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- Title
Cold and dark or warm and light: variations on the theme of environmental control of reproduction.
- Authors
Pankhurst, N.W.; Porter, M.J.R.
- Abstract
Seasonality is a common feature of teleost reproduction and is most marked at higher latitudes. Seasonal cycles are principally entrained by photoperiod and temperature but a range of other variables including lunar phase and social interaction may also operate. Photoperiod information is transduced through the light inhibition of pineal melatonin synthesis but the mechanism by which this regulates the reproductive endocrine system is not clear. There is less information on the specific effects of temperature but these are likely to involve effects on expression and activity of regulatory proteins. Environmental regulation of high latitude species appears to operate across a hierarchy of variables with photoperiod then temperature as primary drivers, whereas in tropical habitats, the hierarchy may be inverted.
- Subjects
EFFECT of light on reproduction; PHOTOPERIODISM; PHYSIOLOGICAL effects of light; BIOLOGICAL rhythms; MELATONIN; PINEAL gland secretions
- Publication
Fish Physiology & Biochemistry, 2003, Vol 28, Issue 1-4, p385
- ISSN
0920-1742
- Publication type
Article
- DOI
10.1023/B:FISH.0000030602.51939.50