In this paper we present an inventory of mammals from the region of Nizanda, Juchitán, Oaxaca. The field work was made from April 2007 to February 2008. A total of 7 orders, 17 families and 40 species were recorded. Ten of the collected species are included in some risk category according to national and international standards. The most abundant species was the bat...
The diet of the endangered Tehuantepec jackrabbit, Lepus flavigularis, was studied during the dry and rainy seasons in 2007, in a lowland area in the southeastern Oaxaca, Mexico. Faecal pellets of L. flavigularis were collected at regular intervals from four selected sites. Microhistological techniques were employed to analyze the pellets. The epidermal fragments were identified...
The taxonomic relationships among the eight extant species of the Ursidae family are not well known; however, molecular genetics markers has consistently shown three major clades: the line that leads to the giant panda, the line that leads to the spectacled bear, and a polytomy lineage that results in six other species (American black bear, Asiatic black bear, polar bear, brown...
The Northern Pygmy Mouse (Baiomys taylori) occurs throughout much of Mexico and into the southwestern United States, with its range currently expanding northward in the U.S. Despite documentation of species range expansion, there have been very few studies that have monitored population growth patterns in this species. During a 16-month mark-recapture study in coastal...
Jalisco is one of the states in Mexico that has received more attention by mammalogists and these studies have covered varied topics, one of them are the inventories that have increased our knowledge about states mammal diversity and conservation. After of mammal checklist publications, there have been many taxonomic changes that modify the known inventories of Jalisco. We...
The black bear is an endangered species in Mexico, like the majority of the large carnivores they are distributed in small and isolated populations and thus their conservation depends on understanding their population status. During 2009, we estimated the abundance and density of the black bear in Sierra de Ajos and Sierra de San Luis in the Northeast Sonora, using camera traps...
The lesser long nosed bat Leptonycteris yerbabuenae (Phyllostomidae: Glossophaginae), is a migratory species highly specialized for nectar and pollen consumption. Although they can consume fruits of columnar cactus (Family Cactaceae, tribes Pachicereeae and Cereeae), this habit has not been studied sufficiently to know the importance of this frugivory. Available information shows...
In Oaxaca there are several areas with forest management, the Capulalpam de Mendez, District of Ixtlán is one of them. This economic activity can affect mammals diversity directly. An evaluation was carried out by transecting this richness in two areas, one preserved and another in forest management. We obtained a list of medium and large mammals in these two areas, where the...
This research reports the inventory of mammals of Municipio de Cosoltepec, Oaxaca, México, which is located in the northern part of the Huajuapan District in Sierra Mixteca, near the border on the state of Puebla. Field work was made during August 200 - September 2007 using Sherman, Museum Special and Tomahawk traps, mist nets and one camera-trap; mammals also were recorded...
A preliminary list of mammal species of shade coffee plantations in the Copalita River basin, Oaxaca, is presented. Fifty two species are here reported, representing seven orders and seventeen families. Twenty seven species are new records for the area. Five species listed by the Norma Oficial Mexicana NOM-059-SEMARNAT-2010 are present.
With the bat diversity from the state of Oaxaca being so vast, it is necessary to update species inventories and to know in depth the current level of research information on this group. We analyzed both, published and unpublished sources related to bat species from the state with the main goal of enhancing the knowledge on bats from Oaxaca. The bat fauna for Oaxaca consists of...
Nests are described for Thomasomys aureus and T. paramorum in a high Andean forest in northern Ecuador. Nests of T. aureus were found in the tree canopy to 6 and 7 m in height andthose for T. paramorum were located under the roots from 15 cm to 1.5 m above the surface.
Updated information on the geographic and taxonomic representativeness of mammal specimens deposited in 28 Mexican mammal collections, the Mammal Networked Information System (MaNIS), and the Unidad de Informática para la Biodiversidad (UNIBIO) data bases were compiled in order to analyze and compare the overall current status of the specimens of Mexican mammals deposited in...
Mexican lagomorphs (15 species) represent part of Mexico's natural heritage which invoke contrasting perceptions. On the one side, some species are granted as threatening of ecological disturbances due to its versatility and adaptation to man-made changes. On the other, a number of species are highly threatened and some at the verge of extinction. The present paper analyses...
At this time there is no hypothesis of kinship in Mexican hares based on a comparison of the molariform tooth enamel, which represent valuable of information for systematic purposes, used to describe fossil and extant species. We describe the patterns of the enamel of five species of hares using the second and third upper premolars and third lower premolar. The enamel pattern was...
The biological knowledge, current distribution and conservation status of the species of jackrabbits (Lepus) in risk category distributed in islands of Baja California Sur, Mexico is very useful to take specific actions for its management and conservation. The objective of this work was to spread recent results on the actual state that keep the populations from two species of...
This research assessed the degree of genetic divergence between Lepus insularis and L. californicus xanti from the Baja California Peninsula as a consequence of the geographical isolation of the former using allozymic analyses. Results were compared and contrasted with the similar biogeographical condition for the taxon pair L. c. sheldoni, from Carmen Island, and L. c...
It has been recognized the need for studies to determine the long-term viability of populations of endangered species, such as the Tehuantepec jackrabbit (Lepus flavigularis) populations. Currently the total population is estimated at less than 1000 individuals. We developed a viable population analysis to determine the extinction risk of the Tehuantepec jackrabbit population of...
The Tehuantepec jackrabbit (Lepus flavigularis) is an endemic species from southeastern Oaxaca, listed as "endangered" by Mexican law and IUCN Red List. It is closely linked to grassland ecosystems from the area. Currently, the risk is due to the intense fragmentation of habitat and poaching. In this study we determined the habitat use of the Tehuantepec jackrabbit in Santa Maria...
Izabal, Guatemala, is considered a high-risk region of bovine paralytic rabies and also has documented cases of common vampire bat attacks to humans in villages in marginal conditions. Measures to control vampire bat populations are commonly undertaken, however, when not properly supervised, they often ignore selective techniques and result in the killing of harmless species. In...
We report the presence of the bobcat (Lynx rufus) in the northeastern of the state of Hidalgo, in the municipality of San Felipe Orizatlán, at 156 meters of altitude. One individual male of L. rufus was run over in a dirty road and donated by local people. This record extends the distribution of this species in Hidalgo approximately 118 km to the southwest of previous records and...
White-tailed deer Odocoileus virginianus and collared peccary Pecari tajacu are the two native ungulates species present in the Bajo Balsas region. Both are very important from an ecological, social and economical perspective. Therefore, evaluate the effects of changes in land use on their distribution is basic for conservation and management proposes. In this paper we used the...
We analyzed the biogeographical patterns of diversity and endemicity of the Mexican mammals, into a quadrat between 15º 30' - 21º 00' N latitude and 94º 00' - 100º 00' W longitude, in order to identify the Oaxaca-Tehuacanense province as a natural area. We analyzed the records of 133 mammalian species in databases and we modeled their distributions. Using the potential...