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| Format: | Artículo científico |
| Language: | es |
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Universidad de Costa Rica
2016
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44947539005 https://www.redalyc.org/journal/449/44947539005/ https://www.redalyc.org/journal/449/44947539005/html/ https://www.redalyc.org/journal/449/44947539005/44947539005.epub https://www.redalyc.org/journal/449/44947539005/movil |
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Table of Contents:
- Ecología poblacional de Heteromys pictus (Rodentia: Heteromyidae), en un bosque tropical caducifolio con perturbación humana, en la costa de Oaxaca, México Miguel Briones-Salas Graciela González Biología Cpture Liomys recapture disturbance populations Spiny pocket mice Liomys and Heteromys are forest-dwelling granivorous rodents distributed in seasonally dry forest or thorn scrub along the Pacific lowlands or xeric regions in the Mexican Plateau. We analyzed the population dynamics of the spiny pocket mouse Heteromys pictus, in the coast of Oaxaca, Mexico, in two sites of tropical deciduous forest with different degrees of disturbance: ZPP = less disturbed site, and ZMP = more disturbed site. Two plots were established in each area with 66 trap stations; we used the capture-recapture method and trapping for 12 periods for one year. Population density was estimated using the method of Minimum Number of Individuals Known Alive (MNKA). We captured 706 individuals, 290 for the ZPP and 416 for the ZMP. The population density ranged from 28 to 142 ind./ ha for both zones, but it was higher for the ZMP (54 against 142 ind./ha). The population density for both areas increased during the rainy season and coincided with the increased recruitment of adults. Reproductive activity occurred throughout the study period in both areas, but it was higher for the ZMP. The sex ratio in the ZPP was 1:1 while in the ZMP was 1:0.75. In the ZMP we found a higher population density and reproductive activity in females, compared to the ZPP. These results suggest that H. pictus prefers the ZMP, indicating that the species is not significantly affected by human disturbance in the studied location. Rev. Biol. Trop. 64 (4): 1415-1429. Epub 2016 December 01. 2016 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44947539005 https://www.redalyc.org/journal/449/44947539005/ https://www.redalyc.org/journal/449/44947539005/html/ https://www.redalyc.org/journal/449/44947539005/44947539005.epub https://www.redalyc.org/journal/449/44947539005/movil es http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.4 Vol.64