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Introduction
Publications
Publications (352)
Leaf-eared mice (genus Phyllotis) are among the most widespread and abundant small mammals in the Andean Altiplano, but species boundaries and distributional limits are often poorly delineated due to sparse survey data from remote mountains and high-elevation deserts. Here we report a combined analysis of mitochondrial DNA variation and whole-genom...
Glaucomys volans underwoodi was recently rediscovered in Honduras after 43 years since its last record; the population in the eastern region of the country is considered the southernmost within the distribution of this species. However, there is a lack of ecological information about this squirrel in their disjunct populations through Central Ameri...
Buenos Aires, a pesar de ser la provincia más poblada y transformada por la acción humana, alberga una comunidad de mamíferos sorprendentemente diversa. Por primera vez, una obra accesible a todo público, sin sacrificar rigor cientifio, reúne a todas las especies de mamíferos que habitan la región. Este libro presenta un conocimiento actualizado de...
The genus Ctenomys Blainville, 1826 includes 68 living species of small to medium-sized (100–1200 g) caviomorph rodents of subterranean habits. During the last decade, this genus has been the subject of numerous taxonomic studies, including the description of new species and the proposal of novel synonyms. Based on phylogenetic analysis of mitochon...
Ctenomys fochi es una de las especies menos estudiada del género. Hasta el momento solo ha sido documentada en dos localidades en Argentina, Chumbicha (Provincia de Catamarca) y Estancia La Providencia (Provincia de Córdoba). Sobre la base del estudio de caracteres morfológicos y genéticos de materiales depositados en la colección de mamíferos del...
Barn owls are the most widely distributed group of owls in the world and are among the most common accumulators of small vertebrate remains at archeological and paleontological sites. Despite its importance as a bone remains accumulator and predictor of paleoenvironmental conditions due to its generalist habits, the vertebrate prey of this raptor h...
Past and current climatic and environmental changes have contributed to configure actual species distributions and abundances. Knowing their evolution
over time allows discrimination between natural and anthropogenic causes in current composition of faunal communities. We evaluate the changes in
small mammal assemblages from the north-central Patag...
Se estudió la variación geográfica en la morfología craneana de Myotis riparius Handley, 1960 (Chiroptera, Vespertilionidae) a partir de 45 ejemplares que cubren prácticamente toda el área de distribución de esta especie en Argentina. Los resultados de los análisis morfométricos sugieren que las poblaciones de este murciélago en Argentina se corres...
The Andes are known to be one of the most species-rich regions on Earth, with their origination promoting formation of new habitats and acting as climatic barriers. This orogenic event was structured latitudinally with 3 major segments having different formation times and with different environmental and historical conditions. The Andean region has...
Rodentia has a high species number and chromosomal variability. The South American genus Akodon is one of the most speciose muroids, with more than 40 species included in several species groups. Here, we characterize cytogenetically specimens of Akodon from central-western Argentina. Subsequently, we reviewed and analyzed the cytogenetic data for t...
Natural history museums are vital repositories of specimens, samples and data that inform about the natural world; this Formal Comment revisits a Perspective that advocated for the adoption of compassionate collection practices, querying whether it will ever be possible to completely do away with whole animal specimen collection.
‘Rewilding’ is a nature conservation strategy gaining prominence worldwide. Established in the Northern Hemisphere, rewilding initiatives have increasingly been proposed in Argentina, but their relative merits, feasibility of implementation and accountability have lacked adequate analysis and discussion. Recently, 125
scientists and practitioners w...
The mountain cavy Galea musteloides Meyen, 1833 is a terrestrial caviomorph rodent with diurnal and colonial habits. It occupies grassland areas and rocky shrub steppes in the arid highlands of the central Andes of western Bolivia, northern Chile, and southeastern Peru. Recent phylogenetic studies based on the analysis of mitochondrial DNA showed t...
The genus Ctenomys of subterranean rodents is one of the most species-rich genera of Mammalia, with 66 living species currently recognized. However, the taxonomy of the genus is dynamic with several new species and new synonymies proposed during the last decade. One of the species groups that have undergone more changes in contents in the last year...
En los últimos años se han desarrollado en Argentina distintas intervenciones relacionadas con el rewilding (o re-asilvestramiento), abarcando una variedad de especies (e.g., grandes carnívoros, ungulados, psitácidos) y ecorregiones (e.g., Chaco Húmedo y Seco, Estepa Patagónica). El reasilvestramiento es definido como una estrategia aplicada en el...
The relationship between phenotypic variation and landscape heterogeneity has been extensively studied to understand how the environment influences patterns of morphological variation and differentiation of populations. Several studies had partially addressed intraspecific variation in the sigmodontine rodent Abrothrix olivacea, focusing on the cha...
Se estudiaron los pequeños mamíferos en dos sitios del Parque Nacional Sierra de las Quijadas (PNSQ): Desaguadero (DES) y Potrero de la Aguada (PDA), a partir de egagrópilas de Bubo virginianus colectadas entre 2015 y 2016. Los ensambles estuvieron compuestos por al menos 10 especies de roedores, un marsupial y un quiróptero (N = 612). La mayor abu...
