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Canovas M, Mentaberre GG, Tvarijonaviciute A, Casas-Díaz E, Navarro N, Lavín S, Soriguer R, Candela MG, Serrano Ferron E.2014. Fluctuating asymmetry could be reliable proxy for oxidative stress in vertebrates. PeerJ PrePrints2:e616v1https://doi.org/10.7287/peerj.preprints.616v1
The study of fluctuating asymmetry (FA) in living organisms has produced contradictory results over the past few decades. Though the protocol for measuring FA is firmly established, the sources of FA remain unclear in many cases. Our goal is to study the relationship between FA and both the concentration of biomarkers of reactive oxygen species (ROS) and the body condition in a medium-sized mammal, the European wild boar (Sus scrofa). Using a Partial Least Squares regression (PLSr) we found a positive significant relationship between oxidative stress and FA but a negative relationship between oxidative stress and body condition of boar. Our results may suggest that FA can be used to assess the physiological cost associated with oxidative stress in mammals.