Ana Almendáriz

Ana Almendáriz
Escuela Politécnica Nacional | EPN · Instituto de Ciencias Biológicas

Master

About

72
Publications
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476
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Introduction

Publications

Publications (72)
Article
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Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes...
Cover Page
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Pristimantis barrigai. Photo by Ana Almendáriz
Article
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A new red-eye frog species Pristimantis (Amphibia: Strabomantidae) from Cordillera de Cóndor, Ecuador. A new species of medium-sized terrestrial frog of the genus Pristimantis (SVL female 31.5 mm, male 26.9 mm) is described from the montane forest of the Cordillera del Cóndor, southeastern Ecuador from an elevation of 2100 m. We assign provisionall...
Article
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Ecuador is one of the most reptile-diverse countries in the world, with 464 currently recognized species. Similar to other taxa, reptiles in Ecuador face important conservation challenges because of anthropogenic activities. Using distribution data of nearly 90% of the species of reptiles from continental Ecuador, as well as information on ecosyste...
Article
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We describe a small frog of the genus Pristimantis inhabiting bromeliads (snout-vent length 20.3‑23.3 mm in females, 16.1‑17.4 mm in males), from a remote sandstone plateau of the Cordillera del Condor, in southeastern Ecuador, with an altitudinal range of 2,045‑2,860 m. A phylogeny based on sequences of DNA (mitochondrial and nuclear genes) suppor...
Article
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We describe a new species of frog of the genus Chiasmocleis from the montane forests of southeastern Ecuador, at the western slopes of Cordillera del Cóndor, between 1,224‑1,630 m of elevation. Based on new sequences of mitochondrial and nuclear DNA we present phylogenetic relationships of the new species and its congeners. The phylogeny shows a cl...
Article
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Information is presented on morphological variation in the frog, Phyllomedusa ecuatoriana, with a description ot the tadpole, vocalizations, and notes on its natural history and distribution, based on material recently collected in the Cordillera del Cóndor, Zamora Chinchipe Province, Ecuador. Phyllomedusa ecuatoriana is of médium size (male SVL le...
Article
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The Cordillera del Cóndor is an area rich in unique vegetation assemblages and endemic faunal elements; the herpetofauna is especially diverse, particularly the anurans. The montane forest and sandstone tepuis, located atop large andesite and quartz formations, provide a variety of habitats and microhabitats in which the herpetofauna finds food, sh...
Article
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We describe the subsistence exploitation of an entire turtle fauna in Esmeraldas Province, Ecuador. We collected first-hand accounts and witnessed a number of capture techniques used by rural Afroecuadorian and Chachi inhabitants of the Cayapas-Santiago river basin. The diversity of techniques indicated a practical knowledge of the ecology of the s...
Article
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Ecuadorian frogs of genus Hyloscirtus comprises 16 described species, of which eleven belong to the H. larinopygion group. They are restricted to the flanks of the Andes, both east and west. An assessment of the herpetofauna in the southern part of Cordillera del Condor (montane forests on sandstone plateaus) province of Zamora Chinchipe, Ecuador,...
Article
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Ecuadorian frogs of genus Hyloscirtus comprises 16 described species, of which eleven belong to the H. larinopygion group. They are restricted to the flanks of the Andes, both east and west. An assessment of the herpetofauna in the southern part of Cordillera del Condor (montane forests on sandstone plateaus) province of Zamora Chinchipe, Ecuador,...
Article
Information is presented on morphological variation in the frog, Phyllomedusa ecuatoriana, with a description ot the tadpole, vocalizations, and notes on its natural history and distribution, based on material recently collected in the Cordillera del Cóndor, Zamora Chinchipe Province, Ecuador. Phyllomedusa ecuatoriana is of médium size (male SVL le...
Article
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The Phyllomedusa perinesos group is composed of four species that inhabit cloud forests in the eastern Andean slopes. We estimated the phylogenetic relationships among them and their closest relatives using mitochondrial DNA sequences. Our results confirm the monophyly of the group and a close relationship with the Amazonian species Phyllomedusa at...
Article
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We describe a new species of Noblella from wet, montane forest at the Sardinayacu Lake Complex between 1600–1920 m elevation in Morona Santiago, Ecuador. The new species differs from congeners in having three phalanges in the fourth finger, finely tuberculate skin on the dorsal body, pointed digital tips with marginal grooves on the fingers, a yell...
Article
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We describe a new species of Imantodes from the Chocó region of northwestern Ecuador. The new species differs most significantly from all other congeners in lacking a loreal scale. We analyze the phylogenetic relationships among species of Imantodes based on two mitochondrial genes, and postulate that the new species and Imantodes lentiferus are si...
Article
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RESUMEN Evaluaciones de herpetofauna en la provincia de Zamora Chinchipe, Ecuador, am-plían el rango de distribución geográfica de la rana venenosa Hyloxalus mystax (Duell-man y Simmons, 1988), en 51.4 kilómetros al sur del área conocida. Se provee infor-mación sobre el hábitat y se describe por primera vez el canto de los machos. ABSTRACT Evaluati...
Article
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La formación vegetal denominada Bos-que Seco Interandino del Norte (Aguirre et al. 2006) corresponde a los valles secos interandinos, cuyas alturas oscilan entre 1800 a 2600 msnm y se extienden des-de el norte en la Provincia de Imbabura hacia el sur en la Provincia de Azuay. Se destacan los valles de Chota (Imbabura), Guayllabamba (Pichincha), Pat...
Article
