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Universidad Autónoma Metropolitana (UAM) 2010

EVALUACION DEL EFECTO DE LA CONTAMINACION ATMOSFERICA EN DOS ESPECIES DEL GENERO PEROMYSCUS (RODENTIA : MURIDAE) QUE COHABITAN EN EL PARQUE NACIONAL DESIERTO DE LOS LEONES

MOISES ANDRADE HERRERA

Titre : EVALUACION DEL EFECTO DE LA CONTAMINACION ATMOSFERICA EN DOS ESPECIES DEL GENERO PEROMYSCUS (RODENTIA : MURIDAE) QUE COHABITAN EN EL PARQUE NACIONAL DESIERTO DE LOS LEONES.

Auteur : MOISES ANDRADE HERRERA

Université de soutenance : Universidad Autónoma Metropolitana (UAM)

Grade : MAESTRIA EN BIOLOGIA 2010

Résumé
Air pollution in the Mexico City Basin is a problem that affects ecosystems, including populations of mice living in surrounding forests. Because of this, in this study, we documented the physiological effects caused by environmental pollutants (CA) on two species of Peromyscus, cohabiting National Park Desierto de los Leones (PNDL) to determine whether they can serve as biomarkers of damage by CA. Based on the use of biomarkers (AChE, BuChE, CAT and GST) in plasma, liver and skeletal muscle, we compared the activity between species and sexes, in different climatic seasons. Biomarkers indicate that both species show a similar pattern throughout the year, found an inhibition to the year’s dry season, coinciding with the frequency of inversions, because of these similarities in the expression of biomarkers, both could serve one time as an effective biomarker. However, when compared without considering the temporal variation is reflected by the differences that prevail among them, in particular the size seems to play an important role in the assimilation of xenobiotic agents and that P. melanotis, a species with higher metabolic rate, has a high activity biomarkers. Males and females showed no significant differences in the activity of any of the markers, so this distinction does not seem to be a relevant factor for the election of a biomarker. This work is the first study in the PNDL using these tools and makes it clear that there is an effect in organisms due to exposure to CA. We recommend continue with studies to clarify what pollutants and how they affect wildlife species that inhabit this park.

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