title: Morphometric and Histological Changes in Cyprinid Loach, Misgurnus anguillicaudatus, in the Early Growth Period.
abstract: In this study, we measured the morphometric and histological changes in the cyprinid loach, Misgurnus anguillicaudatus, during the early period of growth. Eyes, yolk length, yolk height, and yolk volume of the larva decreased for 16 days post hatching (DPH) (P<0.05). During 60 DPH (P>0.05), the most anterior extension of the head × the posterior end of the supraoccipital, the most anterior extension of the head × the origin of the dorsal fin, the most anterior extension of the head × the origin of the pectoral fin, the posterior end of the supraoccipital × the origin of the pelvic fin, and the origin of the dorsal fin × the ventral origin of the caudal fin gradually decreased, whereas the most anterior extension of the head × the dorsal origin of the caudal fin, the origin of the dorsal fin × the origin of the anal fin, the origin of the dorsal fin × the origin of the pectoral fin, and the insertion of the dorsal fin × the origin of the pelvic fin gradually increased (P<0.05). In the cyprinid loach, the retina is composed of six layers: the epithelial layer, ganglion cell layer, inner nuclear layer, inner plexiform layer, outer limiting membrane, and rod and cone layer (RCL). After hatching, part of the RCL gradually increased in density. The kidney and midgut epithelium were already formed in the cyprinid loach just after hatching and grew gradually in subsequent days.
authors.affiliation: Inland Aquaculture Research Center, National Fisheries Research & Development Institute, Jinhae 645-758, Republic of Korea.
authors.forename: Hyoung Kyun
authors.initials: HK
authors.lastname: Han
authors.affiliation: Inland Aquaculture Research Center, National Fisheries Research & Development Institute, Jinhae 645-758, Republic of Korea.
authors.forename: Sang Gu
authors.initials: SG
authors.lastname: Lim
authors.affiliation: Biotechnology Research Division, National Fisheries Research & Development Institute, Busan 619-705, Republic of Korea.
authors.forename: Jung Ha
authors.initials: JH
authors.lastname: Kang
authors.affiliation: Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
authors.forename: Jae Wook
authors.initials: JW
authors.lastname: Choi
authors.affiliation: Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Gil
authors.affiliation: Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
authors.forename: Sung Hwoan
authors.initials: SH
authors.lastname: Cho
authors.affiliation: Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
authors.forename: Sun-Young
authors.initials: SY
authors.lastname: Lim
authors.affiliation: Division of Marine Environment and Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
authors.forename: In-Seok
authors.initials: IS
authors.lastname: Park
keywords: Cyprinid loach; Early growth; Histology; Misgurnus anguillicaudatus; Morphometric trait.