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      Abundancia relativa y patrones de actividad de los mamíferos de los Chimalapas, Oaxaca, México Translated title: Relative abundance, and activity patterns of mammals at Chimalapa's forest, Oaxaca, Mexico

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          Abstract

          La selva de los Chimalapas al sureste de México, es una de las regiones prioritarias para la conservación. En esta región existen áreas de bosques y selvas en buen estado de conservación que no han sido exploradas anteriormente. El estudio de las poblaciones de mamíferos así como los análisis de abundancia relativa y patrones de actividad pueden ayudar a entender la estructura del ecosistema de esta región. Por medio del uso de cámaras trampa, se determinó la abundancia relativa así como los patrones de actividad de los mamíferos medianos y grandes en la región de los Chimalapas, en Oaxaca, México. Se realizaron dos periodos de muestreo fotográfico en la temporada seca de 2009 y la lluviosa de 2010 con un total de 54 cámaras trampas en cada periodo. Con un esfuerzo total de muestreo de 4,860 días-trampa, se lograron registrar 22 especies, 20 de mamíferos medianos y grandes y dos de aves. El 50% de las especies se encuentran dentro de alguna categoría de riesgo por las leyes nacionales e internacionales. Las especies más abundantes fueron Cuniculus paca, Tayassu pecari, Dasyprocta mexicana, Pecari tajacu, Tapirus bairdii y Dasypus novemcinctus, mientras que la menos abundante fue Urocyon cinereoargenteus. Se registraron tres tipos de patrones de actividad: Nocturno-Crepuscular; con 13 especies, Diurnos-Nocturno-Crepuscular (24 hr); tres especies, y Diurnos con cinco especies. Con esta información se pretende contribuir a la planeación del manejo y conservación de los mamíferos en esta importante región de México.

          Translated abstract

          The Chimalapa's Forest at the southeast of Mexico is one of the priority regions for conservation. There are preserved areas of tropical forests that have not been explored previously. The study of populations of mammals that live in this region, as well as the analysis of relative abundance and activity patterns can help us to understand the functioning of the ecosystem. Using the technique of camera- traps, we determine the relative abundance and activity patterns of medium and large mammals at Chimalapa's Forest, Oaxaca. There were two photographic sampling periods: the 2009 dry season and the 2010 rainy season using a total of 54 camera- traps in each period. The total effort was 4,860 trap-days; we recorded 22 species, 20 medium and large mammals, and two birds. The 50% of the species are included in a category of endangered by national and international laws. The most abundant species were Cuniculus paca, Tayassu pecari, Dasyprocta mexicana, Pecari tajacu, Tapirus bairdii and Dasypus novemcinctus, whereas the less abundant was Urocyon cinereoargenteus. There were three types of patterns of activity: Nocturnal-twilight; with 13 species, diurnal-nocturnal-twilight (24 hrs); three species, and five diurnal species. Our results are a contribution to the planning of the management and the conservation of the mammals at this important region of Mexico.

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          Most cited references67

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          Camera trap, line transect census and track surveys: a comparative evaluation

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            Differential Use of Trails by Forest Mammals and the Implications for Camera-Trap Studies: A Case Study from Belize

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              Habitat use, activity patterns and use of mineral licks by five species of ungulate in south-eastern Peru

              We studied the habitat use, activity patterns and use of mineral licks by five species of Amazonian ungulate using data from four 60-d camera trap surveys at two different sites in the lowland rain forest of Madre de Dios, Peru. Camera traps were set out in two regular grids with 40 and 43 camera stations covering an area of 50 and 65 km 2 , as well as at five mineral licks. Using occupancy analysis we tested the hypothesis that species are spatially separated. The results showed that the grey brocket deer ( Mazama gouazoubira ) occurred almost exclusively in terra firme forests, and that the white-lipped peccary ( Tayassu pecari ) used floodplain forest more frequently during some surveys. All other species showed no habitat preference and we did not find any spatial avoidance of species. The white-lipped peccary, the collared peccary ( Pecari tajacu ) as well as the grey brocket deer were strictly diurnal while the lowland tapir ( Tapirus terrestris ) was nocturnal. The red brocket deer ( Mazama americana ) was active day and night. The tapir was the species with the highest number of visits to mineral licks (average 52.8 visits per 100 d) followed by the white-lipped peccary (average 16.1 visits per 100 d) and the red brocket deer (average 17.1 visits per 100 d). The collared peccary was only recorded on three occasions and the grey brocket deer was never seen at a lick. Our results suggest that resource partitioning takes place mainly at the diet level and less at a spatial level; however, differences in small-scale habitat use are still possible.
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                Author and article information

                Journal
                azm
                Acta zoológica mexicana
                Acta Zool. Mex
                Instituto de Ecología A.C. (Xalapa, Veracruz, Mexico )
                0065-1737
                2448-8445
                December 2012
                : 28
                : 3
                : 566-585
                Affiliations
                [01] México D.F. orgnameUniversidad del Valle de México orgdiv1Escuela de Ciencias de la Salud orgdiv2Escuela de Medicina Veterinaria y Zootecnia ilira_12@ 123456hotmail.com
                [02] Oaxaca Oax orgnameInstituto Politécnico Nacional orgdiv1Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional mbriones@ 123456ipn.mx
                Article
                S0065-17372012000300006 S0065-1737(12)02800300006
                dfb6e201-0049-4527-95ae-aa3dd0c65b4a

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 20 September 2012
                : 02 May 2012
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 74, Pages: 20
                Product

                SciELO Mexico

                Categories
                Artículos originales

                mamíferos medianos y grandes,patrones de actividad,Activity schedules,camera traps,Santa Maria Chimalapa,Santa María Chimalapa,cámaras trampa,Bosque tropical perennifolio,medium and large mammals,tropical rain forest

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