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Some aspects of the roles of light intensity and the daily length of exposure to light in the sexual photoperiodic activation of the male starling

โœ Scribed by Burger, J. Wendell


Publisher
John Wiley and Sons
Year
1939
Tongue
English
Weight
503 KB
Volume
81
Category
Article
ISSN
0022-104X

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โœ Burger, J. Wendell ๐Ÿ“‚ Article ๐Ÿ“… 1940 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 706 KB

Bissonnette ('30 et. seq.) first showed for the male starling that periods of artificial illumination, usually of about 6 hours when added daily to natural fall and winter day-lengths, will induce a precocious spermatogenesis. In an opposite direction, a reduction in the daily length of exposure to