한국발생생물학회지:발생과생식 (Development and Reproduction)

  • 제25권3호
  • /
  • Pages.123-131
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  • 2021
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  • 2465-9525(pISSN)
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  • 2465-9541(eISSN)
한국발생생물학회 (The Korean Society of Developmental Biology)
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Gonadal Abnormality and Intersexuality of Oplegnathus fasciatus (Teleostei: Oplegnathidae) Collected from the Southern Coast of Korea: A Case Report

  • Choi, Ji Sung (Dept. of Aqualife Medicine, Chonnam National University) ;
  • Shin, So Ryung (Dept. of Aqualife Medicine, Chonnam National University) ;
  • Kim, Hyeon Jin (Dept. of Aqualife Medicine, Chonnam National University) ;
  • Kim, Hyejin (Fisheries Seed and Breeding Research Institute, National Institute of Fisheries Science) ;
  • Kim, Yeonghye (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • Lee, Jung Sick (Dept. of Aqualife Medicine, Chonnam National University)
  • 투고 : 2021.05.06
  • 심사 : 2021.08.26
  • 발행 : 2021.09.30
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초록

We report on the gonadal structure abnormality and intersexuality found from a survey regarding the reproductive potential of the rock bream, Oplegnathus fasciatus, along the southern coast of Korea. In total, 448 samples were collected for histological analysis (total length 27.5±6.8 cm; total weight 522.9±385.6 g). The sex ratio (F:M) was 1:0.46 (n=307:141), with 68.5% being females. The frequency of oocyte atresia and ovarian neoplasm in the females was 85.3% and 21.5%, respectively, and the frequency of testicular lobule and cyst deformation and testicular neoplasm in the males was 73.1% and 37.6%, respectively. The scale formation in the ovary and testis was approximately 2.0% for both sexes. The intersexuality was 42.2%, with the intersexuality among females being 49.5%, which was significantly higher than that of males (26.2%). Such findings indicate a negative impact on the reproductive output of the rock bream along the southern coast of Korea; however, a more detailed study is required to ascertain accurate causes.

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