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1.
Rev. biol. trop ; 66(3): 1272-1281, jul.-sep. 2018. graf
Artigo em Inglês | LILACS, SaludCR | ID: biblio-977383

RESUMO

Abstract Whereas more than 10 % of global amphibian richness is known to occur in Colombia, almost 16 % of these species are currently classified as Data Deficient according to the IUCN. These estimates suggest that the available data for a large portion of amphibians occurring in Colombia is insufficient to assess extinction risk. Here we aim to (1) review the available information on the distribution of the Colombian Data Deficient (DD hereafter) amphibians, (2) analyze their geographic distribution, and (3) evaluate the relationship between anthropogenic impact and their current conservation status. For this, we first compiled geographical records for the DD amphibian species using primary sources. Geographical records were obtained mainly from taxonomic descriptions and non-systematic surveys. We then estimated the geographical range and inferred the potential distribution for each species using letsR and MaxEnt, respectively. We quantified the human footprint for each species and tested the relationship between spatial distribution and anthropogenic change across populations. Analyses are here based on 128 of the 129 DD amphibian species that occur in Colombia. We found that most of these species were recently described and have small geographic ranges. A large proportion of these DD amphibians inhabit the Colombian Andes, and their populations have been strongly affected by human activities. Overall, the spatial clustering suggests that many of these species have faced similar environmental and anthropogenic pressures that have contributed to their rareness. We also suggest that the conservation status for several of the analyzed DD amphibians should be changed to account for the threats they face. Rev. Biol. Trop. 66(3): 1272-1281. Epub 2018 September 01.


Resumen A pesar de que más del 10 % de la riqueza global de anfibios se encuentra en Colombia, cerca del 16 % de estas especies es actualmente clasificada con Datos Deficientes según la IUCN. Estas estimaciones sugieren que los datos disponibles para esta gran porción de anfibios que habitan en Colombia, son insuficientes para evaluar su riesgo de extinción. En este documento nosotros (1) revisamos la información disponible sobre la distribución de los anfibios colombianos con Datos Deficientes (ó DD), (2) analizamos su distribución geográfica, e (3) hipotetizamos sobre la relación entre el impacto antropogénico y su estado de conservación. Para esto, compilamos los registros geográficos para las especies de anfibios DD usando referencias primarias. Los registros geográficos fueron obtenidos principalmente a partir de descripciones taxonómicas y búsquedas no sistemáticas. Para estimar la distribución geográfica e inferir la distribución potencial de cada especie usamos letsR y MaxEnt, respectivamente. Cuantificamos la huella humana para cada especie y evaluamos la relación entre la distribución espacial y el cambio antropogénico entre poblaciones. Los análisis fueron basados en 128 de las 129 especies de anfibios que se encuentran en Colombia y actualmente son clasificadas como DD. Encontramos que la mayoría de estas especies fueron descritas recientemente, y presentan una distribución geográfica reducida. Una gran proporción de estas especies de anfibios DD habitan los Andes colombianos, y sus poblaciones han sido fuertemente afectadas por las actividades humanas. Este agrupamiento geográfico sugiere que muchas de estas especies enfrentan similares presiones ambientales y antropogénicas que contribuyen a su rareza. Sugerimos además que el estado de conservación para muchas de las especies de anfibios DD aquí analizados podría ser reevaluado para considerar las amenazas que enfrentan.


Assuntos
Colômbia , Anfíbios
2.
Zootaxa ; 4392(3): 598-600, 2018 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-29690401

RESUMO

The name Bufo brasiliensis was proposed by Laurenti (1768) and, for a long time, has been associated with the widely distributed Marine toad - Rhinella marina (Linnaeus, 1758). However, we found several inconsistences in this taxonomic proposal and disagree with it. We argue that the specimen illustrated does not correspond to any bufonid form (even less the Neotropical genus Rhinella) based on the following argumentation presented below. Laurenti (1768) used Seba's (1734) illustration in plate 73 (Fig. 1) to establish the name B. brasiliensis.


Assuntos
Bufonidae , Animais
3.
Zootaxa ; 4193(3): zootaxa.4193.3.9, 2016 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-27988696

RESUMO

We redescribe Pristimantis colomai (Lynch & Duellman, 1997) on the basis of new specimens from Colombia and Ecuador. Also provide a new diagnosis, reassess its distribution, and describe the mating call for the first time. Besides the data in the original description, only is available for this species: (i) new records from Ecuador (Yánez-Muñoz et al. 2011) and (ii) molecular phylogenetic inferences that place this species in the Pristimantis ridens series (Hedges et al. 2008; Padial et al. 2014). Pristimantis colomai is currently classified as endangered due to its restrict distribution and habitat quality (Castro et al. 2004).


Assuntos
Anuros/anatomia & histologia , Anuros/fisiologia , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Anuros/classificação , Anuros/crescimento & desenvolvimento , Tamanho Corporal , Ecossistema , Feminino , Masculino , Tamanho do Órgão , Reprodução , Vocalização Animal
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