This work aims to establish baseline frequencies of micronuclei (MN) and nuclear abnormalities (NA) in native fish species collected in situ from the Paraná River. For this purpose, the micronucleus test was applied in peripheral blood erythrocytes from specimens obtained from samplings collected at two localities (Posadas and Candelaria, Misiones, Argentina) during the period 2007-2010. The re...

Ecological studies on native and invasive populations of European perch Perca fluviatilis pumpkinseed Lepomis gibbosus are often based stable isotope (SI) analysis dorsal muscle, where samples usually taken from sacrificed fishes. However, other tissues, such as scale fin tissue, can be used non-lethal alternatives, their SI values standardised to muscle for comparative purposes. In both pumpki...

Invasive species are a concern worldwide as they can displace native species, reduce biodiversity, and disrupt ecological processes. European bird cherry (Prunus padus) (EBC) is an invasive ornamental tree that is rapidly spreading and possibly displacing native trees along streams in parts of urban Alaska. The objectives of this study were to: 1) map the current distribution of EBC along two A...

The invasive macroalgal species Avrainvillea sp. and native species Halimeda kanaloana form expansive meadows that extend to depths of 80 m or more in the waters off of O'ahu and Maui, respectively. Despite their wide depth distribution, comparatively little is known about the biota associated with these macroalgal species. Our primary goals were to provide baseline information on the fish faun...

Abstract Loss of estuarine and coastal habitats worldwide has reduced nursery habitat function for diverse fishes, including juvenile Chinook salmon ( Oncorhynchus tshawytscha ). Underutilized off-channel such as flooded rice fields managed ponds present opportunities improving rearing conditions increasing diversity along migratory corridors. While experiments in have shown enhanced growth rat...

As humans move species around the globe, biotic homogenization decreases diversity. It is therefore crucial to understand factors influencing invasion success at a global scale. I analyzed factors predicting establishment of freshwater fishes transferred internationally, based on 1424 cases of first introductions from one country to another as reported in FishBase, an encyclopedic database of f...