Identifying molecular mechanisms linked to variation in lifespan, reproductive output and sexually selected traits is key to understanding life‐history evolution in wild populations. Telomere length (TL) and attrition (ΔTL) have been proposed as biomarkers of somatic state and maintenance (survival). Yet evidence linking telomeres to lifetime fitness and ornament expression remains limited. We quantified age‐related variation...

Plastics are deeply embedded in modern life, but their degradation releases micro- and nanoplastics (MNPs) into ecosystems. These persistent particles are found everywhere, from oceans to the human body, and raise growing concerns about environmental and human health, biodiversity, and sustainability implications. Despite increasing awareness, effective responses to MNP pollution remain limited by unresolved challenges in scie...

Microplastic (MP) contamination represents an issue of global concern for both aquatic and terrestrial ecosystems, but only in recent years, the study of MPs has been focused on freshwaters. Several monitoring surveys have detected the presence of a wide array of MPs differing in size, shape, and polymer composition in rivers and lakes worldwide. Because of their role of sink for plastic particles, the abundance of MPs was inv...

In fish, interspecific interactions between nonnative and other sympatric species are considered determinants in shaping species assemblages. Such interactions can also arise between nonnative fish species only, including salmonids such as the brown trout ( Salmo trutta , Linnaeus, 1758) and the rainbow trout ( Oncorhynchus mykiss , Walbaum, 1792), returning contrasting outcomes. The present manipulative experiment was aimed a...