Cytogenetical study of fishes from coastal area in Jo island, Busan, Korea I. Parapercis sexfasciata (Temminck et Schlegel), Sebastiscus marmoratus (Cuvier) and Pleuronectes yokohamae (Günther)

The present study was supported by Karyotype analysis and DNA content determination of three species of saddled weever, Parapercis sexfasciata (Temminck et Schlegel), marbled rockfish, Sebastiscus marmoratus (Cuvier) and marbled sole, Pleuronectes yokohamae (Günther) from coastal area in Jo island, Busan, Korea were performed. The karyotype of P. sexfasciata has a diploid number of 2N = 26 and fundamental number of FN = 50 with a chromosome formula of 22M+2A+2T. The karyotype of S. marmoratus has a diploid number of 2N = 48 and fundamental number of FN = 50 with a chromosome formula of 2M+46T. The karyotype of P. yokohamae has a diploid chromosome number of 2N = 48 and fundamental number of FN = 48 with a chromosome formula of 24T. The variation in their DNA values (P. sexfasciata = 1.50 pg/nucleus; S. marmoratus = 1.31 pg/nucleus; P. yokohamae = 1.03 pg/nucleus) is positively related to the variation in chromosome fundamental number in material fish examined.