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Revista de Zoología
Revista Activa *
ISSN: 0188-1884
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Biología
Universidad Nacional Autónoma de México
México



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en: In this paper a study of the wealth of birds was done, for it there was a transect ran with 10 stations established every 100 m, abundance, relative frequency and alpha diversity was determined. There were recorded 32 species of birds , Families with most species were Parulidae and Turdidae which were recorded, the most abundant species are phaeonotus J. and C. rubra. The diversity recorded for all samples was high with 0.89. Of the species recorded 43.75% corresponds to an area of induced pasture area used for farming, livestock area, forest area and a creek. 25% of the species were unique to some area. According to the cumulative frequency species it indicated that more samples are still missing to reach the asymptote, which involves finding more subsequent studies bird records.>>>
Tizoc Adrián Altamirano Alvarez
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Dora Alicia González-Alvarado
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Marisela Soriano Sarabia
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en: With this study were determined and evaluated levels (C9 to C34) Polycyclic aromatic hydrocarbons Naphthalene to coronene-families of PAHs with increasing number of aromatic rings found in the atmospheric aerosol according to their size distribution in fine respirable particles, which were collected at high volume samplers type waterfall. The linear hydrocarbons collected during one year, presented collected aero particles concentrations in a ranging between 90,000 and 105,000 mg / g, the total PAH concentration was found in a ranging that goes from 50.000 to 75.000 mg / g In an 80% the concentrations of hydrocarbons presents significant differences between treatments. The results suggest not only a marker of air pollution indicator but several markers considering the evaluations of chrysene, benzo (b) fluoranthene, benzo (a) fluoranthene, benzo (k) fluoranthene, benzo (a) anthracene and benzo (a) pyrene.>>>
Sergio Rosales Ledezma
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Gilberto Díaz González
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Agustín Muhlia Velázquez
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Amando Leyva Contreras
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en: Through analysis of stomach contents, we studied trophic relationships of the five fish species found in the Macua reservoir in spring 2010. The species were classified using the Simpson index: Carassius auratus and Oreochromis aureus are presented as generalist phytoplanktophagous, Cyprinus carpio resulted to be euriphagous, although with a phytoplanktophagous tendency, Menidia jordani presented a generalist zooplanktophagous tendency and Ctenopharyngodon idella was defined as a very specialist herbivorous. The consumption of phytoplankton is essential in the feeding of the reported species in the Macua reservoir, also important is the zooplankton, being the principal genders Daphnia, Mastigodiaptomus and Moina. Species were classified by grouping them according to Renkonen's similarity coefficient.>>>
Alejandra Verde Medina
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Leonardo Téllez Mateos
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Norma Angélica Navarrete Salgado
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Jessica Mariela González Solís
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Guillermo Elías Fernández
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Denisse Esmeralda Hernández González
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en: It is seen between the months of February to May 1999, the distribution and types of microhabitats in which the life cycle of the species Sceloporus grammicus develops within the UNAM Iztacala Campus develops. It was found that the spatial distribution of these organisms is of uniform type and stacked according to microhabitats where they were found. With regard to the comparison of body weight, SVL (snout-vent length) and body mass males always showed higher values than females.>>>
Tizoc Adrián Altamirano Álvarez
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Karen Keer García
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Marisela Soriano Sarabia
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