Amphibians are among the most threatened groups of vertebrates worldwide, and the increasing release of emerging contaminants such as microplastics (MPs) and nanoparticles (NPs) poses a growing ecological risk to these organisms. This study evaluated the semi-chronic effects of polyethylene microplastics (60 mg/L) (PE-MPs) and titanium dioxide nanoparticles (10 µg/L) (TiO 2 NPs), individually and in combination (Mix), on oxida...

Reports of teratogenic embryos in elasmobranchs have been documented in multiple species, with proposed aetiologies including environmental disturbances, genetic mutations, predation, exposure to endocrine‐disrupting compounds and maternal stress. Nevertheless, complex congenital malformations such as bicephaly remain exceptionally rare, particularly among freshwater stingrays of the family Potamotrygonidae. The present study...

Root-knot nematodes (RKN - Meloidogyne spp.) are sedentary endoparasites that attack a wide range of plants species, including coffee. Meloidogyne exigua , M. incognita , and M. paranaensis are most common RKN species found in coffee-producing areas of Brazil, with M. exigua being the most prevalent. Effective control of these nematodes may be species-specific, necessitating accurate identification. Loop-mediated isothermal am...

Since the 1970s, striking amphibian declines in population abundances and presumed extinctions have been recorded globally. The chytrid fungus Batrachochytrium dendrobatidis ( Bd ) is one of the key drivers of these declines. To investigate the potential role of Bd in the decline of Brazil's amphibians, we first used eDNA metabarcoding to survey for DNA traces of 10 threatened amphibian species from the Southern Brazilian Atla...