Journal of the Korean Society of Tobacco Science (한국연초학회지)

The Korean Society of Tobacco Science (한국연초학회)
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Spermatogenesis and Chromosome Number of the Tobacco Budworm Helicoverpa assulta Guenee (Lepidoptera: Noctuidae)

담배나방(Helicoverpa assulta: 인시목 밤나방과)의 정자형성 과정과 염색체수

  • 유종명 (한남대학교 이과대학 생물학과) ;
  • 정성은 (한남대학교 이과대학 생물학과) ;
  • 박희윤 (한남대학교 이과대학 생물학과) ;
  • 채순용 (한국인삼연초연구원) ;
  • 김상석 (한국인삼연초연구원)
  • Published : 1996.06.01
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Abstract

The spermatogenesis and chromosome number were investigated in the pupal testes of Helicouerpa assulta Guenee by light microscopy. During the spermatogenesis, each bundle of P8(256) sperms developed by 6 mitotic and 2 meiotic spermatogonial divisions. From the early stage of spermatogenesis, it was distinguishable between two kinds of sperm differentiation, eupyrene and apyrene spermatogenesis, which are characteristic in Lepidoptera, by the differences in nuclear shape and cell distribution in immature spermatocyst. Through the followed spermiogenesis, the spermatocysts were developed into two kinds of mature cyst, a streamline-shaped eupyrene cyst with nucleated sperms of thready head or a long spindle-shaped apyrene cyst with anucleated sperms of cylindrical head. As the results off chromosomal analysis at metaphase of the spermatogonial mitosis and spermatocytic meiosis, the chromosome number were 2n=6a/n=31, respectively, and no variation between individuals.

Keywords

References

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