A5018377646- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Evolution and Paleontology Studies
- Wildlife Ecology and Conservation
- Genetic diversity and population structure
- Amphibian and Reptile Biology
- High Altitude and Hypoxia
- Environmental DNA in Biodiversity Studies
- Metabolomics and Mass Spectrometry Studies
- Paleopathology and ancient diseases
- Genetic Mapping and Diversity in Plants and Animals
- Isotope Analysis in Ecology
- Microbial Community Ecology and Physiology
- Wildlife Conservation and Criminology Analyses
- Wildlife-Road Interactions and Conservation
- Avian ecology and behavior
- Archaeological and Historical Studies
- Forensic Entomology and Diptera Studies
- Animal Vocal Communication and Behavior
Austral University of Chile
2020-2024
University of Nebraska–Lincoln
2023-2024
Instituto Venezolano de Investigaciones Científicas
2014-2016
University of Carabobo
2013-2016
AbstractIn the world's highest mountain ranges, uncertainty about upper elevational range limits of alpine animals represents a critical knowledge gap regarding environmental life and presents problem for detecting shifts in response to climate change. Here we report results mountaineering mammal surveys Central Andes, which led discovery multiple species mice living at extreme elevations that far surpass previously assumed mammals. We livetrapped small mammals from ecologically diverse...
Environmental limits of animal life are invariably revised when the animals themselves investigated in their natural habitats. Here we report results a scientific mountaineering expedition to survey high-altitude rodent fauna Volcán Llullaillaco Puna de Atacama northern Chile, an effort motivated by video documentation mice (genus Phyllotis ) at record altitude 6,205 m. Among numerous trapping records altitudes >5,000 m, captured specimen yellow-rumped leaf-eared mouse ( xanthopygus...
Biologists have long pondered the extreme limits of life on Earth, including maximum elevation at which species can live and reproduce. Here we review evidence a self-sustaining population mice an that exceeds all previously reported for mammals. Five expeditions over 10 years to Volcán Llullaillaco Argentina/Chile border observed collected elevations ranging from 5,070 m mountain's base summit 6,739 (22,110 feet). Previously unreported includes observations photographs animals mummified...
In South America, shrews of the genus Cryptotis have a primarily Andean distribution. Based on specimens from non-Andean Sierra de Aroa in Venezuela, we name aroensis sp. nov., which assign to C. thomasi group thegenus owing its possession characters that include relatively large body size, luxuriant fur, moderately enlargedforefeet with elongated and narrow claws, unicuspid teeth concave posteroventral margin,ectoloph first upper molar anterior element reduced posterior element, mandible...
Information from diversity inventories was used to study patterns of biodiversity and species distribution, identify potential priority areas for conservation, guide future sampling efforts. In this context, we compiled information on non-volant small mammal communities the high Andes (>2000 m). Here, present an open source dataset containing (species composition, number individuals captured), inventory design (type traps, efforts), environment (habitat) both unpublished published...
Quaternary climate and associated vegetational changes affected the fauna of Chilean Mediterranean ecosystem. Here we studied genetic variation long-haired mouse, Abrothrix longipilis , a sigmodontine rodent endemic to this area. Within an environmentally explicit context, examined geographic distribution diversity demographic history species based on sequences mitochondrial Cytochrome-b gene 50 individuals from 13 localities large panel single nucleotide polymorphisms 17 6 localities. The...
The Sierra de Perijá is the northern extension of Cordillera Oriental Andes and includes part border between Colombia Venezuela. population small-eared shrews (Mammalia, Eulipotyphla, Soricidae, Cryptotis) inhabiting previously was known from only a single skull an individual collected in 1989. This specimen had been referred to alternatively as C. thomasi meridensis, but more precise definition Colombian Venezuelan species Cryptotis has since excluded any named species. recent collection...
Se presenta una lista actualizada de los mamíferos vivientes con registros en Chile, compilada diciembre 2020. La incluye 163 especies silvestres agrupadas 85 géneros, 31 familias y ocho órdenes. De estas especies, 20 son endémicas del país. También se provee la 22 exóticas poblaciones Chile. Dado que aún persisten áreas Chile no han sido suficientemente exploradas, al tiempo varios géneros adecuadamente revisados, debido a el estatus algunas formas nominales es debatido, avizoramos esta...
