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Ecology of Koreocobitis rotundicaudata (Cobitidae) in the Naerin Stream, Korea  

Byeon, Hwa-Kun (Environmental Research Institute Kangwon National University)
Publication Information
Korean Journal of Ichthyology / v.19, no.4, 2007 , pp. 299-305 More about this Journal
Abstract
Ecological characteristics of Koreocobitis rotundicaudata was investigated in the mid-upper part of the Naerin stream in Hongcheon gun, Gangwon do, Korea from April 2006 to March 2007. It inhabited mostly on the cobble and pebble bottoms with water-current velocities of 0.3~0.8 m/sec and depths of 30~80 cm. The sex ratio of female to male was 1 : 0.78. It was presumed that the spawning season was from May to June with water temperatures $20.1{\sim}23.1^{\circ}C$. Sexually matured individuals appeared over the two years of age. Body length frequencies indicated that the 40~69 mm group is over one year old, the 70~109 mm over two years old, and 110~142 mm over three years old. The average number of eggs in the ovaries was 1,365. Main prey materials were Ephemeroptera and Chironomidae mostly.
Keywords
Koreocobitis rotundicaudata; spawning season; stomach content;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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