Does the oxidative stress theory of aging explain longevity differences in birds? II. Antioxidant systems and oxidative damage
Magdalene K Montgomery, William A Buttemer, AJ Hulbert
Experimental Gerontology | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2012
The oxidative damage hypothesis of aging posits that the accumulation of oxidative damage is a determinant of an animal species' maximum lifespan potential (MLSP). Recent findings in extremely long-living mammal species such as naked mole-rats challenge this proposition. Among birds, parrots are exceptionally long-living with an average MLSP of 25 years, and with some species living more than 70 years. By contrast, quail are among the shortest living bird species, averaging about 5-fold lower MLSP than parrots. To test if parrots have correspondingly (i) superior antioxidant protection and (ii) lower levels of oxidative damage compared to similar-sized quail, we measured (i) total antioxidan..View full abstract
We gratefully acknowledge the assistance on diet formulation provided by Kirk C. Klasing and Ron Newman. This research was supported by funding from the Australian Research Council. No competing financial interests exist. The study was conceived and planned by all three authors; the experiments were carried out by MK Montgomery and the manuscript was written by all three authors.