We analyzed the stomach contents of five species of sigmodontine rodents: Akodon orophilus, Microryzomys altissimus, M. minutus, Thomasomys notatus, and T. kalinowskii, from mountain forests of Huánuco, Perú (2564 - 3850 m). We found that A. orophilusis an insectivorous species because the high volume of arthropods (adults and larvae) in the stomach contents (90.1%); T. notatusand T. kalinowskiiare primarily herbivorous because they had a high volume of plant material of 89% and 67.75% respectively; whereas M. altissimusand M. minutusare omnivorous because they presented similar volume percentages for plants and arthropods. T. kalinowskiiis considered a generalist species because it had the highest niche breadth (4.61), whereas A. orophilusis considered a specialist because it had the lowest value (1.70). Akodon orophilusregistered a low coefficient of variation (CV= 20%) showing a pre...

Se analizó el contenido estomacal de cinco especies de roedores sigmodontinos: Akodon orophilus, Microry-zomys altissimus, M. minutus, Thomasomys notatus yT. kalinowskii, procedentes de los bosques montanos de Huánuco, Perú (2564 - 3850 m de altitud). Concluimos que A. orophiluses insectívora por haber presentado un alto volumen de artrópodos (adultos y larvas) en el contenido estomacal (90,1%); mientras que T. notatusy T. kalinowskiison principalmente herbívoras por el alto volumen de materia vegetal, 89% y 67,75% respectiva-mente; y que M. altissimusy M. minutusson omnívoras por presentar volúmenes similares tanto para vegetales como para artrópodos. Thomasomys kalinowskiies considerada generalista por la mayor amplitud de nicho (4,61), mientras A. orophiluses considerada especialista por el menor valor (1,70). Akodon orophilusmostró una preferencia por el consumo de artrópo...

Despite the high diversity of the well-known mammals of Peru, there are few studies in the central yungas, which does not allow an adequate knowledge of their diversity. Here we present the results of an evaluation of mammal diversity of Carpish, Huanuco, a montane forest in a critical state of conservation. The study was carried out between 2001 and 2002 with five expeditions in the localities of Carpish de Mayobamba (2730 – 3080 m) and San Pedro de Carpish (1780 – 2400 m). We used capture methods, sightings and interviews, which represent an effort of 28 500 trap-nights and 190 net-nights. We recorded 35 species of mammals in the study area. The most diverse orders were bats and rodents (74.3%); these include four endemic species for the country, four species in some conservation category and the first record of the gracile opossum Gracilinanus aceramarcae for Huánuco. Species ric...

Despite the high diversity of the well-known mammals of Peru, there are few studies in the central yungas, which does not allow an adequate knowledge of their diversity. Here we present the results of an evaluation of mammal diversity of Carpish, Huanuco, a montane forest in a critical state of conservation. The study was carried out between 2001 and 2002 with five expeditions in the localities of Carpish de Mayobamba (2730 – 3080 m) and San Pedro de Carpish (1780 – 2400 m). We used capture methods, sightings and interviews, which represent an effort of 28 500 trap-nights and 190 net-nights. We recorded 35 species of mammals in the study area. The most diverse orders were bats and rodents (74.3%); these include four endemic species for the country, four species in some conservation category and the first record of the gracile opossum Gracilinanus aceramarcae for Huánuco. Species ric...

The present work documents the diversity of mammals in the headwaters of the Apurímac river, one of the most important information gaps in Peru, based on an evaluation of fi ve sampling areas in the departments of Apurímac (Cconoc, Velavelayoc), Ayacucho (Yanamonte, Ccentabamba) and Cuzco (Catarata). Capture’s effort was 1280 trap-nights and 41 mistnet-nights. Sixty species were recorded in the study area and included 15 threatened species and four species endemic to Perú. As expected, bats and rodents were the most diverse orders (66,7 %). The species diversity in the sites sampled declines signifi cantly with elevation from the lowest elevation sites (Ccentabamba and Catarata) to the highest (Velavelayoc). The marsupial Monodelphis peruviana and the Dwarf Brocket deer Mazama chunyi are fifi rst records for the department of Ayacucho. The bats Artibeus planirostris and Myotis keays...

The Guía de identificación de fauna silvestre para las autoridades ambientales de Amazonas, San Martín, Loreto y Ucayali (ISBN: 978-612-4261-24-4) was published in order to provide a tool for authorities related to the fight against wildlife trafficking and trade.This guide represents an important tool, so the information transmitted should be as current and reliable as possible. However, after reviewing the section dedicated to mammals, we identified several errors that could generate confusion and be counterproductive in the fight against wildlife trafficking. Although we emphasize the importance of this work, we suggest caution in the preparation of documents such as this guide in order to maximize its usefulness for the authorities that fight wildlife trafficking in our territory.

El presente trabajo documenta la diversidad de los mamíferos de la cuenca del río Apurímac, uno de los vacíos de información más importantes del Perú, en base a una evaluación de cinco lugares de muestreo en los departamentos de Apurímac (Cconoc, Velavelayoc), Ayacucho (Yanamonte, Ccentabamba) y Cusco (Catarata). El esfuerzo de captura fue de 1280 trampas noche y 41 redes noche. Se registraron 60 especies en el área de estudio; incluyendo 15 especies bajo alguna categoría de conservación y cuatro endémicas a nivel del país. Como era de esperarse, los murciélagos y los roedores fueron los órdenes más diversos (66,7 %). La diversidad de especies en los sitios de muestreo decrece signifi cativamente con la elevación desde los puntos de muestreo más bajos (Ccentabamba y Catarata) hasta el más alto (Velavelayoc). El marsupial Monodelphis peruviana y el venado enano Mazama ...

Con la finalidad de brindar una herramienta para autoridades vinculadas a la lucha contra el tráfico ilegal de fauna silvestre se publicó la Guía de identificación de fauna silvestre para las autoridades ambientales de Amazonas, San Martín, Loreto y Ucayali (ISBN: 978-612-4261-24-4). Esta guía representa una herramienta importante por lo cual la información transmitida debe ser lo más actual y fidedigna posible. Sin embargo, después de revisar la sección dedicada a mamíferos, identificamos diversos errores que podrían generar confusión y ser contraproducentes en la lucha contra el tráfico ilegal de vida silvestre. Aunque resaltamos la importancia de este trabajo, sugerimos precaución en la elaboración de documentos como esta guía con la finalidad de maximizar su utilidad para las autoridades que combaten tráfico de fauna en nuestro territorio.