Morphological Studies of Taste Buds in Chickens

Kurosawa, Tsutae; Kusuhara, Seiji; Ishida, Kengo; Niimura, Sueo

doi:10.2508/chikusan.54.9_502

Cited by 17 publications

(27 citation statements)

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“…By E18, clear vesicles, mitochondria, and nerve profiles are identifiable amongst cells in the developing bud (Ganchrow and Ganchrow, 1989; and unpublished observations). Mature-like bud morphology in terms of cell types, junctional contacts, microvillar access to the pore region, size of pore, and innervation, is achieved by 21 days in Taste-bud features reported at perihatching closely resemble those evident in the adult chicken (Kurosawa et al, 1983;Ganchrow and Ganchrow, unpublished observations Delay and Roper, 1988). 2) Although dark and light cells have extensive contact with nerve fibers and project microvilli into the taste pore in adult chicken material, afferent synaptic organization has been observed only occasionally for light cells.…”

Section: Discussionmentioning

confidence: 70%

“…x 12,900; bar = 2.8 km. Miller and Chaudhry, 1976a;Zahm and Munger, 1983a,b;Ozeki, 1987), absence of these granules in the present embryonic and perihatching chick as well as the adult chicken (Kurosawa et al, 1983; Ganchrow and Ganchrow, unpublished observations) suggests they do not characterize all vertebrate taste buds. Electron-dense granules in apical taste bud regions of "dark" (Type I) cells have been described in the taste buds of fish (Connes et al, 1988), the mudpuppy (Farbman and Yonkers, 1971;Cummings et al, 1987;Delay and Roper, 19881, reptiles (Pevzner and Tikhonova, 1979a,b;Korte, 1980;Uchida, 19801, rodents (Takeda and Hoshino, 1975;Miller and Chaudhry, 1976a,b;Whitehead et al, 1985;Toyoshima and Tandler, 1986;Ozeki, 1987;Kinnamon et al, 1985Kinnamon et al, , 1988Royer and Kinnamon, 19881, lagomorphs (Jeppsson, 1969;Murray, 19731, and primates (Zahm and Munger, 1983a;Farbman et al, 1985).…”

Section: Discussionmentioning

confidence: 80%

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Ultrastructure of palatal taste buds in the perihatching chick

Ganchrow¹,

Ganchrow²,

Goldstein³

1991

Am. J. Anat.

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Palatal taste buds of perihatching chicks were examined by electron microscopy. Four intragemmal cell types were characterized. 1) Light: with voluminous, electron-lucent cytoplasm containing scattered free ribosomes, rough and smooth endoplasmic reticulum, plump mitochondria, sparse perinuclear filaments, occasional Golgi bodies, and numerous clear and dense-cored vesicles. Clear vesicles sometimes aggregate in a presynaptic-like configuration apposed to an axonal profile. These cells contained large, spherical, uniformly granular nuclei with one nucleolus. 2) Dark: with dense cytoplasm containing filamentous bundles surrounding the nucleus, occasional clear vesicles, centrioles, rough endoplasmic reticulum, and compact mitochrondria. The apical cytoplasm noticeably lacks dense secretory granules. Irregular to lobulated nuclei are densely granular, and contain scattered clumps of chromatin, adhering especially to the inner leaflet of the nuclear membrane, and at least one nucleolus. Cytoplasmic extensions of dark cells envelop other intragemmal cell types and nerve fibers. Light and dark cells project microvilli into the taste pore. 3) Intermediate: contain gradations of features of light and dark cells. 4) Basal: darker than the other intragemmal cell types and confined to the ventral bud region. Putative afferent synapses in relation to light cells, and axo-axonal contacts are described. While the appearance of axo-axonal contacts may be a transient developmental event, other bud features are consonant with observations in adult chickens and suggest that the peripheral gustatory apparatus is mature at hatching in this precocial avian species.

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Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 80%

Ultrastructure of palatal taste buds in the perihatching chick

Ganchrow¹,

Ganchrow²,

Goldstein³

1991

Am. J. Anat.