Integration of the world's natural history collections can provide a resource for decision-makers.
Over the past three centuries, people have collected objects and specimens and placed them in natural history museums throughout the world. Taken as a whole, this global collection is the physical basis for our understanding of the natural world and our place in it, an unparalleled source of information that is directly relevant to issues as divers...
Se da a conocer la conformación de los ensambles de micromamíferos no voladores para cinco secuencias paleontológicas del Holoceno ubicadas en la cuenca del río Chubut. Con la información obtenida se propone una hipótesis ambiental para los últimos miles de años en Patagonia central. Se realizaron 13 dataciones radiocarbónicas con métodos convencio...
An updated checklist for living American marsupial species (orders Didelphimorphia, Microbiotheria, and Paucituberculata) is presented here. It includes 22 genera and 137 species, a figure slightly larger than previous, recent compilations. For each species, a reference to its type locality and a brief description of its overall distribution are in...
Salinomys delicatus Braun & Mares, 1995 is a sigmodontine rodent endemic to perisaline environments
in west-central Argentina. It is currently considered to be a Vulnerable species due to its patchy distribution and
the loss of optimal habitats caused by intensive anthropogenic activities. In this work, we document the first record for this species...
Salinomys delicatus Braun & Mares, 1995 is a sigmodontine rodent endemic to perisaline environments in west-central Argentina. It is currently considered to be a Vulnerable species due to its patchy distribution and the loss of optimal habitats caused by intensive anthropogenic activities. In this work, we document the first record for this species...
Dental microwear analysis is the study of enamel marks produced by ingested elements, allowing dietary inference in fossil groups. To generate these extrapolations, it is necessary to study reference specimens from biological collections. Observations on teeth of specimens treated with hydrogen peroxide (H 2 O 2) and/or sodium hypoclorite (naClO),...
The key role of the skull in food intake and processing implicates its morphology should be to some extent adapted to the functional demands present in different diets, while also showing similarities between those which are closely related. Sigmodontine rodents, with a generalist body plan and broad dietary habits, are an interesting case study to...
The genus Andalgalomys Williams and Mares, 1978 includes three species of small phyllotine rodents: Andalgalomys olrogi Williams and Mares, 1978; Andalgalomys pearsoni (Myers, 1977); and Andalgalomys roigi Mares and Braun, 1996. These mice are distributed from southeastern Bolivia and western Paraguay to west-central Argentina, occupying mostly sem...
Ctenomys (tuco-tucos) is one of the most speciose genera of mammals, and the number of species that compose it continues to increase. Of the 65 species currently recognized for the genus, 15% have been described in the last 10 years. In this work, based on morphological and molecular evidence, we describe a new species of tuco-tuco for Central Arge...
South American subterranean rodents of the genus Ctenomys are among the most diverse mammals at the species level, integrating a monotypic family of recent origin. Contrasting with their general morphological conservatism, chromosome variability is very high. Also, molecular data showed a shallow genetic divergence within several species groups wit...
The genus Microcavia includes six species of terrestrial, medium-sized, living cavies that occupy arid to semiarid environments at both high and low elevations in western and southern South America. Among these, Microcavia shiptoni is one of the least known species, being recorded only at two isolated localities from northwestern Argentina. Genetic...
Oligoryzomys longicaudatus se distribuye por las laderas orientales y occidentales de los Andes en el extremo sur de Sudamérica. En el sur de Argentina presenta una distribución relativamente bien conocida, pero hacia el norte, en coincidencia con la existencia de poblaciones aparentemente discontinuas, sus límites geográficos no están bien estable...
Aim
Mountains cover approximately 22% of the planet's terrestrial surface and have dramatic effects on climate and biodiversity. The rain shadow effect is a common feature on mountain ranges worldwide and its effects on ecology and evolution of species, particularly morphology, are incompletely known. Our aim is to identify the correlates that best...
Global conservation of biodiversity is more important than ever before. The success of the Convention on Biological Diversity’s Post-2020 Global Biodiversity Framework and monitoring strategy will depend on the availability of reliable, information-rich biodiversity data. Natural science collections throughout the world are repositories for and ste...
New World marsupials belong to three different orders: Didelphimorphia, Microbiotheria, and Paucituberculata. Didelphimorphia is one of the most speciose and successful radiations of recent Neotropical mammals, while Microbiotheria and Paucituberculata were more diverse during the Tertiary and are considered relictual elements in modern faunas. Phy...
Information from diversity inventories was used to study patterns of biodiversity and species distribution, to identify potential priority areas for conservation, and to guide future sampling efforts. In this context, we compiled information on non‐volant small mammal communities from the high Andes (>2000 m). Here, we present an open source datase...
