On the Structure and Development of the Hyobranchial Skeleton and Larynx in Xenopus and Pipa; with Remarks on the Affinities of the Aglossa.

Ridewood, W. G.

doi:10.1111/j.1096-3642.1897.tb00243.x

Cited by 52 publications

(78 citation statements)

References 8 publications

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“…The anterolateral processes are absent in pipids (Ridewood, 1897b;Cannatella and Trueb, 1988), Rhinophrynus (Trueb and Cannatella, 1982), Ascaphus (Canatella, 1985), Leiopelma (Trewavas, 1933), megophryids (Trewavas, 1933;Cannatella, 1985), the three ceratophryine genera, and Phyllomedusa spp. (Trewavas, 1933;Fabrezi, 2006).…”

Section: Discussion Hyoid Skeletonmentioning

confidence: 99%

“…Only the pipid Hymenochirus has ossified hyalia and the pipid Pipa lacks hyalia (Ridewood, 1897b;Cannatella and Trueb, 1988). Hyalia are discontinuous in some anurans (scaphiopodids, Pelodytes, Rhinophrynus, and Lepidobatrachus spp.)…”

Section: Discussion Hyoid Skeletonmentioning

confidence: 99%

“…5D, 6B, and 7B,C). This muscle is single in Leiopelma, Discoglossus (Trewavas, 1933), some pipoids (Ridewood, 1897b;Trueb and Gans, 1983), and Lepidobatrachus laevis (Fig. 5B).…”

Section: Buccal Floor Hyoid and Tongue Musclesmentioning

confidence: 99%

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Hyoid Skeleton, Its Related Muscles, and Morphological Novelties in the Frog Lepidobatrachus (Anura, Ceratophryidae)

Fabrezi

Lobo

2009

The Anatomical Record

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Many traits of the skull of ceratophryines are related to the capture of large prey independently of aquatic or terrestrial feeding. Herein, detailed descriptions of the development of hyoid skeleton and the anatomy of muscles responsible for hyoid and tongue movements in Lepidobatrachus laevis and L. llanensis are provided and compared with those of other neobatrachians. The aquatic Lepidobatrachus has special features in its hyoid skeleton that integrates a set of derived features convergent with the conditions observed in non-neobatrachian anurans and morphological novelties (e.g., dorsal dermal hyoid ossification) that deviate from the generalized pattern found in most frogs. Further, reduction of fibers of muscles of buccal floor, reduction or loss of hyoid muscles (m. geniohyoideus rama lateralis, anterior pair of m. petrohyoideus posteriores), small tongue, and simplified tongue muscles are also morphological deviations from the pattern of terrestrial ceratophryines, and other aquatic ceratophryids (e.g., Telmatobius) that seem to be related to feeding underwater. The historical derived features shared with Chacophrys and Ceratophrys involved in megalophagy are conserved in Lepidobatrachus and morphological changes in the hyoglossal apparatus define a unique functional complex among anurans.

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Section: Discussion Hyoid Skeletonmentioning

confidence: 99%

Section: Discussion Hyoid Skeletonmentioning

confidence: 99%

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Hyoid Skeleton, Its Related Muscles, and Morphological Novelties in the Frog Lepidobatrachus (Anura, Ceratophryidae)

Fabrezi

Lobo

2009

The Anatomical Record

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“…On the other hand, the tables created for staging egg-brooding anurans, e.g., Gastrotheca riobambae (Del Pino and Escobar 1981) or anurans that put terrestrial eggs and lack free-swimming larval stages, e.g., Crinia nimbus (Mitchell and Swain 1996), Eleutherodactylus coqui (Townsend and Stewart 1985) and Oreobates barituensis (Goldberg et al 2012), are species-specific and cannot be applied to Pipa. Likewise, the simplified external description of a few specimens of P. pipa by Parker (1876) and Ridewood (1897), and the staging of embryos of the same species based on size by Trueb et al (2000) render comparisons difficult to make.…”

mentioning

confidence: 99%

A simplified table for staging embryos of the pipid frog Pipa arrabali

Araújo

Haddad

Silva

et al. 2016

An. Acad. Bras. Ciênc.

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Pipa is a Neotropical genus of frogs that dwell in freshwater environments. It includes four species that lack free-swimming larvae (P. aspera, P. arrabali, P. pipa, and P. snethlageae) and three with tadpoles (P. carvalhoi, P. myersi, and P. parva). Developmental tables such as the one proposed by Nieuwkoop and Faber might be useful for Pipa species with tadpoles. However, for the other Pipa species, to determine stages by this table or by any of the tables already prepared for frogs without tadpoles (e.g., Crinia nimbus, Eleutherodactylus coqui, and Oreobates barituensis) is impossible. By using embryonic, juvenile, and subadult specimens, we generated a staging table for P. arrabali, from the moment limb buds were first observed until birth, based on diagnostic features such as snout-vent length; growth, morphology, and reabsorption of the external tail; growth and differentiation of fore and hind limbs; development of intestine and vent tube; position of the angle of the mouth relative to nostrils and eyes; and color of preserved individuals. Based on these observations, we discuss some noteworthy traits (e.g., posture of hands and feet). We also compare the pattern of development of P. arrabali with that of other anuran species (with and without tadpoles).

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“…The larynx produces the vocalizations used by males and females during sex-specific courtship behaviors (Ridewood, 1898;Wetzel and Kelley, 1983;Hannigan and Kelley, 1986;Tobias and Kelley, 1987). Males produce rapid trills that attract females.…”

Section: Introductionmentioning

confidence: 99%

Sexually dimorphic expression of a laryngeal-specific, androgen-regulated myosin heavy chain gene during Xenopus laevis development

Catz

Fischer

Moschella

et al. 1992

Developmental Biology

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Masculinization of the larynx in Xenopus laevis frogs is essential for the performance of male courtship song. During postmetamorphic (PM) development, the initially female-like phenotype of laryngeal muscle (slow and fast twitch fibers) is converted to the masculine form (entirely fast twitch) under the influence of androgenic steroids. To explore the molecular basis of androgendirected masculinization, we have isolated cDNA clones encoding portions of a new Xenopus myosin heavy chain (MHC) gene. We have detected expression of this gene only in laryngeal muscle and specifically in males. All adult male laryngeal muscle fibers express the laryngeal myosin (LM). Adult female laryngeal muscle expresses LM only in some fibers. Expression of LM during PM development was examined using Northern blots and in situ hybridization. Males express higher levels of LM than females throughout PM development and attain adult levels by PM3. In females, LM expression peaks transiently at PM2. Treatment of juvenile female frogs with the androgen dihydrotestosterone masculinizes LM expression. Thus, LM appears to be a male-specific, testosterone-regulated MHC isoform in Xenopus laevis. The LM gene will permit analysis of androgen-directed sexual differentiation in this highly sexually dimorphic tissue.

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On the Structure and Development of the Hyobranchial Skeleton and Larynx in Xenopus and Pipa; with Remarks on the Affinities of the Aglossa.

Cited by 52 publications

References 8 publications

Hyoid Skeleton, Its Related Muscles, and Morphological Novelties in the Frog Lepidobatrachus (Anura, Ceratophryidae)

Hyoid Skeleton, Its Related Muscles, and Morphological Novelties in the Frog Lepidobatrachus (Anura, Ceratophryidae)

A simplified table for staging embryos of the pipid frog Pipa arrabali

Sexually dimorphic expression of a laryngeal-specific, androgen-regulated myosin heavy chain gene during Xenopus laevis development

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