Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Freshwater Habitats of Pectinatella magnifica (Leidy 1851) Living in South Korea

낙동강 본류에 출현하는 담수 태형동물 Pectinatella magnifica (Leidy 1851)의 서식환경 연구

  • Jeong, Hyungi (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment) ;
  • Lee, Kyung-Lak (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment) ;
  • Choi, Byoung-ki (Department of Molecular Biology, Dongeui University) ;
  • Kwon, Heongak (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment) ;
  • Park, Hae-Kyung (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment) ;
  • Jeong, Gang-yong (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment) ;
  • Yu, Jae Jeong (Nakdong River Environment Research Center, National Institute of Environmental Research, Ministry of Environment)
  • 정현기 (국립환경과학원 낙동강물환경연구소) ;
  • 이경락 (국립환경과학원 낙동강물환경연구소) ;
  • 최병기 (동의대학교 분자생물학과) ;
  • 권헌각 (국립환경과학원 낙동강물환경연구소) ;
  • 박혜경 (국립환경과학원 낙동강물환경연구소) ;
  • 정강영 (국립환경과학원 낙동강물환경연구소) ;
  • 유재정 (국립환경과학원 낙동강물환경연구소)
  • Received : 2015.06.26
  • Accepted : 2015.09.07
  • Published : 2015.09.30
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Abstract

In order to investigate the occurrence of Pectinatella magnifica in Nakdong River, extensive series of sampling was conducted through July to November of 2014. Results revealed that these species show preference to attach themselves on natural substrates over artificial substrates. P. magnifica does not show preference for specified substrates, but itappearthat availability of substrates determines their specific distribution. Considering that most commonly found substrates in Nakdong River were natural substrates such as dead twig, woody plants or aquatic plants, it is possible that high availability of substrates is one of the principal factors which increase the rates of growth and distribution of P. magnifica.

본 연구는 낙동강 본류에 서식하는 Pectinatella magnifica의 출현양상을 조사하기 위해 발생시기인 2014년 7월~11월 동안 기본 분포조사와 출현밀도가 높은 지역을 대상으로 집중조사를 실시하였다. 그 결과, 낙동강 본류 구간 내 Pectinatella magnifica의 부착기질은 인공적으로 형성된 기질에서 12.3%, 자연기질에서 87.7%로써 자연기질에서 매우 높게 확인되었으나 자연기질에 포함된 식물군락의 특정 종에 따른 선호하는 정도는 유의한 차이를 보이지 않았다. 반면 본 조사 결과에서는 고착대상으로 하는 기질의 분포 정도의 차이는 P. magnifica의 분포 차이에 영향을 미치고 있음을 보여주었다. 그러므로 태형동물이 선호하는 출현기질의 증가는 P. magnifica의 성장 및 분포에 영향을 미치는 요인 중 하나로써 작용될 것으로 사료된다.

Keywords

References

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