Abstract
BURGER1 asserts that the “problem of refractoriness is perhaps the greatest relatively unsolved problem in reproduction”. This problem, except in its ultimate details, may, in fact, have been solved2. It can be said that the “refractory period” (of Bissonnette3) or “dead sexual season” (of Polikarpova4) in seasonal birds is that part of the testis cycle during which the tubules are in a state of post-spermatogenetic lipoidal metamorphosis, and before the newly regenerated Leydig cells of the interstitium have become sufficiently mature and lipoidal to respond to neurohumoral influences initiated by factors in the environment.
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References
Burger, W., Wilson Bull., 61, 4, 211 (1949).
Marshall, A. J., Quart. J. Mic. Sci., 90, 3, 265 (1949).
Bissonnette, T. H., Wilson Bull., 49, 241 (1937).
Polikarpova, E., C.R. (Doklady) Acad. Sci. U.S.S.R., 27, 91 (1940).
Morley, A., Ibis, 132 (April 1943).
Bissonnette, T. H., and Wadlund, A. P., J. Exp. Biol., 9, 4, 339 (1932).
Riley, G. M., Proc. Soc. Exp. Biol. and Med., 34, 331 (1936).
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MARSHALL, A. Mechanism and Significance of the ‘Refractory Period’ in the Avian Testis Cycle. Nature 166, 1034–1035 (1950). https://doi.org/10.1038/1661034b0
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DOI: https://doi.org/10.1038/1661034b0
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