Structural and Functional Development of the Olfactory Organ in Teleosts
- 1 March 1989
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 118 (2) , 183-194
- https://doi.org/10.1577/1548-8659(1989)118<0183:safdot>2.3.co;2
Abstract
Fish detect chemical stimuli through two major chemosensory channels, olfaction and gustation. All current evidence indicates that olfaction is a major mediator of chemical signals and is involved in diverse teleost behavior. This paper describes the morphological components and the basic principles of developmental patterns of the olfactory organ as well as cellular differentiation of receptors in rainbow trout Oncorhynchus mykiss (formerly Salmo gairdneri). The olfactory organ originates from an anlage formed by the ectoderm on the ventrolateral part of the head during stage 19 (11 d postfertilization). Ciliated receptor cells appear at stage 24 (day 18) and dominate until immature microvillar receptor cells develop in stage-28 (day 26) embryos. During this period, the olfactory placode continues a lateral and upward migration. At stage 29, the day of hatching, the olfactory groove is enclosed by flaps of skin, and by stage 33, distinct anterior and posterior nares are formed. Spontaneous elect...Keywords
This publication has 0 references indexed in Scilit: