Early efferent innervation of the zebrafish lateral line

We examined the efferent innervation of the lateral line in zebrafish larvae. Three efferent nuclei were previously reported for the posterior line, two in the hindbrain and one in the ventral hypothalamus. Here we show that the same three nuclei innervate the anterior line as well. The rhombencepha...

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Bibliographic Details
Published in:Journal of comparative neurology (1911) 2001-06, Vol.434 (3), p.253-261
Main Authors: Bricaud, Olivier, Chaar, Vicky, Dambly-Chaudière, Christine, Ghysen, Alain
Format: Article
Language:English
Subjects:
Animals
catecholaminergic
Danio rerio
Development Biology
Dextrans
diencephalic
Fluoresceins
Freshwater
Hypothalamus
Hypothalamus - cytology
Hypothalamus - growth & development
Indicators and Reagents
Larva
Larva - anatomy & histology
Life Sciences
Mechanoreceptors
Mechanoreceptors - cytology
Mechanoreceptors - growth & development
Neurons, Efferent
Neurons, Efferent - enzymology
octavolateral efferent neurons
rhombencephalic
Rhombencephalon
Rhombencephalon - cytology
Rhombencephalon - growth & development
Sense Organs
Sense Organs - growth & development
Sense Organs - innervation
Spinal Cord
Spinal Cord - cytology
Spinal Cord - growth & development
tract of the postoptic commissure (TPOC)
Tyrosine 3-Monooxygenase
Tyrosine 3-Monooxygenase - analysis
Zebrafish
Zebrafish - anatomy & histology
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Description
Summary:We examined the efferent innervation of the lateral line in zebrafish larvae. Three efferent nuclei were previously reported for the posterior line, two in the hindbrain and one in the ventral hypothalamus. Here we show that the same three nuclei innervate the anterior line as well. The rhombencephalic neurons innervate either the anterior or the posterior line. The diencephalic neurons seem to innervate both lines as well as the ear. The diencephalic efferents are labeled by anti‐tyrosine hydroxylase antibodies and probably use dopamine as a transmitter. They are among the very first catecholaminergic neurons to differentiate in the brain and extend branches into the lateral line system almost as soon as the latter forms. We discuss possible functions of the rhombencephalic and diencephalic efferents. J. Comp. Neurol. 434:253–261, 2001. © 2001 Wiley‐Liss, Inc.
ISSN:0021-9967
1096-9861
DOI:10.1002/cne.1175