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...

Electrophysiology is an emerging approach in the context of environmental toxicology, where it represents a non-invasive biomarker that has been little studied in tropical fish. In this study, we evaluated electrocardiographic (ECG) and electromyographic (EMG) responses in Hyphessobrycon heterorhabdus , a native Amazonian species considered a promising biological model for ecotoxicological studies, and Menthol was selected as...

Aims Perennial forage systems in tropical regions are predominantly dryland; however, increasing drought frequency associated with climate change has accelerated the adoption of irrigation. Selecting forage species capable of maintaining elemental balance and favorable plant-soil interactions is essential to sustain productivity. This study evaluated the drought tolerance of Mavuno and Zuri grasses under tropical field conditi...

Soil microbiomes are critical for ecosystem functioning, yet the global influences of climate and agricultural practices on their diversity and structure remain incompletely characterized. Here we analyzed 1921 soil samples from 33 countries worldwide across diverse biomes to assess how climate gradients and agricultural inputs, including pesticides and fertilizers, shape prokaryotic and fungal communities. We found that micro...

Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time‐consuming, especially in the highly diverse tropics. We aimed to prov...