Histological Characteristics of Spermatogenesis in Testes of the Orangutan (Pongo pygmaeus)

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  • オランウータン精巣における精子形成の特徴
  • オランウータンセイソウ ニ オケル セイシ ケイセイ ノ トクチョウ

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To make clear characteristics of spermatogenesis in testes of the orangutan (Pongo pygmaeus), we carried out a histological study using testicular samples from two individuals. Seminiferous epithelia were thick and those with the typical spermatogenetic cell arrangement were predominant. The interstitial tissue was abundant with many collagen fibers. The acrosomic system was clearly observed. We noticed twelve steps in the spermiogenesis. We could identify ten stages in a seminiferous cycle. We discussed characteristics of spermatogenetic patterns in the orangutan, comparing with the human, chimpanzee and gorilla.

Journal

  • Primate Research

    Primate Research 26 (1), 51-58, 2010

    Primate Society of Japan

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