A new species of Rhinella (Anura: Bufonidae) from Ischigualasto Provincial Park, San Juan, Argentina

Sanabria, Eduardo Alfredo; Quiroga, Lorena B.; Arias, Federico; Cortez, Ricardo O.

doi:10.11646/zootaxa.2396.1.4

Cited by 6 publications

(7 citation statements)

References 2 publications

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“…This latter group consists of a moderately supported clade (70%) comprising R. mirandaribeiroi and most of the specimens of R. granulosa, which is the sister taxon of a poorly supported clade (< 50%) consisting of a specimen of R. granulosa (CFBH 19670), a polyphyletic R. merianae, a monophyletic R. humboldti, and the only exemplar of R. centralis. In summary, six of the 12 included species of the R. granulosa group (as defined by Narvaes andRodrigues, 2009 andSanabria et al, 2010) were recovered as non-monophyletic in the DO nuclear analysis: R. bergi, R. dorbignyi, R. fernandezae, R. granulosa, R. major, and R. merianae.…”

Section: Resultsmentioning

confidence: 98%

“…Although they share nearly identical mitochondrial haplotypes, we do not consider R. bernardoi to be conspecific with R. dorbignyi due its distinctive nuclear genotypic (Fig. ) and morphological distinctiveness (see Sanabria et al., ). The habitats of R. bernardoi and R. dorbignyi are very different and separated by at least 1000 km (straight line).…”

Section: Discussionmentioning

confidence: 99%

“…Subsequently, Sanabria et al. () described a new species from San Juan, western Argentina ( R. bernardoi ). Finally, Jansen et al.…”

Section: Introductionmentioning

confidence: 99%

“…Narvaes and Rodrigues (2009) suggested that the distribution of taxa within the R. granulosa group is associated with open areas and congruent with the morphoclimatic domains defined by Ab'Saber (1977), instead of being linked to hydrographic basins as proposed earlier (Gallardo, 1965(Gallardo, , 1969. Subsequently, Sanabria et al (2010) described a new species from San Juan, western Argentina (R. bernardoi). Finally, Jansen et al (2011) pointed to morphological and molecular differentiation in a population assigned to R. mirandaribeiroi of Bolivia, suggesting that more studies are necessary to confirm its taxonomic status.…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic relationships of toads of theRhinella granulosagroup (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

et al. 2015

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The Rhinella granulosa group consists of 13 species of toads distributed throughout open areas of South America and Panama. In this paper we perform a phylogenetic analysis considering all but one species of the group, employing five nuclear and four mitochondrial genes, for up to 7910 bp per specimen. Separate phylogenetic analyses under direct optimization (DO) of nuclear and mitochondrial sequences recovered the R. granulosa group as monophyletic and revealed topological incongruence that can be explained mainly by multiple events of hybridization and introgression, both mitochondrial and nuclear. The DO combined analysis, after the exclusion of putatively introgressed or heterozygous genomes, resulted in a phylogenetic hypothesis for the R. granulosa group in which most of the species are recovered as monophyletic, but with interspecific relationships poorly supported. The optimization of morphological (adult and larval), chromosomal, and behavioural characters resulted in 12 putative phenotypic synapomorphies for this species group and some other synapomorphies for internal clades. Our results indicate the need for additional population genetic studies on R. dorbignyi and R. fernandezae to corroborate the taxonomic status of both taxa. Finally, we discuss biological and genetic characteristics of Bufonidae, as possible explanations for the common occurrence of hybridization and introgression observed in some lineages of this family.

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Section: Resultsmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

“…Subsequently, Sanabria et al. () described a new species from San Juan, western Argentina ( R. bernardoi ). Finally, Jansen et al.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phylogenetic relationships of toads of theRhinella granulosagroup (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

et al. 2015

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“…All species of the R . granulosa Group are mostly distributed in open areas of South America and Panama (Gallardo, 1965;Duellman and Schulte, 1992;Duellman, 1999;Narvaes and Rodrigues, 2009;Sanabria et al, 2010).…”

Section: The Rhinella Granulosa Groupmentioning

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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The first fossil toad (Anura: Bufonidae) from the Cura-Mallín Formation (Río Pedregoso Member, middle Miocene) of Lonquimay, Araucania Region, Central Chile

Guevara

Lara

Alarcón-Muñoz

et al. 2022

Journal of South American Earth Sciences

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A new species of Rhinella (Anura: Bufonidae) from Ischigualasto Provincial Park, San Juan, Argentina

Cited by 6 publications

References 2 publications

Phylogenetic relationships of toads of theRhinella granulosagroup (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

Phylogenetic relationships of toads of theRhinella granulosagroup (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

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

The first fossil toad (Anura: Bufonidae) from the Cura-Mallín Formation (Río Pedregoso Member, middle Miocene) of Lonquimay, Araucania Region, Central Chile

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