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1. Life‐history theory predicts that high reproductive investment alters self‐maintenance. Several mechanisms underlying the cost of reproduction have been previously suggested, but how parental effort may impact cell and organism maintenance remains largely unknown. The effects of oxidative stress – the imbalance between oxidative damage and defences – on telomere dynamics may underlie this relationship...
In biparental species, the response of parents when their mates are disadvantaged is highly variable. Moreover, experimental studies on parental effort have mainly focused on short-lived birds whose breeding constraints largely differ from those of long-lived species such as seabirds. We investigated the short- and long-term consequences of handicapping one parent within Adélie penguin, Pygoscelis...
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