Japanese Journal of Veterinary Research;Volume 21, Number 4

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HISTOLOGISCHE UNTERSUCHUNG DER KINETIK DER SPERMATOGENESE BEIM MINK (MUSTELA VISON) : VI SAMENEPITHELWELLE UNMITTELBAR VOR DEN PAA RUNGSZEITEN (7. UND 19. LEBENSMONAT)

TIBA, Tosiro

Permalink : http://hdl.handle.net/2115/2034
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Abstract

In order to observe the wave of the seminiferous epithelium in situ, longitudinal sections were made from dissected portions of the seminiferous tubules isolated from the testes of two different generations of mink, i.e. immature (7 months old) and adult (19 months old) minks. The results are as follows : The first signs of the establishment of the wave pattern develop at the beginning or recommencement of spermatogenesis. It has also been definitely shown that there is a large number of remarkable cellular associations whose origin can not be explained directly from our knowledge of the wave during the breeding season. Moreover, very irregularly arranged segments were found with extra ordinary frequency. This indicates that these segments do not follow the law of continuity of the segmental order in the breeding season. On the basis of these results the author has reached the following conclusion : The conditions of construction of the wave in the pre-breeding season are not exactly similar to those during the breeding season.

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