Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Characteristics of Fish Fauna and Community Structure in Wangpicheon

왕피천 어류상 및 어류군집의 특성

  • Hong, Yang-Ki (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS)) ;
  • Kim, Kyeong-Hwan (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS)) ;
  • Kim, Kyeong-Moo (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS)) ;
  • Lim, Gwang-Ho (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS)) ;
  • Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS)) ;
  • Lee, Wan-Ok (Inland Fisheries Research Institute, National Institute of Fisheries Science (NIFS))
  • 홍양기 (국립수산과학원 중앙내수면연구소) ;
  • 김경환 (국립수산과학원 중앙내수면연구소) ;
  • 김경무 (국립수산과학원 중앙내수면연구소) ;
  • 임광호 (국립수산과학원 중앙내수면연구소) ;
  • 송미영 (국립수산과학원 중앙내수면연구소) ;
  • 이완옥 (국립수산과학원 중앙내수면연구소)
  • Received : 2016.06.12
  • Accepted : 2016.10.26
  • Published : 2016.10.30
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Abstract

We surveyed bimonthly from April to October 2015 to understand the fish fauna and community structure in Wangpicheon. The collected species during the survey period were 40 species belonging to 15 families. Dominant species by number were Zacco koreanus (31.3%) and Rhynchocypris oxycephalus (14.7%). In biomass, the dominant species were Z. koreanus (29.2%) and Coreoperca herzi (8.6%). Also, nine endemic species (22.5%) including Squalidus multimaculatus and two endangered species (Lethenteron reissneri, Cottus koreanus) were identified. It was identified one introduced species (Oncorhynchus mykiss) from foreign countries for aquaculture. Compared with previous data, nine species were newly identified including L. reissneri, S. gracilis majimae, Pseudobagrus fulvidraco, O. mykiss, Chelon haematocheilus, Siniperca scherzeri, Acanthogobius lactipes, Luciogobius guttatus and Channa argus. Seven species (Rhodeus ocellatus, S. gracilis majimae, Hemibarbus longirostris, Pseudogobio esocinus, Microphysogobio yaluensis, Hemiculter eigenmanni and Cobitis hankugensis) introduced from other native waters in Korea were estimated. According to the analysis of the habitat characteristics of major migratory species (Tribolodon hakonensis, O. keta and Plecoglossus altivelis), O. keta was observed at station 11 and T. hakonensis at station 7, 10 and 11. These fishes have been mainly identified in the downstream. However P. altivelis was widely distributed from station 3 to 11. In the comparison of average standard length of P. altivelis at each station during the same period, populations collected from station 3 and 5 which are mid-upper area of the stream were $125.8{\pm}34.2mm$. Their growth was good compared with those collected from station 8 and 11 (mid-lower area): $80.2{\pm}16.6mm$. This difference in length comes from the artificial structures including weir, thus it is necessary to create a fishway that enables P. altivelis to pass around barriers for free movement and resource management.

왕피천에 출현하는 어류상 및 어류군집의 특성을 파악하고자 2015년 4월부터 10월까지 조사하였다. 본 조사에서 확인된 종은 모두 15과 40종이었으며, 개체수 우점종은 Zacco koreanus(31.3%) 이었고, 아우점종은 Rhynchocypris oxycephalus(14.7%) 이었다. 생체량 우점종은 Z. koreanus(29.2%) 이었고, 아우점종은 Coreoperca herzi(8.6%) 이었다. 한국고유종은 Squalidus multimaculatus 등 9종(22.5%) 이었고, 멸종위기종은 Lethenteron reissneri와 Cottus koreanus 이었다. 양식용으로 국외에서 도입된 Oncorhynchus mykiss 1종이 확인되었다. 이전 연구보고 이후 본 조사에서 처음 출현이 확인된 종은 L. reissneri, S. gracilis majimae, Pseudobagrus fulvidraco, O. mykiss, Chelon haematocheilus, Siniperca scherzeri, Acanthogobius lactipes, Luciogobius guttatus 및 Channa argus 등 9종이었다. 서식이 확인된 Rhodeus ocellatus, S. gracilis majimae, Hemibarbus longirostris, Pseudogobio esocinus, Microphysogobio yaluensis, Hemiculter eigenmanni 및 Cobitis hankugensis 등 7종은 국내 다른 수계에서 이입된 것으로 추정된다. 주요 회유종인 Tribolodon hakonensis, O. keta 및 Plecoglossus altivelis을 대상으로 서식특성을 분석한 결과, O. keta는 St. 11, T. hakonensis는 St. 7, 10 및 11 등 주로 하류에서 확인되었으나 P. altivelis은 St. 3~St. 11까지 넓게 분포하였다. 한편 조사 지점에 따라 동일한 시기에 P. altivelis의 평균체장 차이를 비교한 결과, 중 상류(St. 3과 St. 5)에서 채집한 개체들의 체장은 $125.8{\pm}34.2mm$로 중 하류(St. 8과 St. 11)에서 채집된 개체의 $80.2{\pm}16.6mm$성장이 양호하였다. 이는 보와 같은 인공구조물에 의한 결과로, P. altivelis의 자유로운 이동 및 자원관리를 위하여 적절한 형태의 어도가 필요하였다.

Keywords

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