Spawning Period and Spawning Characteristics of Kichulchoia multifasciata (Pisces: Cobitidae) in the Yugokcheon (stream) of Nakdonggang (river) from Korea

낙동강 유곡천에 서식하는 수수미꾸리 Kichulchoia multifasciata (Pisces: Cobitidae)의 산란시기와 산란특성

  • Kim, Hyeong Su (Department of Biological Science and Institute for Biodiversity, College of Natural Sciences, Chonbuk National University) ;
  • Yang, Hyun (Institute of Biodiversity Research)
  • 김형수 (전북대학교 자연과학대학 생물학과, 부설 생물다양성연구소) ;
  • 양현 ((주)생물다양성연구소)
  • Received : 2016.03.15
  • Accepted : 2016.06.23
  • Published : 2016.06.30

Abstract

Spawning period and spawning characteristics of Kichulchoia multifasciata (Pisces: Cobitidae) inhabiting the Yugokcheon (stream) of Nakdonggang (river) were investigated in the area of Segangyo (bridge), Yugok-myeon, Uiryeng-gun, Gyeongsannam-do, Korea from November 2008 to October 2009. The total length of population indicated that 45~55 mm group is one year old, 55~75 mm group is two years old and longer than 75 mm is regarded over three years old in males and 40~55 mm group is one year old, 55~75 mm group is two years old, 75~95 mm group is three years old and longer than 95 mm is considered over four years old in females (January 2009). It has predicted that the spawning period is from May to June (water temperature in the range $21.0{\sim}26.6^{\circ}C$). Sexually matured individuals appeared over the two years old. The number of eggs in the ovaries was 202~747 ($491{\pm}154.0$).

본 연구는 2008년 11월부터 2009년 10월까지 경상남도 의령군 유곡면 세간교 일대 유곡천에서 수수미꾸리의 산란시기와 산란특성에 대해 조사하였다. 수수미꾸리의 연령을 분석한 결과 수컷은 1년생 전장 45~55 mm, 2년생 55~75 mm, 3년생 75 mm 이상, 암컷은 1년생 40~55 mm, 2년생 55~75 mm, 3년생 75~95 mm, 4년생 95 mm 이상으로 추정되었다 (2009년 1월 기준). 산란시기는 5~6월 사이로 추정되었고 (수온 $21.0{\sim}26.6^{\circ}C$) 성적으로 성숙하는 연령은 만 2년생 이상으로 판단되었으며 포란수는 202~747개 ($491{\pm}154.0$)로 나타났다.

Keywords

References

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