Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Fluctuation of Introduced Fish and Characteristics of the Fish Community in Lake Soyang

소양호의 도입어종 변동과 어류 군집 특성

  • Received : 2015.03.19
  • Accepted : 2015.05.22
  • Published : 2015.06.30
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Abstract

The fish community and introduced fish were surveyed at eight stations of Lake Soyang from March to October, 2013. A total of 41 species of twelve families were collected from the survey stations and among them, two species: Hemibarbus mylodon and Siniperca scherzeri (albino type) were identified as natural monument. There were fifteen Korean endemic species (36.6 %) including Acheilognathus yamatsutae. When compared with previous data (2003), A. yamatsutae, Pseudorasbora parva, Sarcocheilichthys nigripinnis morii, Sarcocheilichthys variegatus wakiyae, Orthrias nudus, Leiocassisuss ussuriensis, Oncorhynchus mykiss, and Micropterus salmoides appeared new in the lake. Dominant species were Hypomesus olidus (St. 1, 3, 6, 7, 8), Lepomis macrochirus (St. 2, 4) and Zacco platypus (St. 5). Of the 12 introduced species fishes in Lake Soyang, Anguilla japonica, Hemiculter eigenmanni, H. nipponensis, Rhinogobius giurinus and Tridentiger brevispinis were introduced and released from other native river water zones in Korea but Cyprinus carpio (Israeli type), Carassius cuvieri, O. mykiss, Ictalurus puntatus, L. macrochirus, and M. salmoides originated from foreign countries.

소양호에 서식하는 어류와 도입어종의 서식 실태를 파악하기 위해 8개 지점에서 2013년 3월부터 10월까지 조사를 실시하였다. 채집된 어류는 총 12과 41종이었다. 천연기념물에 속하는 어종은 어름치와 황쏘가리 2종 이었다. 한반도 고유종은 줄납자루을 포함하여 15종으로 고유화빈도가 36.6%를 나타내었다. 2003년 이후 본 조사에서 새로 출현한 어종은 줄납자루, 참붕어, 중고기, 참중고기, 대륙종개, 대농갱이, 무지개송어, 배스 등 이었다. 우점종은 빙어(St. 1, 3, 6, 7, 8), 블루길(St. 2, 4), 피라미(St. 5) 등 이었다. 도입된 어종은 총 12종으로 국내 타수역에서 도입 방류한 어종은 뱀장어, 치리, 대농갱이, 빙어, 갈문망둑, 민물검정망둑 등 6종 이었고 국외에서 도입된 어종은 이스라엘잉어, 떡붕어, 무지개송어, 찬넬동자개, 블루길, 배스 등 6종 이었다.

Keywords

References

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