Mauthner axon diameter and impulse conduction velocity decrease with growth of goldfish.

P G Funch; S L Kinsman; D S Faber; E Koenig; S J Zottoli

doi:10.1016/0304-3940(81)90261-5

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Mauthner axon diameter and impulse conduction velocity decrease with growth of goldfish.

P G Funch·S L Kinsman·D S Faber·E Koenig·S J Zottoli

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Abstract

Conduction velocities of antidromically evoked impulses along the goldfish Mauthner axon were found to be inversely correlated with body length. To test the hypothesis that such a relation is accompanied by a reduction in axonal diameter with increasing fish size, Mauthner axon diameters were measured. A parabolic relationship with respect to body length was obtained, axonal diameter being maximal in 9.5 cm fish. To our knowledge, this is the first report of a decrease in conduction velocity and axonal size during growth of an organism were functioning of the cell is maintained.

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P G Funch, S L Kinsman, D S Faber, E Koenig, S J Zottoli. 1981-12-11. Mauthner axon diameter and impulse conduction velocity decrease with growth of goldfish.. https://doi.org/10.1016/0304-3940(81)90261-5

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