NOTES ON THE DISTRIBUTION AND CONSERVATION OF Ceratophrys stolzmanni (STEINDACHNER, 1882) (Anura: Ceratophryidae) IN ECUADOR (original) (raw)
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On the natural history of the Caatinga Horned Frog, Ceratophrys joazeirensis (Anura: Ceratrophryidae), a poorly known species of northeastern Brazil. Data on reproduction, sexual dimorphism, and the diet of Ceratophrys joazeirensis, the only species of the genus that occurs in the Brazilian semiarid Caatinga Biome, are presented. Anurans were observed and collected in Santa Maria Municipality, state of Rio Grande do Norte in northeastern Brazil. Fieldwork was conducted at night either after or during rains throughout the rainy season in 2010–2013. Searches were conducted near places where males were calling, usually around the perimeters of bodies of water. Reproduction is explosive in the of 2011–2013. However, in 2010, neither calling males nor active females were found, even after rainy days. Although males call in temporary and permanent ponds, most males call in the marginal vegetation of temporary ponds. Females C. joazeirensis larger than males. The average clutch size is 2555.0 ± 1551.1 eggs; clutch size is not important prey categories in the diet of C. joazeirensis are anurans, followed by coleopterans and plant material. The apparent importance of anurans in the diet probably is related to the number of anuran species that co-occur with C. joazeirensis and the voracious feeding behavior of ceratophryids.
Checklist, 2020
The Ecuadorian coast ecosystems are considered fragile due to anthropic activities, such as livestock production and agriculture, which are important economically. In this study, we document the herpetofauna of Engabao, in Playas Canton, Ecuador, and extend the distribution range of one species of frog. We performed day and night sampling, including transect surveys and visual encounters. Ten species of amphibians and reptiles were recorded. Included among these species the Threatened Ceratophrys stolzmanni (Steindachner, 1882). Engabao is an area intended for livestock production.
Revista U.D.C.A Actualidad & Divulgación Científica
The central area of the department of Choco (Colombia), is composed of a tropical rain forest. Has a large of variety of amphibians that provides an ecosystem service, being the Family Centrolenidae listed as an excellent indicator of the forest condition. The focus of this study was to determine the richness and distribution in the habitats of the family Centrolenidae in two vegetation coverings in a tropical rain forest of the department of Choco, using the Visual Encounter Survey (VES) method with an effort of 240 per hour. There were 53 individuals registered, distributed in five genera and six species, being the Hyalinobatrachium genus the best represented. The most abundant species was Teratohyla spinosa, being the most dominant for the secondary forest and Hyalinobatrachium collymbiphyllum for the primary forest. Espadarana callistomma and Teratohyla spinosa were the most plastic species in terms of habitat since they were recorded in both coverages. The centrolenids register...
Zootaxa, 2019
Ceratophrys is the most diverse and widely distributed genus of Ceratophryidae, the clade of South American horned frogs. Numerous anuran fossil remains, including several fossil species, have been assigned to this genus. However, this seemingly extensive fossil record is problematic because several of the fossils are not properly identified and most of the taxonomic assignations are not justified. The present study traces all the fossil material attributed to Ceratophrys, clarifying, when possible, institutional allocations. Each of the remains was examined and its taxonomic assignation revisited, based on the morphology and possible synapomorphies of the genus, including its living species. Numerous fossils were properly identified and assigned with certainty to Ceratophrys. Only one fossil species, Ceratophrys ameghinorum, is considered valid. This information, along with recently reported evidence of fossil Ceratophrys, is briefly summarized to serve as a practical reference for...
A Minute New Ecuadorian Andean Frog (Anura: Strabomantidae, Pristilnantis
Herpetologica, 2008
We describe a new species of Pristimantis from a cloud forest at 2450-2800 m in the Cordillera Oriental in southern Ecuador (Zamora Chinchipe). The new species has a maximum snout-vent length of 17.9 mm (average SVL of 21 males 5 12.3 mm 6 1.2, and of 19 females 5 15.9 mm 6 1.3). This new species is the second smallest frog from Ecuador and smallest Pristimantis. Morphologically and phylogenetically, the new species is similar to P. caeruleonotus and P. colodactylus. It is distinguished from them and its congeners by its size, tuberculation, a distinct color pattern consisting of tan blotches on dorsum, spots on a brown venter, minute brown spots on anterior and posterior surfaces of the thighs, and other morphological features. Determination of small body size in frogs is discussed and meristic data of 40 minute frogs are compiled.
We describe a new species of Pristimantis from the Tinajillas-Rio Gualaceño Ecological Conservation Area, Morona San-tiago province, an area of montane forest in the southeastern Andes of Ecuador. Pristimantis nimbus sp. nov. is similar to P. altamazonicus, P. ardyae, P. bambu, P. bellator, P. caeruleonotus, P. cethospilus, P. churuwiai, P. croceoinguinis, P. cryptomelas, P. diadematus, P. flavobracatus, P. gualacenio, P. nigrogriseus, P. ventrimarmoratus, and P. versicolor from which it can be distinguished by the presence of flash marks on flanks, groin, and arm insertion composed of bright-yellow oval spots and blotches surrounded by dark brown to black, forming a reticulated pattern, by having slightly enlarged toe pads, a finely shagreen dorsum lacking dorsal folds, and males having nuptial pads but lacking vocal slits. Pristimantis nimbus sp. nov. is only known from the type locality, at elevations between 2200–2400 masl. All individuals of the new species were found at night, perching on leaves and branches between 80 cm to 150 cm above the ground. The analysis of stomach contents rendered a total of 17 prey items of different unidentified species in five orders (Aranae, Coleoptera, Diptera, Hemiptera, Lepidoptera). Other species found in the area are Pristimantis aff. altamnis, P. galdi, P. proserpens, P. tinajillas, P. versicolor, Rhinella margaritifera, Noblella sp. and three unidentified species of Pristimantis.
Check List, 2015
Pristimantis myersi is a small Andean frog that inhabits paramos, sub-paramos and upper Andean forests at elevations between 2,900–3,275 m. It is known from about a dozen localities in the southern end of the Cordillera Central of the Colombian Andes. Herein, we report for the first time the presence of this species in Ecuador, based on ten specimens from three localities in the provinces of Imbabura and Sucumbíos. The species’ range is extended and a distribution map with the Ecuadorian records is provided.
Effect of climate change on distribution of species of common horned frogs in South America
PLOS ONE, 2018
Our main objectives were to verify the effect of climate change on distribution of frogs of the family Ceratophryidae and if the legal protection areas in South America will be effective or ineffective in ensuring the preservation of the toads this family in coming decades. The results showed that in the last 140,000 years, species of the family Ceratophryidae expanded and contracted their distribution areas, which naturally reflected the climate and vegetation changes in the Quaternary of South America. The maps of projections showed that changes in temperature determined the area of habitat suitability of 63.7% of the species of ceratophrids both during the last interglacial period and nowadays, and it seems that this will also be the case for the next 62 years. Given the current concerns about future extinctions in the tropics, it is prudent to examine, with special attention, the effects of climate fluctuations on the diversity and distribution of species, because the current estimates of reduction in biodiversity caused by habitat destruction and emission of greenhouse gases are comparable to estimated reductions during glacial intervals.