Light and Scanning Electron Microscopic Study on the Lingual Papillae in the Newborn Sea Otter Enhydra lutris

Summary: We observed the external surface and connective tissue cores (CTCs) of the lingual papillae (filiform, fungiform and vallate papillae) of adult Spotted seals (Phoca largha) using SEM and light microscopy. The tongue was Vshaped and its apex was rather rounded. On the dorsal surface from apex to the one-third posterior of the tongue, the lingual mucosa was densely covered by filiform papillae, with a scatted distribution of dome-like fungiform papillae, which have orthokeratinized epithelium. At the posterior part of the tongue, filiform papillae were totally diminished and their epithelium was parakeratinized. Approximately 6-7 vallate papillae were arranged in a V-shape on the posterior of the tongue. After removal of the epithelium, the CTCs of the filiform papillae that were distributed at apex consisted of a primary core and approximately 5-6 rod-shaped small accessory cores. The CTCs of filiform papillae that were distributed at anterior part of the tongue lacked primary protrusions and possessed approximately 10-15 rod shaped small accessory cores that were arranged in a horseshoe manner. The CTCs of fungiform papillae had cylindrical primary cores and were fringed with accessory protrusion. In the Vallate papillae, taste buds were only seen at the dorsal epithelium.

Section: Keratinizationmentioning

confidence: 99%

Scanning Electron Microscopic Study on the Tongue and Lingual Papillae of the adult Spotted Seal, Phoca largha

Yoshimura

Shindo

Miyawaki

et al. 2007

“…In the order Carnivora, there have been some scanning electron microscopy (SEM) studies on the tongues of the cat (Boshell et al, 1982), dog (Iwasaki and Sakata, 1985), mongoose (Iwasaki et al, 1987), Japanese weasel (Furubayashi et al, 1989), sea otter (Shimoda et al, 1996), bush dog (Emura et al, 2000), panther and Asian black bear (Emura et al, 2001), lion (Emura et al, 2003), tiger (Emura et al, 2004) and jaguar (Emura et al, 2013). Such studies have revealed variations in the morphology and distribution of papillae on the dorsal lingual surface among animal species.…”

Section: Introductionmentioning

confidence: 99%

Morphology of the lingual papillae in the fishing cat

Emura

Okumura

Chen

2014

Summary:We examined the dorsal lingual surface of an adult fishing cat (Prionailurus viverrinus) by scanning electron microscopy. The filiform papillae on the lingual apex had several pointed processes. The connective tissue core of the filiform papillae resembleda a well in shape. The filiform papillae on the anterior part of the lingual body were large and cylindrical in shape. The connective tissue core of the filiform papillae consisted of a large conical papilla. The filiform papillae on the central part of the lingual body were large and conical. The connective tissue core of the filiform papillae consisted of a large main process and some secondary processes. The connective tissue core of the fungiform papillae did not have processes. The vallate papillae were surrounded by a groove and a pad. The top of the connective tissue core of the vallate papillae had a rough surface with no spines.

“…In the order Carnivora, there have been some SEM studies of the tongues of cat (Boshell et al, 1982), dog (Iwasaki and Sakata, 1985), mongoose (Iwasaki et al, 1987), Japanese weasel (Furubayashi et al, 1989), sea otter (Shimoda et al, 1996), bush dog (Emura et al, 2000), panther and asian black bear (Emura et al, 2001), lion (Emura et al, 2003), tiger (Emura et al, 2004) and silver fox (Jackowiak and Godynicki, 2004). Such studies reveal variations in morphology and distribution of papillae on the dorsal lingual surface among animal species.…”

mentioning

confidence: 99%

Morphology of the Lingual Papillae in the Raccoon Dog and Fox

Emura

Okumura

Chen

et al. 2006

Summary: The dorsal lingual surfaces of the raccoon dogs (Nyctereutes procyonoides) and fox (Vulpes vulpes japonica) were examined by scanning electron microscopical (SEM) observations. The distribution and type of the lingual papillae found in the raccoon dog were similar to those in the fox. Filiform, fungiform, foliate and vallate papillae were observed. The filiform papillae were distributed over the entire dosal surface of the tongue. Each filiform papilla on the apical surface of the tongue had several pointed processes. The filiform papillae of the lingual body consisted of a main papilla and some secondary papillae. The fungiform papillae were present rounded bodies, and more densely distributed on the lingual apex. The foliate papillae were seen on the dorsolateral aspect of the tongue. The vallate papillae were located on both sides of the posterior end of the lingual body. Each papilla was surrounded by groove and crescent pad. On the periphery of the papillae, large conical papillae were observed.