oral disc

[′ȯr·əl ¦disk]

(invertebrate zoology)

The flattened upper or free end of the body of a polyp that has the mouth in the center and tentacles around the margin.

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Tadpoles from Gosner stage 25 to 42 were handled using modeling clay to position the specimen, allowing detailed observations of the oral disc.

Tooth row variation in tadpoles of Dendropsophus labialis (Anura: Hylidae: Dendropsophini) and the evolution of oral morphology in the genus/Variacion en hileras de dientes labiales en larvas de Dendropsophus labialis (Anura: Hylidae: Dendropsophini) y la evolucion de la morfologia oral en el genero

Part 2 A look at features' provides detailed coverage of morphology and features for each of the lifecycle phases typical of frogs, and includes the oral disc, an important diagnostic feature of many tadpoles.

Tadpoles and Frogs of Australia

Because preserved tadpoles undergo some degree of integument deformation through time, which may alter eye position and or vent position relative to other features, and cause fading of color pattern and other markings, we used oral disc morphology to determine the identity of the tadpoles.

Correction of locality records for the endangered arroyo toad (Anaxyrus californicus) from the desert region of Southern California

Only mouthparts of the oral disc (i.e., labial tooth rows, papillae, and jaw sheaths; McDiarmid and Altig, 1999) of larval anurans are keratinized (Luckenbill, 1965), and these are the sites of Bd infection (Knapp and Morgan, 2006).

Body length of Hylodes cf. ornatus and Lithobates catesbeianus tadpoles, depigmentation of mouthparts, and presence of Batrachochytrium dendrobatidis are related/Tamanho do corpo, despigmentacao das partes bucais e presenca de Batrachochytrium dendrobatidis estao relacionados em Hylodes cf. ornatus e Lithobates catesbeianus

The ethological changes were accompanied (like oral disc closure, wilting, and swelling) in the experiment.

Osmoregulation in tropical zoanthid Protopalythoa variabilis (Cnidaria: Anthozoa)/Osmorregulacao no zoantideo tropical Protopalythoa variabilis (Cnidaria: Anthozoa)

For example, Johnston (1982) showed that after grazing on algae, tadpoles left marks on the substrate, and suggested that labial teeth anchored the oral disc to the substrate while the tadpoles removed food from the substrate with their jaw sheaths.

How does a change in labial tooth row number affect feeding kinematics and foraging performance of a ranid tadpole (Lithobates sphenocephalus)?

Chemical elimination is effective, but requires the laborious introduction of toxic injections directly into the oral disc of each anemone.

Biological control of aquarium pest anemone Aiptasia pallida verrill by peppermint shrimp Lysmata risso

microcephalus group are considered to have extreme reduction and modification of the elements of the oral disc (Duellman 2001).

Histological examination of the external oral apparatus of the tadpole of Dendropsophus microcephalus (Hylidae, Hylini)/Examen histologico del aparato bucal externo del renacuajo de Dendropsophus microcephalus (Hylidae, Hylini)

Six structures of the coral were assayed: oral disc, tentacles, costae, septa, calice, and coenosarc.

Patterns of fluorescent protein expression in scleractinian corals

5): total length 43.6; body length 14.4; tail length 29.2; height of caudal musculature, at base of tail, 5.3; width of caudal musculature, at base of tail, 3.7; tail maximum height 8.7; maximum height of dorsal fin 2.5; maximum height of ventral fin 2.0; maximum body width 8.3; maximum body height 7.0; eye diameter 1.7; interorbital distance 3.4; snout-base of spiracle distance 8.2; nostril-eye distance 1.7; oral disc transverse diameter 5.0.

Sobre la morfologia de Pectrohyla chryses (Anura: Hylidae; Hylini), con comentarios sobre algunos caracteres controversiales, sus relaciones filogeneticas, y su diagnosis

Prior to use, 3-year dark-treated anemones (n = 180) with oral disc diameters of about 2 to 3 mm were placed in 100-ml containers filled with filtered (0.45 [[micro]meter]) seawater (FSW).

Uptake in persistence of homologous and heterologous zooxanthellae in the temperate sea anemone Cereus pudunculatus (pennant)

1) (measurement in mm): body length 16.2; maximum body width 8.9; tail length 27.3; total length 43.5; oral disc diameter (transverse) 5.4; eye diameter 1.9; interorbital distance 5.2; internostril distance 4.8; width of caudal musculature 4.9; maximum tail height 9.5; body slightly depressed; snout rounded in dorsal view and profile; eyes small (diameter of eye 11.7 % of body length), dorsal, not protuberant; nostril opening ovoid, not prominent, anterolaterally directed, located slightly closer to eye than to tip of snout; spiracle sinistral, angled 45 degrees with respect to horizontal plane of body; opening of spiracle located at midline of body, slightly closer to end of body than to tip of snout; inner wall of spiracle free from body (Altig and McDiarmid, 1999; Fig.

El renacuajo de la rana arboricola mexicana Charadrahyla taeniopus (Anura: Hylidae)

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