A SIGNIFICANT COMPONENT OF AGEING (DNA DAMAGE) IS REFLECTED IN FADING BREEDING COLORS: AN EXPERIMENTAL TEST USING INNATE ANTIOXIDANT MIMETICS IN PAINTED DRAGON LIZARDS

@article{Olsson2012ASC,
  title={A SIGNIFICANT COMPONENT OF AGEING (DNA DAMAGE) IS REFLECTED IN FADING BREEDING COLORS: AN EXPERIMENTAL TEST USING INNATE ANTIOXIDANT MIMETICS IN PAINTED DRAGON LIZARDS},
  author={Mats Olsson and Michael Tobler and Mo Healey and C{\'e}cile Perrin and Mark R. Wilson},
  journal={Evolution},
  year={2012},
  volume={66}
}
A decade ahead of their time, von Schantz et al. united sexual selection and free radical biology by identifying causal links between deep‐rooted physiological processes that dictate resistance to toxic waste from oxidative metabolism (reactive oxygen species, ROS), and phenotypic traits, such as ornaments. Ten years later, these ideas have still only been tested with indirect estimates of free radical levels (oxidative stress) subsequent to the action of innate and dietary antioxidants. Here… 
Long‐term effects of superoxide and DNA repair on lizard telomeres
TLDR
It is concluded that reactive oxygen species and DNA repair are fundamental for both short‐ and long‐term regulation of lizard telomere length with pronounced effects of early season cellular stress detectable on telomeres length near lizard death.
Condition-dependent SOD activity attenuates morph-specific superoxide effects on sperm performance
Sperm competition theory predicts a negative correlation between somatic investment in traits that aid in pre- and postcopulatory sexual selection. Sperm performance is critical for postcopulatory
An age‐related decline in the expression of a red carotenoid‐based ornament in wild birds
TLDR
This work analyzed longitudinal plumage coloration data obtained throughout 28 years in free‐living birds and detected an initial increase in redness during the first 2 years of life and a subsequent decline, the first demonstration of an age‐related ketocarotenoid‐based color decrease detected by simultaneously testing within‐ and between‐individual variability in wild animals.
Title : The relationship of body condition , superoxide dismutase and superoxide with sperm 1 performance 2 3
TLDR
Sperm competition theory predicts a negative correlation between somatic investment in traits that aid in preand postcopulatory sexual selection and males can ameliorate damage to spermatozoa by investing in the production of antioxidants, like superoxide dismutase.
The relationship of body condition, superoxide dismutase and superoxide with sperm performance
Sperm competition theory predicts a negative correlation between somatic investment in traits that aid in pre- and postcopulatory sexual selection. Sperm performance is critical for postcopulatory
The relationship of body condition, superoxide dismutase, and superoxide with sperm performance
Sperm competition theory predicts a negative correlation between somatic investment and traits that aid in pre- and postcopulatory sexual selection. Sperm performance is critical for postcopulatory
The role of oxidative stress in postcopulatory selection
TLDR
The basic mechanisms in OS biology, why mitochondria are the primary source of ROS and ATP production during oxidative metabolism, and why sperm, and its performance, is uniquely susceptible to OS are reviewed.
Exercise training has morph-specific effects on telomere, body condition and growth dynamics in a color-polymorphic lizard.
TLDR
The results of this work suggest that aggressive-territory holding-bibbed males suffer physiological costs that may reduce longevity compared to non-b Bibbed males with superior postcopulatory traits.
Ageing and the cost of maintaining coloration in the Australian painted dragon
TLDR
It is suggested that colour maintenance is a costly phenomenon in terms of telomere erosion, and that overall ROS levels do not seem to be a crucial component linking ornamental coloration and telomeres erosion in the study system.
Conditional Handicaps in Exuberant Lizards: Bright Color in Aggressive Males Is Correlated with High Levels of Free Radicals
TLDR
This result is consistent with handicap principles in that males with the more pronounced signal carry a higher cost (higher ROS levels) when being in better body condition, while maintaining more vivid coloration (the condition-dependent trait).
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TLDR
Carotenoid intake does not reduce circulating levels of ROS or bSO, suggesting that carotenoids are inefficient antioxidants in vivo and, therefore, are unlikely to provide a direct link between oxidative stress and colouration.
Good genes, oxidative stress and condition–dependent sexual signals
The immune and the detoxication systems of animals are characterized by allelic polymorphisms, which underlie individual differences in ability to combat assaults from pathogens and toxic compounds.
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TLDR
An experiment where male and female zebra finches were provided with increasing carotenoid doses in the drinking water during 4 weeks and found a positive correlation between the change in circulating carOTenoids and antioxidant defenses.
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TLDR
These results demonstrate the antioxidant function of carotenoids in birds and show that simultaneous assessment of oxidative stress‐driven damage, antioxidant barrier, and individual antioxidants is critical for explaining the potential costs of immune system activation.
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TLDR
The results suggest low–quality neonatal nutrition resulted in a long–term impairment in the capacity to assimilate dietary antioxidants, thereby setting up a need to trade off the requirement for antioxidant activity against the need to maintain morphological development and sexual attractiveness, which could underpin the link between early nutrition and senescence.
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TLDR
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