[KSCI] Korea Science Citation Index Service

Characteristics of Spawning Sites in the Natural Environment of the Korean Endemic Species, Liobagrus somjinensis (Siluriformes: Amblycipitidae) in the Yocheon (stream), Seomjingang (river), Korea

Kim, Hyeong Su (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University)
Kim, Su Hwan (National Institute of Ecology)
Park, Jong Young (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University)

Publication Information

Korean Journal of Ichthyology / v.27, no.4, 2015 , pp. 300-305 More about this Journal

Abstract

The characteristics of 11 spawning sites in the natural environment of the Korean endemic species, Liobagrus somjinensis were investigated in the Yocheon (stream) of Seomjingang (river), located in Sikjeong-dong, Namwon-si, Jeollabuk-do, Korea from May to June 2015. The spawning sites had largely two parts, the upper region close to the surface of the waters and under region at bottom: the upper part was covered with a large and flat boulder over about 256 mm in size, whereas the under part consisted mainly of pebbles and sand. The large boulder put on the upper region may be seen as a bulwark for guarding eggs laid at the under (bottom) region. All the sites under the boulder showed a similar structure having a small hollow filled with an egg mass and an individual (male). The spawning bottoms left clean having no any benthic invertebrates and detritus. The egg shape was spherical, yellow and covered with a transparent membrane and the egg size was $3.31{\pm}0.15mm$ (n=30) in diameter. The development stage of each egg mass under the boulder was almost same from morula stage to formation stage of eye lens. The average number of eggs in 11 spawning sites was $121{\pm}35.5$ (84~176) and the average number of female fecundity in ovary was $143{\pm}31.3$ (110~232).

Keywords

Liobagrus somjinensis; spawning site; Yocheon;

Citations & Related Records

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