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“…Transmission electron microscopy (TEM) of taste buds in G. domesticus revealed light cells (gustatory cells displaying afferent synaptic contacts with axon terminals), dark cells (supporting cells displaying extensive axonal contacts with no synapses) and peripheral (follicular) cells (flattened cells with filaments and free ribosomes) (Kurosawa et al 1983, cited by Berkhoudt 1985. Future ultrastructural studies on taste buds in D. novaehollandiae will be required to more accurately determine the structure of the light and dark cells observed by light microscopy in order to postulate their function.…”

Section: Structurementioning

confidence: 98%

“…The small size of the outer pore in D. novaehollandiae may partially explain why these structures were not identified in previous studies using scanning electron microscopy Crole and Soley 2010b). Taste canals have been described in the taste buds of G. domesticus (Gentle 1971b;Kurosawa et al 1983;Ganchrow 1985, 1987) and Coturnix japonica (Linnaeus 1758) (Warner et al 1967). Similar structures appeared to be present in some of the taste buds in D. novaehollandiae (see Fig.…”

Section: Structurementioning

confidence: 98%

“…However, despite the reported low number of taste buds, birds do possess an acute sense of taste (Berkhoudt 1985;Roura et al 2013). Taste buds have been positively identified in numerous avian species (Bath 1906;Botezat 1910;Warner et al 1967;Berkhoudt 1985) including domestic poultry (Lindenmaier and Kare 1959;Saito 1966;Gentle 1971b;Berkhoudt 1977;Kurosawa et al 1983;Ganchrow and Ganchrow 1985, 1987, 1989Kudo et al 2008;Roura et al 2013), of which Gallus domesticus (Linnaeus 1758) has been most extensively researched.…”

Section: Introductionmentioning

confidence: 99%

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Contrasting morphological evidence for the presence of taste buds in Dromaius novaehollandiae and Struthio camelus (Palaeognathae, Aves)

Crole

Soley

2015

Zoomorphology

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This study, facilitated by the use of immunohistochemistry, indicated the presence of taste buds in Dromaius novaehollandiae but not in Struthio camelus. Seen at the light microscope level, the taste buds consisted of follicular cells and receptor cells. The follicular cells were located at the periphery of the taste bud, essentially encapsulating the receptor cells. Two morphologically distinct receptor cells were identified. Immunohistochemical labelling for neurofilament identified gustatory nerves within the taste bud. The distribution of taste buds in D. novaehollandiae matched strategic locations in the oropharynx along which food could be sampled, according to the feeding method described for these birds. Future feeding studies would be necessary in D. novaehollandiae to determine the importance of taste discrimination in their diet. This study represents the first confirmed report of a sense of taste in any ratite species.

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Chorda tympani innervation of anterior mandibular taste buds in the chicken (Gallus gallus domesticus)

Ganchrow¹,

Ganchrow²,

Oppenheimer³

1986

Anat. Rec.

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While the mammalian chorda tympani innervates taste buds on the anterior two-thirds of the tongue, the chorda tympani of chickens does not enter the tongue, but rather is reported to supply the oral epithelium of the lower beak subjacent to the tongue. This study in the chicken investigated whether the integrity of taste buds in the lower beak is normally dependent upon innervation by the chorda tympani. Following unilateral ligation and removal of a large section of the chorda tympani, animals were sacrificed at 11, 14, and 21 days postoperatively. Oral tissue between the lingual frenulum and beak tip was serially examined, and the presence of each bud was recorded, noting the point at which the bud opened into the oral cavity. No buds were observed on the operated side in any of the cases, while the average bud count on the unoperated side was 33 +/- 10 (SD). On the unoperated side, taste buds were generally associated with anterior mandibular salivary gland ducts that reached surface epithelium and opened into the oral cavity. On the operated side, the cellular organization adjacent to gland ducts and in duct-free epithelium appeared as in control (i.e., bud-free) epithelium. The number of salivary gland duct openings into the oral cavity was equivalent on the operated and control sides. It is concluded that the chorda tympani of chickens innervates taste buds in the anterior lower beak epithelium and that it functions to maintain the structural integrity of these buds.

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Morphological Studies of Taste Buds in Chickens

Cited by 17 publications

References 0 publications

Ultrastructure of palatal taste buds in the perihatching chick

Ultrastructure of palatal taste buds in the perihatching chick

Contrasting morphological evidence for the presence of taste buds in Dromaius novaehollandiae and Struthio camelus (Palaeognathae, Aves)

Chorda tympani innervation of anterior mandibular taste buds in the chicken (Gallus gallus domesticus)

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