Revisiting the contribution of larval characters to an analysis of phylogenetic relationships of basal anurans

Púgener, L. Analía; Maglia, Anne M.; Trueb, Linda

doi:10.1046/j.1096-3642.2003.00075.x

Cited by 81 publications

(100 citation statements)

References 62 publications

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“…Instead, a single, continuous and median plate of cartilage is first visible in histological sections through the anterior ethmoid region. Several studies have accepted the homology between the paired suprarostrals of most anurans and the median suprarostral plate of pipids (Sokol, 1975(Sokol, , 1977Trueb and Hanken, 1992;Swart and de Sá, 1999;Pugener et al, 2003). Others, however, have denied this homology because the suprarostral plate does not appear to form from paired chondrogenic precursors (de Beer, 1937;Sedra and Michael, 1957;Roček and Vesley, 1989;Roček, 2003).…”

Section: Runx2 In Larval Xenopus 1657mentioning

confidence: 99%

Runx2 is essential for larval hyobranchial cartilage formation in Xenopus laevis

Kerney

Gross

Howard

2007

Developmental Dynamics

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The vertebrate transcription factor protein Runx2 is regarded as a "master regulator" of bone formation due to the dramatic loss of the osseous skeleton in the mouse homozygous knockout. However, Runx2 mRNA also is expressed in the pre-hypertrophic cartilaginous skeleton of the mouse and chicken, where its developmental function is largely unknown. Several tiers of Runx2 regulation exist in the mouse, any of which may account for its seeming biological inactivity during early stages of skeletogenesis. Unlike mouse and chicken, zebrafish require Runx2 function in early cartilage differentiation. The present study reveals that the earlier functional role of Runx2 in cartilage differentiation is shared between zebrafish and Xenopus. A combination of morpholino oligonucleotide injections and neural crest transplants indicate that Runx2 is involved in differentiation of the cartilaginous hyobranchial skeleton in the frog, Xenopus laevis. Additionally, in situ hybridizations show runx2 mRNA expression in mesenchymal precursors of the cartilaginous skull, which reveals the earliest pre-patterning of these cartilages described to date. The early distribution of runx2 resolves the homology of the larval suprarostral plate, which is one of the oldest controversies of anuran skull development. Together these data reveal a shift in Runx2 protein function during vertebrate evolution towards its exclusive roles in cartilage hypertrophy and bone differentiation within the amniote lineage. Developmental Dynamics 236:1650 -1662, 2007.

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Section: Runx2 In Larval Xenopus 1657mentioning

confidence: 99%

Runx2 is essential for larval hyobranchial cartilage formation in Xenopus laevis

Kerney

Gross

Howard

2007

Developmental Dynamics

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“…The monophyly of this collection of families was supported by some authors (e.g., Ford and Cannatella, 1993;García-París et al, 2003), but recent morphological (e.g., Haas, 2003;Pugener et al, 2003) and DNA sequence evidence (Roelants and Bossuyt, 2005;San Mauro et al, 2005) does not support its monophyly. Ford and Cannatella (1993;fig.…”

Section: ''Transitional'' Frogsmentioning

confidence: 82%

Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Frost¹,

Grant²,

Faivovich³

et al. 2006

American Museum of Natural History Research Library

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“…Os caracteres larvais são muito utilizados como ferramentas complementares nos estudos das relações ecológicas e filogenéticas dos anuros (Wassersug 1976, Wassersug & Heyer 1988, Spirandeli-Cruz 1991, d'Heursel & de Sá 1999, Echeverría & Lavilla 2000, Eterovick & Sazima 2000, Haas 2003, Pugener et al 2003, Weber & Carasmaschi 2006.…”

Section: Introductionunclassified

Morfologia bucal interna dos girinos de Leptodactylus labyrinthicus Spix, 1824 (Amphibia: Anura: Leptodactylidae)

Miranda

Ferreira

2008

Biota Neotrop.

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Abstract:The microanatomy of the oral disc and the buccal cavity of the tadpole of Leptodactylus labyrinthicus is described and compared with other species included in the L. pentadactylus species group. Thirty-five tadpoles between stages 25 and 46 had been dissected and analyzed in scanning electron microscopy. The oral and internal buccal morphology was analyzed in tadpoles between stages 36 and 39. The buccal morphology of the tadpole of L. labyrinthicus is similar to other tadpoles with adaptation to macrophagy, such as the strong queratinization of the jaw, reduction of the internal buccal structures and presence of one glote uncovered, propitious to carnivorous diets. The tadpole of L. pentadactylus species group share this trend to the reduction of the structures of selection and capture of particle, including reduction in the number of the buccal roof and floor arena papillae, reduction or absence of anterior papillae on the buccal pocket, only two postnarial papillae, small lateral ridge papillae and glandular zones restricted in narrow bands on the edge of velum. In the tadpoles of genera Leptodactylus the larval morphology reflects the current groups considered for this genera. Resumo: A microanatomia do disco oral e da cavidade bucal da larva de Leptodactylus labyrinthicus é descrita e comparada com outras espécies do gênero pertencentes ao grupo de L. pentadactylus. Trinta e cinco girinos entre os estágios 25 e 46 foram dissecados e analisados em microscopia eletrônica de varredura. A descrição da morfologia oral foi feita utilizando larvas entre os estágios 36 e 39. A morfologia oral da larva de L. labyrinthicus é similar às descritas para outros girinos com adaptação a macrofagia, com forte queratinização das coberturas das mandíbulas, redução das estruturas bucais internas e presença de uma glote descoberta, propícias às dietas carnívoras. As larvas do grupo de L. pentadactylus compartilham essa tendência à redução das estruturas de seleção e captura de partículas, apresentando redução no número de papilas da arena do assoalho e do teto bucal, redução ou ausência das papilas anteriores às bolsas bucais, apenas duas papilas pós-nasais, pequenas papilas laterais à crista mediana e zonas glandulares restritas a estreitas faixas no bordo velar. Nos girinos do gênero Leptodactylus a morfologia larvária reflete os grupos atuais propostos para o gênero. Palavras-chave: morfologia oral interna, macrofagia, carnivoria, grupo L. pentadactylus.

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Revisiting the contribution of larval characters to an analysis of phylogenetic relationships of basal anurans

Cited by 81 publications

References 62 publications

Runx2 is essential for larval hyobranchial cartilage formation in Xenopus laevis

Runx2 is essential for larval hyobranchial cartilage formation in Xenopus laevis

Supplemental Material for 'The amphibian tree of life. (Bulletin of the AMNH ; no. 297)'

Morfologia bucal interna dos girinos de Leptodactylus labyrinthicus Spix, 1824 (Amphibia: Anura: Leptodactylidae)

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