Books by Hector E. Ramírez-Chaves
Papers by Hector E. Ramírez-Chaves
Mammalia, 2021
The stump-tailed porcupine, Coendou rufescens, is a widely distributed but scarcely documented sp... more The stump-tailed porcupine, Coendou rufescens, is a widely distributed but scarcely documented species inhabiting the Andean region of Colombia, Ecuador, Peru, and an isolated population in Bolivia. Despite the wide distribution different aspects on its biology and ecology are still unknown. We present an update to the distribution of C. rufescens, and recent observations on the anatomy, natural history, and conservation in Colombia. For this, we described the male genitalia and present data on reproductive periods, plants used and consumed, and threats. The distribution of C. rufescens comprises 12 ecoregions in an area of 376,225 km2 for the northern group (Colombia, Ecuador, and Peru) and 393 km2 for the southern group (Bolivia). The highest elevational record is in Ecuador (4387 m), being the porcupine inhabiting at highest elevations. The anatomy of the glans is similar to that observed in Coendou quichua and constitutes the second species of Coendou with available information ...
del lobo de páramo Lycalopex culpaeus (Mammalia: Canidae) en el suroccidente de Colombia con nota... more del lobo de páramo Lycalopex culpaeus (Mammalia: Canidae) en el suroccidente de Colombia con notas sobre su distribución en el país. Acta Zoológica Mexicana (n. s.), 29(2): 412-422. RESUMEN. Presentamos un nuevo registro del lobo de páramo (Lycalopex culpaeus) proveniente del suroccidente de Colombia y discutimos los registros y localidades previos de la especie para el país. La especie es conocida de tres localidades confirmadas, dos de las cuales poseen ejemplares de referencia, mientras que la tercera es presentada aquí, a partir de un registro fotográfico obtenido en el año 2011. Todas las localidades confirmadas se localizan en el Nudo de Los Pastos, departamento de Nariño, suroccidente de Colombia. Otras localidades y registros de la especie en la literatura requieren de evi-dencias adicionales que soporten la presencia de la especie en dichas zonas, mientras que los registros de la cordillera Central en el departamento del Valle del Cauca, Tolima y la cordillera Occidental en...
Mammalian Species
Plecturocebus caquetensis (Defler, Bueno, and García, 2010) is a Neotropical primate commonly cal... more Plecturocebus caquetensis (Defler, Bueno, and García, 2010) is a Neotropical primate commonly called the Caquetá titi monkey. It is small-sized with long, soft pelage of mixed coloration including grayish and buffy brown to agouti tones. It lacks the blackish or whitish band that is present on the forehead of closely related species. The tail is agouti-colored and slightly banded at its base. Endemic to the Amazonian region of Colombia with a distribution in areas near the eastern slopes of the Eastern and Central Cordillera of the Andes, P. caquetensis is confirmed in 104 localities in the departments of Cauca and Caquetá in Colombia. P. caquetensis is considered “Critically Endangered” (CR) by the International Union for Conservation of Nature and Natural Resources.
El orden Carnivora constituye uno de los grupos de fauna que más ha llamado la atención del hombr... more El orden Carnivora constituye uno de los grupos de fauna que más ha llamado la atención del hombre. A través de la historia, las comunidades humanas se han beneficiado de estos mamíferos en varios sentidos. Muchas especies han sido cazadas con fines medicinales, de consumo, de vestido, o para ser mantenidas como mascotas. Ecológicamente, los carnívoros ocupan los niveles más altos de las cadenas tróficas y juegan un papel importante en el control de poblaciones de vertebrados. Además, al ser considerados especies carismáticas, los carnívoros juegan un papel importante como objetivo central de programas de conservación de vida silvestre. Sin embargo, a pesar de su gran importancia económica, ecológica y cultural, y a que ocupan todos los ecosistemas del país, el conocimiento sobre la ecología y taxonomía de este grupo de fauna es escaso y en algunos casos no confiable o verificable. Adicionalmente, en muchas ocasiones el acceso a la información es limitado o se presenta en un lenguaj...
Boletín Científico Centro de Museos Museo de Historia Natural
Objetivos: Evaluar el estado actual de la Colección de Mamíferos del Museo de Historia Natural de... more Objetivos: Evaluar el estado actual de la Colección de Mamíferos del Museo de Historia Natural de la Universidad de Caldas. Alcance: Por el uso de las colecciones en los procesos de investigación y docencia, éstas requieren de un monitoreo periódico para evitar su deterioro y garantizar su permanencia. Metodología: Se realizó la sistematización (actualización de la base de datos al 2017-2018), e identificación de los especímenes que lo requerían y se estimó el índice de salud (ISC) con el propósito de comparar el estado actual con respecto a las condiciones ideales propuestas para todas las colecciones biológicas del país. Principales resultados: La colección de mamíferos cuenta con más de 1500 ejemplares catalogados pertenecientes a 12 órdenes, 37 familias y 179 especies. El 85,5% de los ejemplares están identificados hasta especie. Los órdenes más representativos dentro de la colección son Chiroptera con 1019 especímenes de 96 especies, con el 89,5% de los individuos identificados...
