Browsing Artículos de revistas by Issue Date
Now showing items 1-20 of 172
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Description of a remarkable new species of ant in the genus Daceton Perty (Formicidae: Dacetini) from South America
(Zootaxa, 2010-10-02)Una nueva especie de hormiga en el género Daceton, el cual ha permanecido monotípico por 205 años, se describe de Brasil y Perú. La nueva specie, Daceton boltoni sp. nov., es similar a D. armigerum, pero difiere de ésta, ... -
Game Vertebrate Densities in Hunted and Nonhunted Forest Sites in Manu National Park, Peru
(Biotrópica, 2010-10-07)Manu National Park of southern Peru is one of the most renowned protected areas in the world, yet large-bodied vertebrate surveys conducted to date have been restricted to Cocha Cashu Biological Station, a research station ... -
A Revision of Pachacutia, a New Genus of Rare Andean Ithomiine Butterflies (Nymphalidae : Ithomiinae), with the Description of Two New Species
(Entomological Society of America, 2010-10-07)A newgenus, Pachacutian. gen., of large, rare Andean ithomiine butterßies is described and characterized, containing four species. Two species and their constituent subspecies and synonyms (Ithomia cleomella Hewitson, ... -
A New Genus for Aepeomys fuscatus Allen, 1912, and Oryzomys intectus Thomas, 1921 : Enigmatic Murid Rodents from Andean Cloud Forests
(American Museum Novitates, 2010-10-07)Dos especies nominales de roedores muridos neotropicales (subfamilia Sigmodontinae) quehabıán sido ubicadas durante mucho tiempo en géneros diferentes, se asignan a un nuevo género reconociendo sus diferencias con otros ... -
A framework for assessment and monitoring of small mammals in a lowland tropical forest
(Kluwer Academic Publishers, 2010-10-09)Abstract. Development projects in tropical forests can impact biodiversity. Assessment and monitoring programs based on the principles of adaptive management assist managers to identify and reduce such impacts. The small ... -
Ossified meniscus and cyamo-fabella in some fossil sloths a morpho-functional interpretation
(Geobios, 2010-10-09)Un esqueleto articulado de Thalassocnus natans (Xenarthra: Nothrotheriidae), así como la revisión de varios otros restos de perezosos fósiles, dan nueva información acerca de los sesamoides ubicados en la articulación de ... -
Osteology of Icadyptes salasi, a giant penguin from the Eocene of Peru
(Anatomical Society of Great Britain and Ireland, 2010-10-11)We present the first detailed description of the giant Eocene penguin Icadyptes salasi. The species is characterized by a narrow skull with a hyper-elongate spear-like beak, a robust cervical column and a powerful flipper. ... -
Fishes of three bolivian rivers: diversity, distribution and conservation
(Asociación Interciencia, 2010-10-11)The forested lowlands of most Amazonian tributaries remain poorly explored. Lists of freshwater fishes do not exist for more than one or two of the major arms of the Amazon, a feature that was prominently absent from an ... -
Isolation of Cytotoxic Metabolites from Targeted Peruvian Amazonian Medicinal Plants
(American Chemical Society and American Society of Pharmacognosy, 2010-10-11)The antiproliferative bioassay-guided fractionation of five Peruvian plants, Doliocarpus dentatus, Picramnia sellowii, Strychnos mitscherlichii, Iryanthera juruensis, and Croton alnifolius, led to the isolation and identification ... -
Contrasting patterns of elevational zonation for birds and mammals in the Andes of southeastern Peru
(Journal of Biogeography, 2010-10-11)To determine the generality of avian diversity patterns, we investigated patterns of elevational zonation shown by birds and mammals along the eastern slope of the Andes Mountains in southeastern Peru. The strong environmental ... -
A new species of thomasomys (muridae: sigmodontinae) from the andes of southeastern peru
(Journal of Mammalogy, 2010-10-12)We describe a new species of Thomasomys from the Vilcabamba Cordillera, Cuzco, Peru. This thomasomyine is a medium-sized, small-eared, and long-tailed rodent similar in external and cranial features to Thomasomys silvestris, ... -
The giant bite of a new raptorial sperm whale from the Miocene epoch of Peru
(Nature, 2010-10-13)The modern giant sperm whale Physetermacrocephalus, one of the largest known predators, preys upon cephalopods at great depths1,2 . Lacking a functional upper dentition, it relies on suction for catching its prey3 ; in ... -
Corydoras ortegai, a new species of corydoradine catfish from the lower río Putumayo in Peru (Ostariophysi: Siluriformes: Callichthyidae)
(Sociedade Brasileira de Ictiologia, 2010-10-13)A new species of Corydoras, C. ortegai, is described from tributaries of the lower course of río Putumayo in Peru, close to the border with Brazil and Colombia. The new species seems to be related to Corydoras reynoldsi, ... -
Phylogenetics of Coenonymphina (Nymphalidae: Satyrinae) and the problema of rooting rapid radiations
(Molecular Phylogenetics and Evolution, 2010-10-13)We report a rapid radiation of a group of butterflies within the family Nymphalidae and examine some aspects of popular analytical methods in dealing with rapid radiations.We attempted to infer the phylogeny of butterflies ... -
The youngest species of the Aquatic Sloth Thalassocnus and a reassessment of the relationships of the Nothrothere Sloths (Mammalia: Xenarthra)
(Society of Vertebrate Paleontology, 2010-10-13)Two new specimens of the aquatic sloth Thalassocnus from the Pliocene of Peru are described, one of T. carolomartini McDonald and Muizon, 2002 and the other T. yaucensis, sp. nov. Comparisons with the type species of ... -
Ramphastosula (Aves, Sulidae): a new genus from the Early Pliocene of the Pisco Formation, Peru
(Society of Vertebrate Paleontology, 2010-10-13)Se describe material craneal de un nuevo género (Ramphastosula) para la familia Sulidae, proveniente del Plioceno temprano de la Formación Pisco (costa centro-sur del Perú). El material se caracteriza por presentar (1) un ... -
Revising the recent evolutionary history of equids using ancient DNA
(Proceedings of the National Academy of Sciences of the United States of America (PNAS), 2010-10-15)The rich fossil record of the family Equidae (Mammalia: Perissodactyla) over the past 55 MY has made it an icon for the patterns and processes of macroevolution. Despite this, many aspects of equid phylogenetic relationships ... -
Amber from western Amazonia reveals Neotropical diversity during the middle Miocene
(Proceedings of the National Academy of Sciences of the United States of America (PNAS), 2010-10-15)Tertiary insects and arachnids have been virtually unknown from the vast western Amazonian basin. We report here the discovery of amber from this region containing a diverse fossil arthropod fauna (13 hexapod families and ... -
Stability or stasis in the names of organisms: the evolving codes of nomenclature
(The Royal Society, 2010-10-15)Nomenclature, far from being a dry dusty subject, is today more relevant than ever before. Researchers into genomics are discovering again the need for systems of nomenclature—names are what we use to communicate about ... -
Exceptional occurrence of fossil baleen in shallow marine sediments of the Neogene Pisco Formation, Southern Peru
(Palaeogeography, Palaeoclimatology, Palaeoecology, 2010-10-15)Fossil baleen is rare in the sedimentary record. This paper documents the exceptional occurrence of thirty seven fossil whale specimens with preserved baleen in the Neogene Pisco Formation during a transect survey in a ...
