Traffic noise exposure alters nestling physiology and telomere attrition through direct, but not maternal, effects in a free-living bird

摘要: Anthropogenic impacts, such as noise pollution from transportation networks, can serve stressors to some wildlife species. For example, increased exposure traffic has been found alter baseline and stress-induced corticosterone levels, reduce body condition reproductive success, increase telomere attrition in free-living birds. However, it remains unknown if alterations nestling phenotype are due direct or indirect effects of exposure. (maternal) may occur altered mothers results differential deposition yolk steroids other components eggs. Noise also levels directly, given that nestlings cannot escape the nest during development. Here, we examined maternal versus on (as measured by size-corrected mass) tree swallows (Tachycineta bicolor). We used a two-way factorial design partially cross-fostered eggs between nests exposed differing (i.e. amplitudes) noise. were not cross-fostered, investigated dynamics. Our show positive relationship exposure, but While did find nestlings, was negatively associated with condition. greater for amplitudes. These suggest direct, rather than maternal, result potentially long-lasting consequences Reduced have shown post-fledging survival this Given human networks continue expand, strategies mitigate critical periods breeding) be needed maintain local population health passerines, swallows.