Check List
Dasyprocta azarae Lichtenstein, 1823 is currently distributed in Argentina, Brazil, and Paraguay,... more Dasyprocta azarae Lichtenstein, 1823 is currently distributed in Argentina, Brazil, and Paraguay, with controversial records in Bolivia. Recent records using trail cameras have expanded its distribution in the Chaco region of Paraguay, but its distribution remains unclear because of its morphological similarity to species in Bolivia and northwestern Argentina. We present an updated map of distribution of D. azarae based on the review of specimens in biological collections and literature. Our results show that D. azarae is distributed in four biomes, across 11 ecoregions, and has an extent of occurrence of 2,512,985 km2.
We describe the advertisement call of seven males and observations on the natural history related... more We describe the advertisement call of seven males and observations on the natural history related to the parental attention by males, of a population of nurse frogs attributed to the Leucostethus fraterdanieli complex from the Central Cordillera in the Department of Caldas, Colombia. The advertisement call consists of a long sequence of repeated (x̅ = 143 notes.min-1) pulsed notes, which have an average duration of 79 ± 17 ms (range 63-122 ms), separated by time intervals between 187-413 ms (289 ± 67 ms). The dominant frequency values are in the range between 3209-3520 Hz. Our results suggest differences in temporal and spectral parameters between the population studied and other populations assigned to L. fraterdanieli, L. brachistriatus, and the recently described L. jota.Describimos el canto de advertencia de una población atribuida a Leucostethus fraternadieli de los Andes centrales de Colombia, basados en el análisis temporal y ...
Neotropical Biology and Conservation, 2021
Two iconic and charismatic species that inhabit the northern Andes of South America are the Andea... more Two iconic and charismatic species that inhabit the northern Andes of South America are the Andean bear (Tremarctos ornatus) and the Mountain tapir (Tapirus pinchaque). Both species can be found sympatrically in several areas of Colombia, Ecuador, and northern Peru. Despite their overlap in distribution, little is known about interactions between both species, with few reported cases of Andean bear attacks on the Mountain tapir. Here, we report a possible attack by an Andean bear on a Mountain tapir in the northern part of Puracé National Natural Park, Colombia based on strong wounds and marks on a tapir’s back and rump. The wounds match typical attack patterns generated by Andean bears and corroborates previous camera traps records of bears attacking tapirs in this locality.
In Colombia, records of fishes of the family Loricariidae transplanted in different freshwater sy... more In Colombia, records of fishes of the family Loricariidae transplanted in different freshwater systems are unknown. In this work, the history of the transplant of the loricariid Pterygoplichthys undecimalis , that is naturally distributed in several rivers different rivers that drain to the Caribbean of Colombia, into the upper Patia River Basin, that drains to the Pacific is described. Our observations show that the species has been successfully established in different tributaries of the Patia River, with the first records during 2006 and the most recent records in 2016.
The Zoologische Staatssammlung Muenchen (ZSM), Germany, possesses an historical value because is ... more The Zoologische Staatssammlung Muenchen (ZSM), Germany, possesses an historical value because is the depositary of important specimens that were used in the description of different species, especially from South America. Unfortunately, there is not available information about the mammals of Colombia housed at this collection. For this, 33 specimens from Colombia belonging to six orders, 14 genus, and 17 species were reviewed. Cranial and external measurements are given, as well as information of collectors and localities. Of these specimens, 23 were captured in Northern Colombia and imported to Germany to a pet store between 1954 and 1966. Due the difficulties to access to information of mammals from Colombia in European museums and collections, the information summarized here may be useful for people interested in these species.
Check List, 2020
The Western Amazonian Dwarf Porcupine, Coendou ichillus Voss & Da Silva, 2001, is poorly known in... more The Western Amazonian Dwarf Porcupine, Coendou ichillus Voss & Da Silva, 2001, is poorly known in South America. The species is known only from eight localities in the Amazon and Orinoquia regions of Brazil, Colombia, Ecuador, and Peru. In Colombia, it is known from one locality in the Orinoquia region, based on a specimen collected in 1956. We present a new distribution record which adds information about the presence of C. ichillus in the Napo Moist Forests ecoregion, in the Department of Putumayo, Amazon region of Colombia. We suggest that C. ichillus is more widely distributed in the Amazon region of the country. However, based on the number of known records to date, C. ichillus is the rarest species of porcupine.
Edentata: The Newsletter of the IUCN/SSC Anteater, Sloth and Armadillo Specialist Group, 2017
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Books by Hector E. Ramírez-Chaves
Papers by Hector E. Ramírez-Chaves