Morphological Variation and Karyotype of the Korean Species of Sticklebacks, (Pisces, Gasterosteridae) in Korea

한국산 큰가시고기과 어류의 형태변이와 핵형

  • Kim, Ik-Soo (Department of Biology, College of Natural Sciences, Chonbuk National University) ;
  • Yoon, Chang-Ho (Department of Biology, College of Natural Sciences, Chonbuk National University) ;
  • Lee, Ji-Hyun (Department of Biology, College of Natural Sciences, Chonbuk National University)
  • 김익수 (전북대학교 자연과학대학 생물학과) ;
  • 윤창호 (전북대학교 자연과학대학 생물학과) ;
  • 이지현 (전북대학교 자연과학대학 생물학과)
  • Published : 1989.12.01

Abstract

Three species of Korean sticklebacks family Gasterosteidae were reviewed based on the specimens of several populations for the study of their morphological variations and taxonomical positions. All specimens of Gasterosteus aculeatus observed have a complte row of lateral plates ranging from thirty-two to thirty-five in number. The low-plate morph regarded as landlocked type is virtually absent. And no difference was recognized among six populations of G. aculeatus in the meristic chracters, i.e. number of vertebrae, gill rakers and finrays. The Pungitius sinensis and P.kaibarae ssp. shown local variations have scutes ranging from 31 to 35, but not clinal in the morphometric characters. But P.sinensis was statistically different from P.kaibarae ssp. in some characters such as the number of dorsal spine rays and vertebrae, and body depth, although their ranges overlapped. No significant taxonomic difference was detected between white from and black from in dorsal spinous membrane of P.kailbarae ssp. Although these three species of Korean sticklebacks have the same diploid chromosome number (2N=42), G. aculeatus is obviously different from the two species of genus Pungitius in their karyotype ; G. aculeatus consists of six metacentrics, six submetacentrics, and thiry subtelo-acrocentrics, and both P.sinensis and P.kaibarae ssp. have four metacentrics, six submetacentrics, and thirty-four subtelo-acrocentrics.