The Gran Sabana is a region of great biogeographical and conservation value that has been recently threatened due to increasing overexploitation natural resources illegal mining. Systematic survey methods are required in order study species responses landscape transformation. main objectives this were: 1) test the relationship between habitat types mammal presence Canaima National Park (NP), 2) establish baseline methodology can set guidelines for future, considering sampling limitations,...
The Chilean mammal fauna is one of the best known South America. In spite this, in last decade several new species have been described based on specimens collected country, while other previously elsewhere recorded for first time Chile. Here we keep this trend by recording Chile a long-tailed mouse genus Oligoryzomys. This mention genetic (cytochrome b gene sequences) and morphological data gathered from at four localities Quebrada de Camarones, Región Arica y Parinacota northern At these...
ABSTRACT In the world’s highest mountain ranges, uncertainty about upper elevational range limits of alpine animals represents a critical knowledge gap regarding environmental life and presents problem for detecting shifts in response to climate change. Here we report results mountaineering mammal surveys Central Andes, which led discovery multiple species mice living at extreme elevations that far surpass previously assumed mammals. We live-trapped small mammals from ecologically diverse...
The relationship between phenotypic variation and landscape heterogeneity has been extensively studied to understand how the environment influences patterns of morphological differentiation populations. Several studies had partially addressed intraspecific in sigmodontine rodent Abrothrix olivacea , focusing on characterization physiological aspects cranial variation. However, these conducted based geographically restricted populational samples, most cases, characterized were not explicitly...
SUMMARY Our understanding of the limits animal life is continually revised by scientific exploration extreme environments. Here we report discovery numerous mummified cadavers leaf-eared mice, Phyllotis vaccarum , from summits three different Andean volcanoes at elevations 6029-6233 m (19,780-20,449 ft) above sea level in Puna de Atacama (Chile-Argentina). Such were previously assumed to be completely uninhabitable mammals. In combination with a live-captured specimen same species nearby...
We report an elevational record for the Andean sigmodontine Puna Mouse
Abstract Environmental limits of animal life are invariably revised upwards when the animals themselves investigated in their natural habitats. Here we report results a scientific mountaineering expedition to survey high-altitude rodent fauna Volcán Llullaillaco Puna de Atacama northern Chile, an effort motivated by video documentation mice (genus Phyllotis ) at record altitude 6205 m. Among numerous trapping records altitudes >5000 m, captured specimen yellow-rumped leaf-eared mouse (...
Even when environmental variation over time and space is commonly considered as an important driver of population divergence, few evaluations intraspecific genetic explicitly assess whether observed structure has been caused by or correlated with landscape heterogeneity. Several phylogeographic studies have characterized the mitochondrial diversity Abrothrix olivacea, but none incorporated genetics analyses ecological niche modeling, leaving a gap in understanding species evolutionary...
ABSTRACT On the flanks of > 6000 m Andean volcanoes that tower over Atacama Desert, leaf‐eared mice ( Phyllotis vaccarum ) live at extreme elevations surpass known vegetation limits. The diet these in barren, hyperarid environments has been subject much speculation. According to arthropod fallout hypothesis, sustenance is provided by windblown insects accumulate snowdrifts (“aolian deposits”). Mice may also feed on saxicolous lichen or forms cryptic have yet be discovered such high...
On the flanks of >6000 m Andean volcanoes that tower over Atacama Desert, leaf-eared mice (
On the flanks of >6000 m Andean volcanoes that tower over Atacama Desert, leaf-eared mice (Phyllotis vaccarum) live at extreme elevations surpass known vegetation limits. What eat in these barren, hyperarid environments has been subject much speculation. According to arthropod fallout hypothesis, sustenance is provided by windblown insects accumulate snowdrifts ('aolian deposits'). It also possible feed on saxicolous lichen or forms cryptic have yet be discovered such high elevations. We...
ABSTRACT Leaf-eared mice (genus Phyllotis ) are among the most widespread and abundant small mammals in Andean Altiplano, but species boundaries distributional limits often poorly delineated due to sparse survey data from remote mountains high-elevation deserts. Here we report a combined analysis of mitochondrial DNA variation whole-genome sequence (WGS) delimit boundaries, assess timescale diversification group, examine evidence for interspecific hybridization. Estimates divergence dates...