국망산 일대의 어류상

Abstract

To clarify the structures and functions of ecosystem and to establish the methods for the conservation of natural resources in the Mt. Kookmang, the author surveyed fish fauna at 4 stations from July 21 to 23, 2007. The collected species during the surveyed period were 13 species belonging to 4 families. Korean endemic species were 6 : Coreoleuciscus splendidus, Squalidus gracilis majimae, Microphysogobio yaluensis, Iksookimia koreensis, Liobagrus andersoni and Odontobutis interrupta, which showed a ratio of 46.2% in all collected species. According to relative abundance in the studies area, Zacco platypus (37.7%), Rhynchocypris oxycephalus (27.0%) and S. gracilis majimae (17.7%) dominated. Pseudorasbora parva, Coreoleuciscus splendidus, Misgurnus anguillicaudatus, Liobagrus andersoni and Odontobutis interrupta were rare in the surveyed areas, which occupied less than 1% in relative abundance. Dominant species were Zacco platypus (St. 1, 4), Carassius auratus (St. 2) and Rhynchocypris oxycephalus (St. 3). According to the diversity, evenness and richness indices, St. 4 may more stable in fish community than others.