북방전복 Haliotis discus hannai 정자의 미세구조적 분화

The differentiation process of male germ cells and sperm morphology of the abalone Haliotis discus hannai were described in ultrastructure. The differentiation process of sperm was divided into four stages: spermatogonium, spermatocyte, spermatid and sperm. The process of differentiation from sperma...

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Published in한국해양생명과학회지 Vol. 6; no. 1; pp. 23 - 30
Main Authors 김혜진, 김현진, 신소령, 백은란, 이정식, Kim, Hyejin, Kim, Hyeon Jin, Shin, So Ryung, Baek, Eun Ran, Lee, Jung Sick
Format Journal Article
LanguageKorean
Published (사)한국해양생명과학회 01.06.2021
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ISSN2508-7134
DOI10.23005/KSMLS.2021.6.1.23

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Abstract The differentiation process of male germ cells and sperm morphology of the abalone Haliotis discus hannai were described in ultrastructure. The differentiation process of sperm was divided into four stages: spermatogonium, spermatocyte, spermatid and sperm. The process of differentiation from spermatogonium to spermatocyte did not show significant morphological changes. However, during the spermiogenesis there were distinct morphological changes such as chromatin condensation, morphological changes of the nucleus, and formation of acrosome, midpiece and flagellum. The sperm of the abalone consisted of head, midpiece and tail. The head of approximately 5.3 ㎛ in length was composed of a nucleus of high electron dense and bullet-shaped acrosome. The midpiece was composed of the basal body and mitochondria, and five mitochondria were arranged in single layer around the basal body. The cross section of the tail showed a "9+2" axonemal structure. These morphological and structural features are the result of showing that the sperm of H. discus hannai is a primitive type. 북방전복 Haliotis discus hannai 웅성생식세포의 분화과정과 정자의 형태를 미세구조적으로 기재하였다. 정자의 분화과정은 정원세포기, 정모세포기, 정세포기 및 정자기의 4단계로 구분하였다. 정원세포기에서 정모세포기로의 분화과정은 형태학적 변화가 크지 않았다. 그러나 정자변태과정 동안 염색질 응축, 핵의 형태 변화, 첨체와 중편 및 편모 형성 등의 급격한 형태학적 변화를 나타냈다. 북방전복의 정자는 두부, 중편 및 미부로 구성되며, 두부의 길이는 약 5.3 ㎛로 전자밀도가 높은 핵과 총알형의 첨체로 이루어져 있었다. 중편은 기저체와 미토콘드리아로 구성되어 있었으며, 기저체를 중심으로 5개의 미토콘드리아가 한 층으로 배열되어 있었다. 미부의 횡단면은 "9+2"의 미세소관 구조를 보였다. 이러한 형태 및 구조적 특징은 북방전복의 정자는 원시형(primitive type) 정자임을 보여주는 결과이다.
AbstractList 북방전복 Haliotis discus hannai 웅성생식세포의 분화과정과 정자의 형태를 미세구조적으로 기재하였다. 정자의 분화과정은 정원세포기, 정모세포기, 정세포기 및 정자기의 4단계로 구분하였다. 정원세포기에서 정모세포기로의 분화과정은 형태학적 변화가 크지 않았다. 그러나 정자변태과정 동안 염색질 응축, 핵의 형태 변화, 첨체와 중편 및 편모 형성 등의 급격한 형태학적 변화를 나타냈다. 북방전복의 정자는 두부, 중편 및 미부로 구성되며, 두부의 길이는 약 5.3 μm로 전자밀도가 높은 핵과 총알형의 첨체로 이루어져 있었다. 중편은 기저체와 미토콘드리아로 구성되어 있었으며, 기저체를 중심으로 5개의 미토콘드리아가 한 층으로 배열되어 있었다. 미부의 횡단면은 "9+2"의 미세소관 구조를 보였다. 이러한 형태 및 구조적 특징은 북방전복의 정자는 원시형(primitive type) 정자임을 보여주는 결과이다. The differentiation process of male germ cells and sperm morphology of the abalone Haliotis discus hannai were described in ultrastructure. The differentiation process of sperm was divided into four stages: spermatogonium, spermatocyte, spermatid and sperm. The process of differentiation from spermatogonium to spermatocyte did not show significant morphological changes. However, during the spermiogenesis there were distinct morphological changes such as chromatin condensation, morphological changes of the nucleus, and formation of acrosome, midpiece and flagellum. The sperm of the abalone consisted of head, midpiece and tail. The head of approximately 5.3 μm in length was composed of a nucleus of high electron dense and bullet-shaped acrosome. The midpiece was composed of the basal body and mitochondria, and five mitochondria were arranged in single layer around the basal body. The cross section of the tail showed a "9+2" axonemal structure. These morphological and structural features are the result of showing that the sperm of H. discus hannai is a primitive type. KCI Citation Count: 0
The differentiation process of male germ cells and sperm morphology of the abalone Haliotis discus hannai were described in ultrastructure. The differentiation process of sperm was divided into four stages: spermatogonium, spermatocyte, spermatid and sperm. The process of differentiation from spermatogonium to spermatocyte did not show significant morphological changes. However, during the spermiogenesis there were distinct morphological changes such as chromatin condensation, morphological changes of the nucleus, and formation of acrosome, midpiece and flagellum. The sperm of the abalone consisted of head, midpiece and tail. The head of approximately 5.3 ㎛ in length was composed of a nucleus of high electron dense and bullet-shaped acrosome. The midpiece was composed of the basal body and mitochondria, and five mitochondria were arranged in single layer around the basal body. The cross section of the tail showed a "9+2" axonemal structure. These morphological and structural features are the result of showing that the sperm of H. discus hannai is a primitive type. 북방전복 Haliotis discus hannai 웅성생식세포의 분화과정과 정자의 형태를 미세구조적으로 기재하였다. 정자의 분화과정은 정원세포기, 정모세포기, 정세포기 및 정자기의 4단계로 구분하였다. 정원세포기에서 정모세포기로의 분화과정은 형태학적 변화가 크지 않았다. 그러나 정자변태과정 동안 염색질 응축, 핵의 형태 변화, 첨체와 중편 및 편모 형성 등의 급격한 형태학적 변화를 나타냈다. 북방전복의 정자는 두부, 중편 및 미부로 구성되며, 두부의 길이는 약 5.3 ㎛로 전자밀도가 높은 핵과 총알형의 첨체로 이루어져 있었다. 중편은 기저체와 미토콘드리아로 구성되어 있었으며, 기저체를 중심으로 5개의 미토콘드리아가 한 층으로 배열되어 있었다. 미부의 횡단면은 "9+2"의 미세소관 구조를 보였다. 이러한 형태 및 구조적 특징은 북방전복의 정자는 원시형(primitive type) 정자임을 보여주는 결과이다.
Author 김혜진
Lee, Jung Sick
김현진
이정식
백은란
Baek, Eun Ran
Kim, Hyejin
Kim, Hyeon Jin
신소령
Shin, So Ryung
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Snippet The differentiation process of male germ cells and sperm morphology of the abalone Haliotis discus hannai were described in ultrastructure. The differentiation...
북방전복 Haliotis discus hannai 웅성생식세포의 분화과정과 정자의 형태를 미세구조적으로 기재하였다. 정자의 분화과정은 정원세포기, 정모세포기, 정세포기 및...
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Title 북방전복 Haliotis discus hannai 정자의 미세구조적 분화
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