Rediscovery of Melanophryniscus pachyrhynus (Miranda-Ribeiro, 1920) (Amphibia: Anura: Bufonidae) in southern Brazil, with addenda to species redescription

Vaz-Silva, Wilian; Balestrin, Rafael Lucchesi; Di-Bernardo, Marcos

doi:10.2994/1808-9798(2008)3[36:rompma]2.0.co;2

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Some species of Melanophryniscus have been shown to possess skin toxins, such as lipophilic alkaloids, which are obtained through their diet ([ 4 ]; see also [ 5 , 6 ]. The current richness of the genus is likely underestimated, and the collection of new specimens and genetic analyses are expected to reveal new species [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Three New Species of Phytotelm-Breeding Melanophryniscus from the Atlantic Rainforest of Southern Brazil (Anura: Bufonidae)

et al. 2015

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Three new species of Melanophryniscus are described from the Serra do Mar mountain range of the state of Santa Catarina, southern Brazil. All species are found at intermediate to high altitudes and share phytotelm-breeding as their reproductive strategy. The new species are distinguished from other phytotelm-breeding Melanophryniscus based on different combinations of the following traits: snout-vent length, presence of white and/or yellow spots on forearms, mouth, belly and cloaca, pattern and arrangement of warts, and presence and number of corneous spines. The discovery of these species in a rather restricted geographical area suggests that the diversity of phytotelm-breeding species of Melanophryniscus might be severely underestimated. The conservation status of these species is of particular concern, given that one of them is at risk of extinction not only due to its restricted habitat, but also because of anthropogenic disturbances.

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Section: Introductionmentioning

confidence: 99%

Three New Species of Phytotelm-Breeding Melanophryniscus from the Atlantic Rainforest of Southern Brazil (Anura: Bufonidae)

et al. 2015

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“…Information on habitat use during the non-breeding period is still lacking for most species. Melanophryniscus pachyrhynus is associated with rocky outcrop environments in upland open areas in the South American Pampa biome [ 32 – 33 ], in the southernmost part of Brazil and Uruguay. Much of its ecology remains unknown and the species is listed as Data Deficient in the IUCN Red List [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Much of its ecology remains unknown and the species is listed as Data Deficient in the IUCN Red List [ 34 ]. Information about habitat preferences outside breeding sites is limited to observations of specimens found under rocks near small watercourses [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Unraveling fine-scale habitat use for secretive species: When and where toads are found when not breeding

2018

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A good understanding of species-habitat associations, or habitat use, is required to establish conservation strategies for any species. Many amphibian species are elusive and most information concerning amphibian habitat use comes from breeding sites where they are comparatively easy to find and study. Knowledge about retreat sites is extremely limited for most species and for the greater part of the year. For such species, it is especially important to factor in detection probability in habitat analyses, because otherwise distorted views about habitat preferences may result, e.g., when a species is more visible in habitat type B than in A, even though A may be preferred. The South American red-belly toad, Melanophryniscus pachyrhynus, is a range-restricted species from Southern Brazil and Uruguay that inhabits open areas with rocky outcrops and is usually seen only during explosive breeding events. Here we studied the fine-scale habitat use of the red-belly toad outside of the breeding season to identify retreat sites and test for the importance of accounting for species imperfect detection, using Bayesian occupancy models. We identified shrub density and the number of loose rocks as important predictors of occupancy, while detection probability was highest at intermediate temperatures. Considering the harsh (dry and hot) conditions of rocky outcrops, shrubs and loose rocks may both work as important refuges, besides providing food resources and protecting against predation. Rocky outcrops have been suffering changes in habitat configuration and we identify nonbreeding habitat preferences at a fine scale, which may help to promote population persistence, and highlight the importance of accounting for imperfect detection when studying secretive species.

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The advertisement and release calls of Melanophryniscus pachyrhynus (Miranda-Ribeiro, 1920) from the central region of Rio Grande do Sul, southern Brazil

Caldart

Santos²,

Maneyro³

2013

Acta Herpetologica

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Rediscovery of Melanophryniscus pachyrhynus (Miranda-Ribeiro, 1920) (Amphibia: Anura: Bufonidae) in southern Brazil, with addenda to species redescription

Cited by 3 publications

References 7 publications

Three New Species of Phytotelm-Breeding Melanophryniscus from the Atlantic Rainforest of Southern Brazil (Anura: Bufonidae)

Three New Species of Phytotelm-Breeding Melanophryniscus from the Atlantic Rainforest of Southern Brazil (Anura: Bufonidae)

Unraveling fine-scale habitat use for secretive species: When and where toads are found when not breeding

The advertisement and release calls of Melanophryniscus pachyrhynus (Miranda-Ribeiro, 1920) from the central region of Rio Grande do Sul, southern Brazil

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