Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

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The objective of this study is to present progress on management and conservation of with tailed-deer (Odocoileus virginianus) at the Mixteca poblana; an ethnic region whit 47 municipalities and 10,565.7 km2, whit semiarid and arid climates, rangeland slopes with tropical dry forest and xerophytes shrubs, where the Mexican subspecie of white-tailed deer mexicanus is distributed in 547,500 ha which represents 51.8% of the region The conservation and management of the deer is carried under the technological model denominated diversified livestock, a silvopastoril system which combines the intensive production of bovine meat, with the sustainable use of deer and other wildlife species and their habitat, by hunting and ecotourism in Units for the Management and Wildlife Conservation (UMAs). Under this management, there are 72 UMAs in 35 municipalities whit 82,522 ha in the region. The mexicanus subspecie is considerate as a hunt trophy by the Safari Club International. In the hunting season 2009-2010, 32 UMAs harvested 152 game permissions; 20 of those UMAs are located in Chiautla County. The deer is fed with 139 species of plants, mainly 40 herbs and 36 shrubs; the population density varies from 12.8 to 45.45 ha/deer. The environmental benefits from deer management and their habitat have resulted in environmental services such as conservation of soil, water and biodiversity. The socioeconomic benefits include increments in rate of incomes and regional employment, as well as conservation of cultural traditions. Actually in the region are involved three group of researchers, three Non Governmental Organization and seven and technical advisors.

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 Choeroniscus godmani, and the order Carnivora was the most diverse, with 12 species. The three types of vegetation in the area and an ecotone between two of them show little similarity in species composition, this can explain the high species richness of the region.

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 bear, sloth bear and sun bear). The phylogenetic relationship of some of the bear species is not well known and it may change with the development of new molecular markers, then, the controversies that surround the family of bears could be resolved. Also, literature shows variation in the genetic diversity values reported for the ursids due to the degree of fragmentation; however, the variation is also related to the molecular technique used.

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We report the existence of the Texas antelope squirrel Ammospermophilus interpres in the Sierra Juárez, municipality of Juárez in the state of Chihuahua, México. This represents the northernmost record in the state of Chihuahua, Mexico. It represents a range extension of 365 kilometers northwest from its previews records.

In the Natural Protected Corridor Chichinautzin (CBCH) there are issues such as hunting, deforestation, expansion of the agricultural frontier, urbanization and poor planning in natural resource management. The management of deer species has been shown to have great potential to promote conservation and sustainable use of the ecosystem of which they form part of. Before proposing a management strategy for white-tailed deer in the CBCH, it is necessary to consider the basic characteristics of the species distribution in the area, obtain reliable data on their population density and set policies consistent with management information obtained. This study is an important contribution to the knowledge of the species in temperate forests of the state of Morelos, since there was no record of habitat use and population density. Population density was obtained within the scope of 2.74 ± 3.62 deer/km2 in the town of the San Juan Tlacotenco and 2.71 ± 2.07 deer/km2 in the Huexcalapa volcano, wich is considered low relative to other investigations with the same species in the same type of habitat. On the other hand, in terms of habitat selection, white-tailed deer preferred the pine-oak forest and cloud forest. The low density of white-tailed deer appears to be related to a set of factors such as land use change, poaching and habitat availability.

Large mammals have important roles in the dynamics of Neotropical rainforests. However, their ecology has barely been studied in the forests and tropical forest of southern Mexico. In the present study, we assessed the relative abundance in populations of Baird´s tapir Tapirus bairdii, white-tailed deer Odocoileus virginianus, and collared peccary Pecari tajacu, along 246.4 km of linear transects in the buffer area of “La Sepultura” Biosphere Reserve (REBISE), Chiapas, Mexico. We observed 0.998, 0.694 and 0.215 tracks/km of Baird´s tapir white-tailed deer and collared peccary respectively. The present study shows that the La Sepultura Biosphere Reserve, plays an important role for conservation of mastofauna of the area as a refuge in an environment with anthropogenic influence.

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