&lt;strong&gt;Internal oral morphology in larvae of the genus &lt;em&gt;Rhinella&lt;/em&gt; Fitzinger, 1826 (Amphibia, Anura, Bufonidae) &lt;/strong&gt;

Oliveira, Marianna Isabella Rosa Rodrigues de; Weber, Luiz Norberto; Napoli, Marcelo Felgueiras

doi:10.11646/zootaxa.3745.5.1

Cited by 461 publications

(3 citation statements)

References 22 publications

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“…The tall, papilla-like median ridges of these two species differ from the trapezoid or triangular ridges described for all other species. The lack of lingual papillae was suggested as a diagnostic trait for tadpoles of the R. veraguensis group (observed in R. veraguensis and R. quechua; Cadle and Altig, 1991;Aguayo et al, 2009) as opposed to the four papillae typical of Rhinella (e.g., Vera Candioti, 2007; Rodrigues de Oliveira et al, 2013). The presence of a variable number (2-4) of papillae on the tongue anlage of R. rumbolli, however, merits a more-exhaustive revision of this character within the genus, and its evaluation in a phylogenetic context, in order to define at which level the absence of lingual papillae is apomorphic.…”

Section: Discussionmentioning

confidence: 99%

The Stream Tadpoles ofRhinella rumbolli(Anura: Bufonidae)

2014

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The Rhinella veraguensis group is likely a paraphyletic assemblage that contains 16 species of Andean toads. To date, descriptions are available for larval stages of only three species, all of which possess a distinct sucker in the abdominal region. In this study, we describe the tadpoles of Rhinella rumbolli, a medium-sized Salta Toad typical of forest streams in northwestern Argentina. Thirty-three larvae (Gosner Stages 32-36) were processed for studies of the external morphology, buccal cavity, and musculoskeletal system. These larvae show a mosaic of features, some typical of the genus and some others unique to the R. veraguensis group. Several character states are specific to R. rumbolli, namely the lack of an abdominal sucker, 2-4 lingual papillae, and the absence of adrostral cartilages. Some traits are frequent in other stream tadpoles such as the muscular tail, large oral disc with complete labial rows, and the wide and robust anterior neurocranium. Bufonid tadpoles exhibit an extraordinary variation in ecology, such as preferred microhabitat, and the diversity within the family is exemplified within the genus Rhinella. Further comparative morphological and developmental studies, framed in the context of phylogenetic hypotheses, are needed in order to explore the pattern variation in different clades and to discuss character evolution and form-function relationships.

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Section: Discussionmentioning

confidence: 99%

The Stream Tadpoles ofRhinella rumbolli(Anura: Bufonidae)

2014

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“…piauiensis , N = 2, stage 35; E. cesarii , N = 1, stage 35; E. bicolor , Argentina, N = 1, stage 35; E. bicolor , Brazil, N = 1, stage 35). Terminology of the chondrocranium follows Cannatella (1999), Haas (2003), Vera Candioti (2007) and Oliveira, Weber, and Napoli (2014). Illustrations of the external morphology, internal oral morphology, chondrocranium and hyobranchial apparatus were produced with Adobe Illustrator CS5 from photographs that had been obtained under a stereoscopic microscope with an image analyzer.…”

Section: Methodsmentioning

confidence: 99%

A survey of the external morphology, internal oral morphology, chondrocranium and hyobranchial apparatus of Elachistocleis larvae Parker, 1927 (Anura, Microhylidae)

Ferreira

Weber

2021

Journal of Morphology

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The external morphology, internal oral morphology, the chondrocranium and the hyobranchial apparatus of Elachistocleis bumbameuboi, E. cf. piauiensis, E. cesarii and E. bicolor are described and compared with each other and with other species of microhylids using available descriptions from the literature. The general morphology of Elachistocleis species is conservative in many aspects. Differences between species are subtle and are found in the body shape, the edge of the snout, fin height, if the lateral line is evident, the presence of regular pustules in the buccal roof arena, the posterolateral edge of the cartilago suprarostralis, the shape of the fenestra in the occipital region, presence or absence of fenestra hypophysea, the margin of the processus antorbitalis, expansions in the ventrolateral process, the shape and inclination of the fenestra subocularis, whether the subotic process is single or slightly bifid, and the inclination of the processus anterolateralis hyalis.

