실내수조에서 사육한 참조기 배발생 및 자치어의 형태 KCI

Title
실내수조에서 사육한 참조기 배발생 및 자치어의 형태
Alternative Title
Embryonic Development, Larvae and Juveniles of the Small Yellow Croaker (Larimichthys polyactis) Reared in Aquarium
Author(s)
명정구; 김용억; 박용주; 김병기; 김종만; 허형택
KIOST Author(s)
Myoung, Jung Goo(명정구)
Publication Year
2004-12
Abstract
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.
ISSN
0374-8111
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5181
Bibliographic Citation
한국수산과학회지, v.37, no.6, pp.478 - 484, 2004
Publisher
한국수산과학회
Keywords
Larimichthys polyactis; Embryonic development; Morphological characteristics; Larvae and juveniles
Type
Article
Publisher
한국수산과학회
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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