한국어류학회지 (Korean Journal of Ichthyology)

  • 제26권2호
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  • Pages.83-88
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  • 2014
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

묵납자루 Acheilognathus signifer (Pisces: Acheilognathinae)의 곳체두드럭조개와 작은말조개 내 산란 양상

Spawning Pattern in the Freshwater Mussel Lamprotula leai and Unio douglasiae sinuolatus of Acheilognathus signifer (Pisces: Acheilognathina)

  • 김형수 (전북대학교 자연과학대학 생물학과, 부설 생물다양성 연구소) ;
  • 양현 ((주)생물다양성연구소) ;
  • 고재근 (국립생태원) ;
  • 박종영 (전북대학교 자연과학대학 생물학과, 부설 생물다양성 연구소)
  • Kim, Hyeong Su (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University) ;
  • Yang, Hyun (Institute of Biodiversity Research) ;
  • Ko, Jae Geun (Natinoal Institute of Ecology) ;
  • Park, Jong Young (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University)
  • 투고 : 2014.06.06
  • 심사 : 2014.06.25
  • 발행 : 2014.06.30
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초록

멸종위기야생생물 II급이며 한국고유종인 묵납자루 Acheilognathus signifer를 대상으로 2011년과 2013년 4~6월 동안 산란숙주로 곳체두드럭조개를 선호하는 충북 괴산군 청천면 달천 일대 (괴산집단)와 작은말조개를 이용하는 충북 단양군 어상천면 가대천 일대(단양집단)에서 조개 내 산란양상을 조사하였다. 괴산집단의 곳체두드럭조개가 단양집단의 작은말조개보다 각장이 크고 묵납자루의 알 및 자어도 더 많이 보유하고 있었다. 또한, 괴산집단 묵납자루의 산란관 길이가 단양집단보다 길었고 인공 채란 수도 단양집단보다 많았다. 곳체두드럭조개는 4장의 반새 모두를 보육낭으로 사용하였고 작은말조개는 2장의 외반새만을 보육낭으로 사용하였다. 괴산집단 묵납자루는 보육낭이 없는 곳체두드럭조개가 보육낭이 있는 곳체두드럭조개보다 알 및 자어 수가 많았으나 단양집단에서는 보육낭이 없는 작은말조개가 보육낭이 있는 작은말조개보다 알 및 자어 수가 적게 보유하는 상이한 결과를 보였다.

An endemic Korean bitterling, Acheilognathus signifer, known as using freshwater mussels for its spawning activity, much prefers Lamprotula leai in Dalcheon stream (Goesan population) and Unio douglasiae sinuolatus in Gadaecheon (Danyang population) stream, Korea. The spawning pattern between two mussels and one bitterling was carried out in two populations from April to June, 2011 and 2013. L. leai in the Goesan population was bigger shell length and have more eggs, larvae or both with A. signifer than those of U. d. sinuolatus in the Danyang population. Also, A. signifer in the Goesan population appeared to have a longer ovipositor and lay ripen eggs more than those of A. signifer in the Danyang population. Glochidium, a larval stage, of some L. leai in the Goesan population was incubated in all the demibranch, whereas for all of U. d. sinuolatus in the Danyang population was found in the outer demibranch only. For L. leai in the Goesan population, the eggs, larvae or both of A. signifer were much more in the non-breeding mussels (giving no glochidium) than the breeding mussels having the glochidium. For U. d. sinuolatus in the Danyang population, in contrast, the non-breeding mussels have fewer eggs, larvae or both less than the breeding one.

키워드

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