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“…Larval Chondrocranium Oliveira et al (2014) studied the chondrocranium of some species of Rhinella and reviewed the information available for other bufonids. 76.…”

Section: Adult External Morphologymentioning

confidence: 99%

Evolution in the Genus Rhinella: A Total Evidence Phylogenetic Analysis of Neotropical True Toads (Anura: Bufonidae)

Pereyra

Blotto

Baldo

et al. 2021

Bulletin of the American Museum of Natural History

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True toads of the genus Rhinella are among the most common and diverse group of Neotropical anurans. These toads are widely distributed throughout South America, inhabiting a great diversity of environments and ecoregions. Currently, however, the genus is defined solely on the basis of molecular characters, and it lacks a proper diagnosis. Although some phenetic species groups have traditionally been recognized within Rhinella, the monophyly of some of them have been rejected in previous phylogenetic analyses, and many species remain unassigned to these poorly defined groups. Additionally, the identity and taxonomy of several species are problematic and hinder the specific recognition and description of undescribed taxa. In this work, we first perform phylogenetic analyses of separate mitochondrial and nuclear datasets to test the possible occurrence of hybridization and/or genetic introgression in the genus. The comparative analysis of both datasets revealed unidirectional mitochondrial introgressions of an unknown parental species into R . horribilis ("ghost introgression") and of R . dorbignyi into R . bernardoi; therefore, the mitochondrial and nuclear datasets of these species were considered separately in subsequent analyses. We performed total-evidence phylogenetic analyses that included revised molecular (four mitochondrial and five nuclear genes) and phenotypic (90 characters) datasets for 83 nominal species of Rhinella, plus several undescribed and problematic species and multiple outgroups. Results demonstrate that Rhinella was nonmonophyletic due to the position of R . ceratophrys, which was recovered as the sister taxon of Rhaebo nasicus with strong support. Among our outgroups, the strongly supported Anaxyrus + Incilius is the sister clade of all other species of Rhinella. Once R . ceratophrys is excluded, the genus Rhinella is monophyletic, well supported, and composed of two major clades. One of these is moderately supported and includes species of the former R . spinulosa Group (including R . gallardoi); the monophyletic R . granulosa, R . crucifer, and R . marina Groups; and a clade composed of the mitochondrial sequences of R . horribilis. The other major clade is strongly supported and composed of all the species from the non-monophyletic R . veraguensis and R . margaritifera Groups, the former R . acrolopha Group, and R . sternosignata. Consistent with these results, we define eight species groups of Rhinella that are mostly diagnosed by phenotypic synapomorphies in addition to a combination of morphological character states. Rhinella sternosignata is the only species that remains unassigned to any group. We also synonymize nine species, treat three former subspecies as full species, and suggest that 15 lineages represent putative undescribed species. Lastly, we discuss the apparently frequent occurrence of hybridization, deep mitochondrial divergence, and "ghost introgression"; the incomplete phenotypic evidence (including putative character systems that could be used for future phylogenetic...

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<strong>Internal oral morphology in larvae of the genus <em>Rhinella</em> Fitzinger, 1826 (Amphibia, Anura, Bufonidae) </strong>

Cited by 461 publications

References 22 publications

The Stream Tadpoles ofRhinella rumbolli(Anura: Bufonidae)

The Stream Tadpoles ofRhinella rumbolli(Anura: Bufonidae)

A survey of the external morphology, internal oral morphology, chondrocranium and hyobranchial apparatus of Elachistocleis larvae Parker, 1927 (Anura, Microhylidae)

Evolution in the Genus Rhinella: A Total Evidence Phylogenetic Analysis of Neotropical True Toads (Anura: Bufonidae)

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