Are birds pseudoteeth and denticulations related to touch papilla? An investigation in parrot, goose, and chicken

Louryan, Stéphane; Choa-Duterre, M; Lejong, Marie; Vanmuylder, Nathalie

doi:10.1016/j.morpho.2022.11.002

Cited by 2 publications

(4 citation statements)

References 20 publications

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“…The morphologic development features are similar to those described by Skieresz-Szewczyk et al (2012) and Skieresz-Szewczyk & Jackowiak (2017). Despite several differences, gene expressions are very similar to our previous observations in geese denticulations and bill tip organ, with a more intense expression of some markers such as BMP4, PITX2, PAX9, and SHH in the mesenchyme (Louryan et al, 2023). However, no specific protein expression was observed prior to the first apparition of papillae.…”

Section: Discussionsupporting

confidence: 87%

“…We have also previously shown that bird bill tip organ, pseudoteeth, and denticulations contained a lot of mechanical tubules, associated with Herbst and Grandry corpuscules, suggesting a sensory role (Louryan et al, 2023). The Herbst corpuscles correspond to the mammalian Pacini corpuscle, while Herbst is the equivalent of the Meissner one, with similar functions.…”

Section: Discussionmentioning

confidence: 68%

“…Furthermore, several fishes, as the salmon trout, possess tongue teeth (Berkovitz, 1978;Berkovitz & Shellis, 2017). It could thus be interesting to correlate the anatomy and development of the goose filiform papillae to those of bird denticulations and pseudoteeth, which exhibit during their development some gene expressions associated with odontogenesis (Louryan et al, 2021(Louryan et al, , 2023. The morphological features of papillae development in geese (Skieresz-Szewczyk et al, 2012;Skieresz-Szewczyk & Jackowiak, 2017) and in duck (Skieretz-Szeczyk et al, 2014) were described using histology and scanning electron microscopy.…”

Section: Introductionmentioning

confidence: 99%

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Development of the Goose Tongue Filiform Papillae: Could it be Tooth-Like Sense Organs?

Louryan,

Choa-Duterre,

Destoop

et al. 2023

Int. J. Morphol.

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The geese's tongue filiform papillae are particularly long, and exhibit the same morphology of a tooth, evoking the lingual teeth of several fishes. In adult animals, they contain numerous mechanical Herbst's corpuscles but no taste buds. In the embryo, they appear since stage 38 and acquire their definitive shape between stages 38 and 42. They express several proteins associated with mammalian tooth development (BMP4, β-catenin, SHH, PITX2, PAX9), also known to be linked to parrot's pseudoteeth and goose's denticulations development. Neurofilaments are early present in the papillae primordia, and appear particularly numerous in adult papillae. Our results suggest that these papillae constitute a mechanical organ with a « tooth shape » derived from ancestral odontodes, whose development is controlled by numerous genes involved in classical odontogenesis.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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Development of the Goose Tongue Filiform Papillae: Could it be Tooth-Like Sense Organs?

Louryan,

Choa-Duterre,

Destoop

et al. 2023

Int. J. Morphol.

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“…The turtle anatomy may have an analogous mechanism for both food gathering and defense, similar to birds [ 32 ]. The upper rhamphotheca of turtles is a prime example of an adaptation to feeding ecology and dietary behavior that has a compensatory role for teeth as long as turtles are toothless creatures [ 33 ], avian are also beaked edentulous species [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Macro- and micro-anatomical investigation of the oropharyngeal roof of landform greek tortoise (Testudo graeca graeca) and semi-aquatic red-eared slider turtle (Trachemys scripta elegans)

Alsafy,

El-Sharnobey,

El-Gendy

et al. 2024

BMC Vet Res

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The present investigation examined the oropharyngeal roof of two turtles having different feeding behaviors: the landform Greek tortoise (Testudo graeca graeca) primarily herbivores and the semi-aquatic red-eared slider turtle (Trachemys scripta elegans) lives in freshwater that opportunistic omnivorous grossly and by scanning and light microscopes. Grossly, the Greek tortoise had a V-shaped roof consisting of the upper rhamphotheca, peri-palatine region, upper alveolar ridge, peripheral palatine ridge, median palatine ridge, vomer, choanae, caudal palatine part, and pharynx. At the same time, the red-eared slider had a semilunar roof consisting of upper rhamphotheca, two peripheral palatine ridges, core of palatine ridges, upper alveolar band, vomer, choanae, caudal palatine part, and pharynx. SEM revealed that the red-eared slider roof appeared more straightforward. The upper rhamphotheca is sharp, with a median premaxillary notch in the red-eared slider that gives a powerful bite for cutting to compensate absence of the teeth. Additionally, the red-eared slider’s upper alveolar band is interrupted by a single upper alveolar ridge that appears spiky, pointed, and longer as it needs powerful chewing of prey and there are two types of teeth-like projections at its peri-palatine area for food-crushing and chewing. The Greek tortoise palatine region had numerous ridges and folds to provide roughness for food processing. Greek tortoises had small-sized choanae with two choanal folds to minimize choanal openings when eating dusty grasses. Histologically, Greek tortoise palate was rostrally thicker and more keratinized than caudally, and the caudal palatine region was characterized by a single pair of circumvallate-like papilla with multiple mucous openings and secretions, while red-eared slider palate was slightly keratinized at the peri-choanal region, and the rest of the palate was non-keratinized with few mucous openings. The current investigation found various structural oropharyngeal roof adaptations to feeding behavior in the omnivore red-eared slide compared to the herbivorous Greek turtle.

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Are birds pseudoteeth and denticulations related to touch papilla? An investigation in parrot, goose, and chicken

Cited by 2 publications

References 20 publications

Development of the Goose Tongue Filiform Papillae: Could it be Tooth-Like Sense Organs?

Development of the Goose Tongue Filiform Papillae: Could it be Tooth-Like Sense Organs?

Macro- and micro-anatomical investigation of the oropharyngeal roof of landform greek tortoise (Testudo graeca graeca) and semi-aquatic red-eared slider turtle (Trachemys scripta elegans)

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