Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Spawning Behavior of Microphysogobio koreensis(Cyprinidae) in Korea

모래주사 Microphysogobio koreensis(Cyprinidae)의 산란행동

  • Park, Jong Sung (Research Center for Endangered Species, National Institute of Ecology) ;
  • Yoon, Seung Woon (Department of Biological Science, College of Natural Science, Chonbuk National University) ;
  • Kim, Jae Goo (Department of Ecology Research, Alpha Research Ecology Institue) ;
  • Kim, Hyun Tae (Department of Biological Science, College of Natural Science, Chonbuk National University) ;
  • Park, Cheol Woo (Department of Ecology Research, Alpha Research Ecology Institue) ;
  • Kim, Hyeong Su (Advanced Aquaculture Research Center, National Institute of Fisheries Science) ;
  • Park, Jong Young (Department of Biological Science, College of Natural Science, Chonbuk National University)
  • 박종성 (국립생태원 멸종위기종복원센터) ;
  • 윤승운 (전북대학교 자연과학대학 생명과학과) ;
  • 김재구 (알파생태연구원) ;
  • 김현태 (전북대학교 자연과학대학 생명과학과) ;
  • 박철우 (알파생태연구원) ;
  • 김형수 (국립수산과학원 첨단양식실증센터) ;
  • 박종영 (전북대학교 자연과학대학 생명과학과)
  • Received : 2021.01.22
  • Accepted : 2021.02.24
  • Published : 2021.03.31
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Abstract

Spawning behavior of the endangered Korean fish, Microphysogobio koreensis, was investigated in the Seomjingang (river), Imsil-gun, South Korea, during the spawning season, April to May 2012. The mating system of M. koreensis, a broadcast spawner, was a primitive spawning mode, and involved one male and one female, unlike group spawning fishes. Spawning behavior of M. koreensis in the wild were observed in eight patterns as resting, male chase, body beating, parallel swim, female withdrawal, male competition, spawning and not guard while spawning behavior in the glass tank were verified in six patterns as resting, male chase, body beating, parallel swim, spawning and not guard. In particular, a behavioral attempt of the pre-spawning stage showed more frequently in the wild than in the glass tank. We assume that difference of spawning behavior might be implication on behavioral restrictions in small and narrow indoor glass tank.

멸종위기 담수어류 모래주사의 산란행동을 조사하기 위해 산란시기인 2012년 4월부터 5월까지 전북 임실군의 섬진강 일대에서 연구를 실시하였다. 모래주사의 산란은 무리산란 (group spawning)하는 어류와 달리 암수 한 쌍에 의해 이루어졌으며, 수중으로 대량의 생식세포를 방출하여 산란하는 원시적인 생식모드 (broadcast spawner)로 확인되었다. 자연에서 모래주사의 산란행동은 휴식(resting), 유혹(male chase), 자극(body beating), 평행유영(parallel swim), 암컷의 산란회피(female withdrawal), 경쟁(male competition), 산란(spawning), 산란 후 난을 보호하는 행동은 보이지 않아(not guard) 총 8가지 행동을 보인 반면 수조 내에서는 휴식, 유혹, 자극, 평행유영, 산란, 산란 후 난을 보호하지 않은 6가지 행동이 관찰되었다. 특히 산란전 행동은 수조 내에서 보다 자연상태에서 더 빈번하게 일어났다. 이와 같은 행동적 차이는 작고 좁은 수조에서의 행동적 제약에 의한 결과로 추정된다.

Keywords

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