The El Niño –Southern Oscillation (ENSO) profoundly alters climatological and hydrological conditions, reshaping environmental gradients and ecological dynamics in riverine, estuarine, and coastal ecosystems. We hypothesized that El Niño events would promote homogenization of fish assemblages and reduce β-diversity, whereas La Niña conditions would enhance habitat differentiation and increase β-diversity. To test this hypothes...

L -asparaginase is an amidohydrolase enzyme that catalyses the hydrolysis of L-asparagine into L-aspartic acid and ammonia. This enzyme has significant biotechnological applications, functioning as an antineoplastic agent in the pharmaceutical industry and as a tool for reducing acrylamide formation in the food industry. This study aimed to identify a filamentous fungus strain capable of synthesizing a new L -asparaginase and...

Brazil is among the world’s leading avocado producers, with cultivation increasingly threatened by gall-inducing midges that damage blossoms and impair fruit development. During surveys in commercial Hass avocado orchards in Minas Gerais, Brazil, a previously unknown species of Bruggmanniella Tavares, 1909 (Diptera: Cecidomyiidae) was discovered infesting young fruits. Here, we describe Bruggmanniella abacate sp. nov. Garcia a...

Aim We investigate the distribution of dispersal modes — endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and dispersal agents (e.g., the main vectors moving seeds). We expected climate to be the mai...

Circoviruses (CVs) infect diverse mammals, birds, and freshwater fish and are linked to diseases causing major economic losses. Despite being well studied in psittacines, their circulation in other avian groups and mammals is poorly understood. We conducted molecular surveillance of CVs in migratory birds and mammals along the Paraná coast, southern Brazil. Sterna hirundinacea specimen tested positive by Nested-PCR for GullCV....

This study evaluated whether human chorionic gonadotropin (hCG) affects biometric, echotextural, and signs color Doppler variables of the original corpus luteum (oCL) in Morada Nova ewes. Sixty-four ewes underwent estrus synchronization with intravaginal sponges impregnated with 60 mg of medroxyprogesterone acetate for six days, with an intramuscular injection of 37.5 µg of d-cloprostenol and 200 IU of equine chorionic gonadot...

The predatory exploitation of the juçara palm ( Euterpe edulis Martius) for the extraction of hearts of palm has caused its inclusion on the list of endangered species, which reduces the seed bank with incalculable ecological losses. This study aimed to analyze genotypes of E. edulis from the Brazilian states of Espírito Santo and Minas Gerais grown at different altitudes and select the best individuals regarding the physical...

Tropical zones currently produce the majority of the world’s agricultural food; however, their thermal environment poses a challenge to animals. In this context, silvopastoral systems (SPS) have been proposed to provide animals with milder microclimates owing to their shaded areas. To evaluate the impact of the silvopastoral system on the behavior, gonadosomatic development, and endocrine profile of young beef bulls, as well a...