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Development of the Olfactory Apparatus of the Cutthroat Trout
Author(s) -
Jahn Lawrence A.
Publication year - 1972
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1972)101<284:dotoao>2.0.co;2
Subject(s) - olfactory epithelium , biology , anatomy , olfactory system , neuroepithelial cell , olfaction , hatching , odor , trout , fish <actinopterygii> , microbiology and biotechnology , ecology , neuroscience , fishery , stem cell , neural stem cell
The development of the olfactory structures of embryos, fry, fingerling, jnvenile and adult cutthroat trout was determined by histological and dissection techniques. Fish examined 20 days after fertilization (15 days before hatching) had nerve cells present in the olfactory epithelium and nerve fibers entering the brain. Lamellae developed on alternate sides of the central raphe in each rosette. Adult olfactory epithelium contained neuroepithelial, mucous, supporting, and basal cells with neuroepithelial cells present only in the valleys of the lamellae. Water circulation through the olfactory organ appeared to be inactive, although two accessory chambers were present. The structural components necessary for olfaction were present well before the fish leave their homestreams. Imprinting to a homestream odor is a possibility at a very early age.