The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
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Sexual and Males Dimorphism of Rhinogobius brunneus (Pisces: Gobiidae)

밀어, Rhinogobius brunneus (Pisces: Gobiidae)의 성적 이형 및 수컷의 이형

  • Song, Ho-Bok (Division of Life Sciences, College of Natural Sciences, Kangwon National University) ;
  • Baek, Hyun-Min (Division of Life Sciences, College of Natural Sciences, Kangwon National University) ;
  • Son, Yeong-Mok (Department of Science Education, Seowon University)
  • 송호복 (강원대학교 자연과학대학 생명과학부) ;
  • 백현민 (강원대학교 자연과학대학 생명과학부) ;
  • 손영목 (서원대학교 사범대학 과학교육과)
  • Published : 2005.10.31
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Abstract

The sexual dimorphism and intra sexual dimorphism in males of Rhinogobius brunneus were investigated at Jiam stream, a tributary of the Bukhan river from May, 2005. The frequency distributions in standard length were similar for the females and maleLs, but maleSs were smaller than the females and maleLs. The ratio of MaleL (N=79) to males (N=79) was 1 : 0.46. The comparison between female (N=79) and maleL (N=79) gave significant differences (P<0.05) in 18 morphometric characteristics (SNL, AHD, PHD, ML, DL, MW, AHW, IFW, PHW, ED, HL, FDFL, SDFB, CFL, AFB, VFL, PFL, PFB) and 12 characteristics (SNL, AHD, ML, DL, MW, AHW, IFW, PHW, HL, FDFI, CFL, PFB) (P<0.001). Eight morphometric characteristics (SNL, ML, DL, MW, HL, CFL, VFL, PFL) in female (N=36) and males (N=36) had significant differences (P<0.05) and three characteristics (ML, DL, HL) had very significant differences (P<0.001). Eleven characteristics (SNL, AHD, PHD, ML, DL, MW, AHW, IFW, PHW, HL, FDFL) were significantly different in maleL (N=36) and males (N=36) (P<0.05) and six (ML, DL, MW, AHW, HL, FDFL) were very significantly different (P<0.001).

밀어의 성적 이형과 수컷 사이의 이형에 대하여, 2005년 5월에 강원도 춘천시 서면 오월리의 지암천에서 채집한 개체군을 대상으로 조사한 결과는 다음과 같다. Female과 maleL의 체장 분포와 성비는 거의 유사하였으나 males는 40 mm이하의 개체들이 대부분으로 female과 maleL에 비하여 소형 개체들이었으며, maleL : maleS의 비는 1 : 0.46이었다. Female(N=79)과 maleL(N=79)의 계측형질 중 18개 형질(SNL, AHD, PHD, ML, DL, MW, AHW, IFW, PHW, ED, HL, FDFL, SDFB, CFL, AFB, VFL, PFL, PFB)에서 유의한 차이(P<0.05)가 인정되었으며, 이들 중 SNL, AHD, ML, DL, MW, AHW, IFW, PHW, HL, FDFL, CFL, PFB 등 12개 형질은 현저한 차이(P<0.001)를 나타내었다. Female(N=36)과 maleS(N=36)의 비교 결과 8개 형질(SNL, ML, DL, MW, HL, CR, VFL, PFL)에서 유의한 차이(P<0.05)가 인정되었으며, 이들중 ML, DL, HL 등 3개의 측정 형질에서는 현저한 차이(P<0.001)가 있었다. Male(N=36)과 maleS(N=36)의 측정 형질 중 SNL, AHD, PHD, ML, DL, MW, AHW, IFW, PHW, HL, FDFL 등 모두 11개 형질에서 유의한 차이(P<0.05)가 인정되었으며, 11개 형질 중 ML., DL, MW, AHW, HL, FDFL 등 6개 형질은 큰 차이(P<0.001)가 있었다.

Keywords

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