RED LIST ASSESSMENT OF THE MAMMALS OF ARGENTINA 2019: SUMMARY AND ANALYSIS OF THREATS. Assessing the extinction risk of species has become an important decision tool for the implementation of species conservation policies. In this work we summarize the result of the latest oficial categorization of the mammals of Argentina with emphasis on the thre...
Félix de Azara describió varias especies de murciélagos en su trabajo seminal sobre los mamíferos del Paraguay en 1801. Uno de estos murciélagos, el chauve-souris septième o chauve-souris brun-blanchâtre fue utilizado por É. Geoffroy St-Hilaire (1806) para describir Vesp[ertilio]. villosissimus, un nombre que se aplica actualmente al murciélago esc...
En 2021, Jayat et al. propusimos una nueva especie de roedor sigmodontino, nombrada Phyllotis pehuenche, para las poblaciones del complejo de especies de Phyllotis xanthopygus del sudoeste de la provincia de Mendoza y el oeste de la provincia de Neuquén, Argentina. La descripción formal de la especie, publicada en un material suplementario electrón...
Tympanoctomys incluye cuatro especies vivientes endémicas de regiones áridas y semiáridas, mayormente restringidas al centro–oeste y centro–sur de Argentina. Para el Noroeste Argentino se ha mencionado a T. loschalchalerosorum y T. aureus, conocidas solo para sus localidades tipo y alrededores, en las provincias de La Rioja y Catamarca, respectivam...
As currently understood, the subgenus Abrothrix (Angelomys) Teta et al. (33:153–182, 2017) includes four species of small (< 25 g), short-tailed mice (< 65% of the length of the head plus body), widely distributed from southern Peru to southernmost Argentina and Chile. At least four nominal forms of this subgenus (i.e., canescens Waterhouse 2:109–2...
Based on previously published molecular (mitochondrial) and herein provided morphological (qualitative and quantitative data) evidence, we describe a new species of leaf-eared mouse of the genus Phyllotis. The new species is morphometrically distinct when compared with other phylogenetically or geographically close species of Phyllotis, showing sev...
Optimising conservation efforts requires an accurate record of the extant species as well as their geographic distributions. Nevertheless, most current conservation strategies start from an incomplete biodiversity inventory. Argentina has an extraordinary diversity of species, however, until now an updated inventory of its fauna has not been carrie...
Rodents are an important component of South America fauna. Their high diversity has motivated researchers to continually review their taxonomy, genetic diversity, species limits, and phylogenetic relationships. We apply DNA‐barcodes for assessing the taxonomic and genetic diversity in the two major lineages of South American rodents: caviomorphs an...
Un inventario biológico enumera, ordena, cataloga y/o cuantifica ecorregiones, ecosistemas o especies. Es una herramienta básica y fundamental de gestión ambiental, que, al mismo tiempo, constituye la primera medida de conservación, dado que no se puede cuidar aquello que es ignorado.
El presente Inventario Biológico Argentino es el esfuerzo de un...
Based on qualitative and quantitative morphological evidence, we describe a new species of Microcavia (Rodentia, Caviidae). The new species is characterized by a unique combination of morphological traits, that distinguished it from all others within the genus (i. e., upper incisors moderately proodont; palatal crest low, narrow anteriorly and expa...
The genus Dasyprocta Illiger, 1811 includes at least 13 species of medium-sized caviomorph rodents, widely distributed from Mexico to northern Argentina. Despite being abundant, largely diurnal, and easily identifiable by their external traits, the taxonomy of this genus remains poorly understood. In this work, we reviewed the taxonomy of Dasyproct...
Muroid rodents are the most species-rich superfamily of rodents occurring in Argentina. Increased fieldwork with these mammals depicts the need of adequate keys to identify species on the base of external characters. In this contribution we provide three keys (one for families and subfamilies, and another two for Sigmodontinae and Muridae, respecti...
Phyllotis Waterhouse 1837 is one of the most studied genera of South American cricetid rodents. As currently understood, it includes 20 small to medium-sized species of predominantly rocky habitats. Among them, populations of the yellow-rumped leaf-eared
mouse, traditionally referred to P. xanthopygus (Waterhouse 1837), are the most widely distribu...
Northwestern Argentina (NWA) is a region characterized by a complex geomorphology, and encompasses six ecoregions in a relatively small area. The environmental heterogeneity of NWA and the sensitivity of small mammals towards environmental and landscape changes constitute a good scenario to assess the factors that influence small mammal diversity p...
Information on dietary ecology plays a key role in a wide array of biological research and conservation decisions, but its availability is biased towards large and charismatic taxa, whereas small mammals are underrepresented. Of the scarce publications on the Neotropical sigmodontine rodents, most are concentrated in central-eastern Argentina and,...
Muroid rodents are the most species-rich superfamily of rodents occurring in Argentina. Increased fieldwork with these mammals depicts the need of adequate keys to identify species on the base of external characters. In this contribution we provide three keys (one for families and subfamilies, and another two for Sigmodontinae and Muridae, respecti...
