Species of the genus Senga comprise a group of bothriocephalidean cestodes that predominantly parasitize freshwater teleost fishes, causing severe histopathological alterations due to scolex attachment to the digestive tract or obstruction of the intestinal lumen. The Siamese fighting fish Betta splendens is the type-host of Senga besnardi , the type species of the genus known only from the original description. Despite the im...

Understanding tropical seabird foraging strategies is essential for evaluating ecosystem functioning within Very Large Marine Protected Areas (VLMPAs). We investigated spatial and trophic behavior of brown booby ( Sula leucogaster ) at the Saint Peter and Saint Paul Archipelago (SPSP), a remote breeding site within a VLMPA in the equatorial Atlantic Ocean. Using GPS tracking from 207 individuals (706 trips, 2014–2015 and 2023–...

Species of Micropleura Linstow, 1906 (Dracunculoidea: Nematoda) are common parasites of crocodilians worldwide. Studies related to this genus remain scarce, particularly regarding genetic characterizations, due to the difficulty in obtaining the parasite specimens. Although the morphology of M . vazi Travassos, 1933, a parasite of Caiman spp. in the Neotropics, has been previously evaluated, some morphological inconsistencies...

This study evaluated the anti-inflammatory and antioxidant effects of a methanolic extract of Byrsonima intermedia leaves (EBi) in a rat model of 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis. Male Wistar rats received intracolonic TNBS for lesion induction and relapse, followed by oral treatment with EBi for seven days. EBi markedly reduced the severity of colonic injury, as demonstrated by a 63% decrease in macr...

The Developmental Origins of Health and Disease (DOHaD) theory proposes that adverse conditions during critical developmental windows can increase disease susceptibility throughout life. Maternal protein restriction (MPR) is a well-established experimental model that impairs offspring lung development, affecting pulmonary structure, metabolism, and molecular pathways from early life to aging. However, little is known about its...

Bacterial diseases cause significant losses in the aquaculture of Amazonian fishes (Arapaima gigas, Brycon amazonicus, and Colossoma macropomum). Lactococcosis-causing bacteria (LCB) have emerged as important pathogens in global aquaculture, and although they have already been isolated from these fish species, their pathogenic role remains unconfirmed. This study evaluated the susceptibility of three Amazonian fish species to...

Purpose Oswaldofilaria bacillaris is the type species of the genus, but its morphology remains little known and partially contradictory. Moreover, there are no genetic data and scanning electron microscopical observations on the species, like in most Oswaldofilaria spp. The phylogenetic relationships among Oswaldofilaria spp. are practically unknown. This study aimed to evaluate the detailed morphology of O . bacillaris , prov...