Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Reguera, S., Zamora-Camacho, F. J., Trenzado, C. E., Sanz, A., & Moreno-Rueda, G. (2014). Oxidative stress decreases with elevation in the lizard psammodromus algirus. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 172, 52–56. Added by: Sarina (2014-12-28 09:43:03) |
| Resource type: Journal Article DOI: http://dx.doi.org/10.1016/j.cbpa.2014.02.018 ID no. (ISBN etc.): 1095-6433 BibTeX citation key: Reguera2014b View all bibliographic details  |
Categories: Englisch = English Keywords: Echsen = Lizards, Sonne = Sun, Ultraviolett = Ultraviolet Creators: Moreno-Rueda, Reguera, Sanz, Trenzado, Zamora-Camacho Collection: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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| Abstract |
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Abstract Oxidative stress is considered one of the main ecological and evolutionary forces. Several environmental stressors vary geographically and thus organisms inhabiting different sites face different oxidant environments. Nevertheless, there is scarce information about how oxidative damage and antioxidant defences vary geographically in animals. Here we study how oxidative stress varies from lowlands (300–700 m asl) to highlands (2200–2500 m asl) in the lizard Psammodromus algirus. To accomplish this, antioxidant enzymatic activity (catalase, superoxide dismutase, glutathione peroxidase, glutathione reductase, glutathione transferase, DT-diaphorase) and lipid peroxidation were assayed in tissue samples from the lizards' tail. Lipid peroxidation was higher in individuals from lowlands than from highlands, indicating higher oxidative stress in lowland lizards. These results suggest that environmental conditions are less oxidant at high elevations with respect to low ones. Therefore, our study shows that oxidative stress varies geographically, which should have important consequences for our understanding of geographic variation in physiology and life-history of organisms.
Added by: Sarina |