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Initial development of Oreochromis niloticus (Teleostei: Cichlidae) otolith
Author(s) -
Zhang Z.,
Runham N. W.
Publication year - 1992
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1992.tb04407.x
Subject(s) - biology , primordium , teleostei , microbiology and biotechnology , anatomy , otolith , fishery , fish <actinopterygii> , biochemistry , gene
Otoliths of Oreochromis niloricus initiate as separate protein granules, surrounded by numerous dark particles. These granules merge to form the sub‐primordium, after a layer of calcium and a layer of protein has been added to each one. Large amounts of protein are accreted on to the subprimordium to form the primordium. Calcification takes place shortly afterwards. In the otocyst lumen filaments and vesicles are abundant and associated. They seem to contribute to the proteins of the primordium and the calcified otolith. Mitochondria, Golgi complexes and intracellular granules are abundant in the epithelium, from which vesicles extrude.