RRC ID 217
Author Iwamatsu T, Nakamura H, Ozato K, Wakamatsu Y.
Title Normal growth of the "see-through" medaka.
Journal Zool. Sci.
Abstract The see-through stock in the medaka Oryzias latipes, causes pigments to be absent from the whole body and has a transparent body in the adult stage as well as during embryonic stages. To establish a standard table of growth stages for this model fish, morphological features were examined during the growing period from hatching to adulthood. The main observations were performed on morphological changes in external and internal organs that could be seen through the body wall of the living fish during growth. Finally, five growth stages from just after hatching to the adult stage were defined on the basis of synchronized or definite changes in morphology as follows: (1) stage 40 in which the nodes (joints) in bony rays of the caudal and pectoral fins first appear, (2) the stage 41 in which the ribs and the anal, dorsal and ventral fins are formed by degeneration of the membrane fin folds, as recognized by the first appearance of nodes in the fin rays of the anal, pectoral and dorsal fins, and the parallel distribution of the dorsal artery and ventral vein of the tail, (3) stage 42 in which the 2-spiral pattern of the gut, the ray nodes in the ventral fins, and the scales first appear, (4) stage 43 in which early secondary sexual characters such as urinogenital protruberances (female) and papillar processes (male) appear, (5) stage 44 in which the 3-spiral pattern of the gut and the papillar process on the 2nd ray of pectral fins (male) appear.
Volume 20(5)
Pages 607-15
Published 2003-5
DOI 10.2108/zsj.20.607
PMID 12777831
MeSH Animals Models, Animal Oryzias / embryology Oryzias / growth & development* Pigmentation
IF 0.906
Times Cited 12
Medaka see-through medaka d-rR/Nagoya (MT847)