherent seasonal rhythm. It is suggested that the weight and metabolic cycles are secondary to an appetite cycle that is hormonally regulated. The hormonal control may include several hormones: sex steroids, thyroid hormones, and prolactin.