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Four newly reported ophichthid leptocephali species revealed by mitochondrial 12S rDNA, with implications of their occurrence in Korea

Animal Cells and Systems 2012년 16권 5호 p.415 ~ 424
지환성, 이해원, 홍병규, 김진구,
소속 상세정보
지환성 ( Ji Hwan-Sung ) - Pukyong National University Department of Marine Biology
이해원 ( Lee Hae-won ) - National Fisheries Research and Development Institute Dokdo Fisheries Research Center
홍병규 ( Hong Byung-Kyu ) - National Fisheries Research and Development Institute Dokdo Fisheries Research Center
김진구 ( Kim Jin-Koo ) - Pukyong National University Department of Marine Biology

Abstract


Four species of ophichthid leptocephali were identified using 12S rDNA sequences, and their morphological descriptions were first provided based on six individuals (S1?S3, M1, and E1?E2) collected from the East Sea and the Korea Strait between September 2008 and October 2010. Mitochondrial 12S rDNA 859?861 base pairs of ophichthid leptocephali were compared with those of 16 ophichthids adult and 2 outgroups (Anguilla japonica and Conger myriaster). Leptocephali of S1 and E1 were very closely clustered with adult of Scolecenchelys borealis (D=0.002) and Echelus uropterus (D=0.000), respectively. However, leptocephali of S2?S3 and M1 were slightly far clustered with leptocephalus of S1 (D=0.006) and adult of Muraenichthys gymnopterus (0.034), respectively. We believe that S1 and E1 are S. borealis and E. uropterus, respectively, in which the former is unrecorded species in Korea. However, S2?S3 and M1 may be undescribed species belonging to genus Scolecenchelys and Muraenichthys, respectively, because total numbers of myomeres for S2?S3 (148?158) and M1 (151) were not consistent with total numbers of vertebrae or distribution for any adult of Scolecenchelys spp. and Muraenichthys spp. in the world. We propose the new Korean name ‘Dong-hae-mul-baem’ for S. borealis.

키워드

Scolecenchelys borealis; Scolecenchelys sp.; Muraenichthys sp.; Echelus uropterus; leptocephalus; 12S rDNA; undescribed species; Ophichthidae

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