A novel acylhydrazone Schiff base ligand, 2-fluoro-N′-[(1E,2E)-3-(2-methoxyphenyl)prop-2-en-1-ylidene]benzohydrazide (L), was synthesized and coordinated with Ni(II), Cu(II), and Zn(II) ions. The resulting complexes were characterized using TGA–DSC, FTIR/ATR, HRESIMS, 1 H NMR, PXRD, elemental analysis, and complexometric titration, confirming a 1:2 metal-to-ligand stoichiometry and the formation of polycrystalline compounds. C...

The pygmy ( Kogia breviceps ) and dwarf ( Kogia sima ) sperm whales are cryptic cetaceans characterized by inconspicuous surfacing behavior, small group sizes, and deep‐diving habits, making visual detection particularly challenging. Here, we present the first broad‐scale passive acoustic monitoring (PAM) assessment of Kogia spp. occurrence along the Brazilian coast, spanning both the Equatorial Atlantic Ocean (EAO) and Southw...

Tricaine methanesulfonate (MS-222) is one of the most widely used anesthetics in aquaculture management procedures and the ornamental fish trade; however, at excessive concentrations, it may induce undesirable physiological responses in fish. Thus, we evaluated the safety and reversibility of MS-222–induced anesthesia in the Amazonian flag tetra, Hyphessobrycon heterorhabdus . Fish were subjected to immersion baths at concentr...

An experiment was conducted to evaluate the effects of broiler breeder age on the growth performance, nutrient metabolism, and intestinal histomorphometry of the progeny during early life. A total of 180 one-day-old Cobb 500 ® chicks, with an average initial body weight of 45.82 ± 2.21 g, were assigned to a completely randomized design with three treatments, six replicates, and 10 birds per replicate. The treatments consisted...

Persistent organic pollutants (POPs) are widespread contaminants that bioaccumulate in the food web, posing risks to wildlife, especially top predators. This study investigates the occurrence of POPs in liver tissues of 23 Magellanic Penguins ( Spheniscus magellanicus ) stranded along the Brazilian coast from June to September 2017. We analyzed concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides (DDTs...

Anthropogenic land use and land cover change (LULCC), combined with ongoing climate variability, poses significant challenges to environmental protection areas (EPAs) by altering ecosystem structure, degrading vegetation integrity, and disrupting local climate regulation. Despite their importance, traditional LULCC approaches often fail to incorporate dynamic environmental drivers, limiting their capacity to represent complex...