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한국산 연어속 어류의 형태학적 연구-V. 연어 (Oncorhynchus keta), 산천어 (O. masou) 및 무지개송어 (O. mykiss)의 골격 비교
명정구,김용억,MYOUNG Jung-Goo,KIM Yong Uk 한국수산과학회 1996 한국수산과학회지 Vol.29 No.2
Comprative osteology of the chum salmon Oncorhynchus keta, masu salmon O. masou and rainbow trout O. mykiss in Korea was studied. As a result, it was found that there were some differences in the structural features of the cranium and visceral skeleton among the species. Interspecific differencies in glossohyal, supraethmoid, parasphenoid and vomer were distinctive for the species. Chum salmon could be distinguished easily by some characters on form of glossohyal which is thin, long and sharp in shape. It has triangle shape supraethmoid while other two species have oval shape one. The shape of parasphenoid, preopercle, hyomandibular and the number of epurals were evaluated as new taxonomic criteria for the salmons.
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명정구,김용억,허형택,김종만,박용주,김병기 한국수산과학회 2004 한국수산과학회지 Vol.37 No.6
On 11 June 1991, eggs from the brood stock of small yellow croaker (Larimichthys polyactis) were artificially fertilized using the standard dry method and were hatched. Each of the fertilized eggs (1.1-1.2mm in diameter) had an oil globule and was transparent and buoyant. The fertilized eggs hatched in a range of water temperatures (17.5-20.3℃) 44hrs after fertilization. The total lengths of the newly hatched larvae were 3.1-3.3mm, and these hatchlings had 31 myotomes (10+21). Melanophores and yellow-brown chromatophores were concentrated on the head, at the ventral part of the yolk, and in the middle of the tail. Four days after hatching, the larvae completely absorbed the yolk and became flexions of 5.1-5.5 mm in total length. Fifteen days after hatching, one spine (the anterior tip of the maxillary) appeared in the upper jaw and three spines developed at the upper parts of the eyes and on the posterior part of the head. At this stage, the larvae were approximately 8.3mm long. Thirty-nine days after hatching, juveniles (1.9-3.4mm in total length) had a pointed tail fin. By 66days after hatching, the juvenile fish (about 4.0-6.5mm in total length) were similar to adult fish in body shape. The larvae of L. polyactis could be distinguished from those of L. croacea by two distinct characteristics: the large number of vertebrae (28-29), and a relatively small bony ridge on the occipital region of the head.
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