Taste and tactile recordings from the ramus recurrens facialis innervating flank taste buds in the catfish

Davenport, Cynthia J.; Caprio, John

doi:10.1007/bf00609846

Cited by 75 publications

(43 citation statements)

References 40 publications

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“…Not surprisingly, they have become standard models for the study of gustation. The anatomy (Reutter, 1971(Reutter, , 1978GroverJohnson and Farbman, 1976;Finger and Böttger, 1990;Finger et al, 1991), physiology (Davenport and Caprio, 1982;Kanwal and Caprio, 1983;Caprio et al, 1993), and innervation (Herrick, 1901;Northcutt et al, 2000) of their taste buds are well documented, and detailed information exists concerning their central gustatory pathways (Herrick, 1905;Finger, 1976Finger, , 1978Finger, , 1981Finger, , 1983Finger and Morita, 1985;Morita and Finger, 1985) and gustatorymediated behaviors (Herrick, 1903;Tateda, 1961;Bardach et al, 1967;Atema, 1971;Stewart et al, 1979;Holland and Teeter, 1981).…”

Section: Indexing Terms: Calretinin; Facial Nerve; Gustation; Teleostmentioning

confidence: 96%

Taste bud development in the channel catfish

Northcutt

2004

J of Comparative Neurology

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Taste bud formation in channel catfish is first seen to occur in stage 39 embryos, when taste bud primordia (stage 1), consisting of three to five cells, including a single calretinin-positive cell, can be recognized within the oropharyngeal cavity and maxillary barbels. Within a short time (stage 40), stage 2 taste bud primordia are apparent and include two or three calretinin-positive cells. The number of calretinin-positive cells continues to increase (stage 3), and the primordia begin to erupt as mature taste buds (stage 4) by embryonic stage 48. This same pattern of taste bud development characterizes other regions of the head, with calretinin-positive cells first detected around the mouth and on the other barbels by stage 41 and on the rest of the head by stage 48. The development of trunk taste buds lags far behind that of the head, with the first calretinin-positive cells occurring on the lobes of the caudal fin by stage 48 and on the remaining fins by stage 50. Taste bud primordia on the trunk proper do not begin to appear until stage 53, when the larvae begin to feed, and these receptors begin to erupt only in 1-week-old larvae. Fibers of the facial nerve, which innervate all external taste buds, ramify within the ectoderm prior to the first appearance of taste bud primordia or their precursors.

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Section: Indexing Terms: Calretinin; Facial Nerve; Gustation; Teleostmentioning

confidence: 96%

Taste bud development in the channel catfish

Northcutt

2004

J of Comparative Neurology

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“…Taste buds within a dermatome are innervated by the recurrent facial fibers, whereas general somatosensory receptors in the same dermatome presumably are innervated by spinal nerves. Despite this seeming separation of modalities by nerve, the recurrent facial nerve exhibits both tactile and chemosensory responses (Davenport and Caprio, 1982). Thus, the specific contribution of the facial and spinal nerves to overall detection of cutaneous stimuli remains unclear.…”

Section: Medullary Gustatospinal Projectionsmentioning

confidence: 99%

Parallel Medullary Gustatospinal Pathways In a Catfish: Possible Neural Substrates for Taste-Mediated Food Search

Finger

1997

J. Neurosci.

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Taste and tactile fibers in the facial nerve of catfish innervate extraoral taste buds and terminate somatotopically in the facial lobe (FL)-a medullary structure crucial for gustatory-mediated food search. The present study was performed to determine the neural linkages between the gustatory input and the spinal motor output. Spinal injections of horseradish peroxidase (HRP) label spinopetal cells in the octaval nuclei, the nucleus of the medial longitudinal fasciculus, and reticulospinal neurons (Rsps) in the brainstem medial reticular formation (RF), including the Mauthner cell. A somatotopically organized, direct faciospinal system originating from superficial cells scattered in the lateral lobule of the facial lobe (ll) is also labeled. (1) a topographically organized direct faciospinal pathway, and (2) an indirect facioreticulospinal pathway in which reticular neurons process and integrate gustatory information before influencing spinal circuitry for motor control during food search.

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“…Taste buds (TB) are compound epidermal chemosensory and tactile organs (Davenport & Caprio 1982, Jakubowski & Whitear 1990, Reutter 1986, Weber 1827. In most fishes, TBs are not confined to the oropharyngeal cavity, but also occur at the body surface (Adam 1964, Atema 1971, Bardach & Atema 1971, Herrick 1901, 1904, Kapoor et al 1975, Leydig 1851, Moore 1950, Reutter 1986, Schemmel 1967.…”

Section: Introductionmentioning

confidence: 99%