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RESUMEN Se informa sobre el registro de 13 especies de anfibios y 27 de reptiles, en los bosques secos y de transición de la Reserva Biológica Tito Santos. A los listados publicados an-teriormente, los datos aportan con cinco registros nuevos de anfibios y 16 de reptiles. Actualmente, en esta clase de bosques, de la provincia de Manabí, la herpetof...
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Article
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RESUMEN Evaluaciones de la herpetofauna en la provincia de Zamora Chinchipe, Ecuador, am-plían el rango de distribución de Centrolene condor (Cisneros-Heredia y Morales-Mite 2008), en 30,7 kilómetros al sur de la localidad tipo. Se presenta información sobre el hábitat y los renacuajos; se describe por primera vez el canto de los machos y se hacen...
Article
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AbstrAct The genus Excidobates comprises two species, E.captivus and E.mysteriosus, distributed in the Río Marañón basin in Peru. Herpetofaunal assessments in the eastern Andean montane for-est in Province of Zamora Chinchipe, Ecuador, resulted in the discovery of a new species of the genus, which we describe as Excidobates condor sp.nov. We provid...
Book
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El Departamento de Biología de la Escuela Politécnica Nacional por más de medio siglo se ha empeñado en la ejecución de investigaciones relacionadas con la biodiversidad de la fauna del Ecuador. Numerosas han sido las contribuciones científicas del Instituto en este campo. Basta mencionar que entre sus aportes figuran los Peces Marinos del Ecuador,...
Chapter
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Los bosques secos de la región Interandina del Ecuador se hallan ubicados en los sectores con el mayor número de asentamientos humanos tanto de tiempos pasados como de los actuales. La región Andina del Ecuador es la más deforestada del país; sin embargo, mantiene una flora única y rica en especies que en la actualidad crece en lugares escarpados y...
Conference Paper
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La Cordillera del Cóndor es un área rica en formaciones vegetales únicas y elementos faunísticos endémicos; presenta una singular diversidad herpetofaunística y particularmente de la anurofauna. Los bosques montanos y los de “tepuy”, asentados sobre piedras grandes de andesita y cuarzo crean variedad de hábitats y microhábitats, en donde la herpeto...
Article
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We provided the first confirmed report of Osteocephalus cabrerai (Cochran and Goin 1970) from Amazonian Ecuador. Two previous reports actually correspond to O. buckleyi.
Article
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We studied populations of frogs of the genus Atelopus from the Pasto Massif of the Andes in southern Colombia and north-ern Ecuador, and from the Huancabamba depression in southern Ecuador and northern Perú and conclude that they belong to six species, five of which are described as new to science. Atelopus angelito is recorded for the first time f...
Article
La descripción original del colúbrido Tantilla equatoriana fue basada en dos especímenes machos y hace énfasis en los patrones de coloración y el número relativamente alto de escamas subcaudales. Examinamos los especímenes tipo y tres especímenes adicionales de T. equatoriana para determinar si las características utilizadas para diagnosticar a est...
Article
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We describe a new species of Enyalioides from lowland cloud forests in southwestern Ecuador. This represents the third species in the genus known to occur west of the Andes in South America; the other two species are E. heterolepis and E. oshaughnessyi. Among other characters, the new species can be distinguished from other members in the genus by...
Article
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The Telmatobius of the Ecuadorian Andes and their population decline. - We summarize and update current knowledge on the three endemic species of Ecuadorian Telmatobius from central and south Andes of Ecuador: T. cirrhacelis, T. niger and T. vellardi. We provide new distributional, ecological, and natural history data. Presence/absence data for 11...
Article
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Gastrotheca longipes (Boulenger, 1882) is reported for the first time from the province of Orellana, Ecuador, from the localities of Sunkayacu River and Tiputini Biodiversity Station. These localities extend its geographical range 150-200 km NE from previous known localities in the province of Pastaza. New localioties from Peru are also reported. I...
Article
A new species of the genus Echinosaura is described from the Pacific drainages of northern Ecuador and adjacent Colombia. Evaluation of variation among congeners justifies their recognition as distinct species instead of subspecies as previously proposed. The new lizard occurs in close proximity to Echinosaura horrida and Teuchocercus keyi. /// Se...
Article
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We describe two new species of treefrogs of the genus Osteocephalus from primary forests in northeastern Amazonian Ecuador. One is a small to medium-sized species without or with only few flat dorsal tubercles in males and a large light subocular area. Tadpoles assigned to this species were found in a bromeliad and had eaten fertilized frog eggs, m...
Book
During six weeks of fieldwork at nine localities along the Pacific coast of Ecuador from Esmeraldas to Arenillas (Fig. 1), the Rapid Assessment Program (RAP) team of Conservation International inventoried plants, birds, mammals, amphibians and reptiles. The results of these surveys confirm that while the region’s plant and animal communities are no...
Article
RESUMEN Se presentan datos adicionales sobre la distribución y ecología de 70 especies de la herpetofauna de los pisosAltoandino, Temperado y Subtropical, áreas que altitudinalmente corresponden a zonas vulnerables a disminuciones poblacionales de anfibios. Cuarenta y cincoespecies corresponden a los anfibios y 25 a los reptiles. Los anfibios están...
Article
RESUMEN Se describen dos especies nuevl1sde serpientes del género Sibynomorphus colectadas en el limite de las provincias de Azuay y Loja, al occidente de los Andes. Dicho género no habla sido registrado en la fauna ecuatoriana. Las dos especies S. petersi y S. oligozonatus presentan una coloración dife-rente a la usUaldel género. Por su coloración...

Projects

Project (1)
Project
Actualización de la Lista Roja de Anfibios del Ecuador, en el marco del proyecto Conservación de los Anfibios del Ecuador y acceso a recursos genéticos (PARG)