Cetaceans are sentinels of marine ecosystem health and are increasingly exposed to protozoal pathogens. This study investigated the occurrence and molecular identity of Sarcocystidae protozoa in 159 stranded cetaceans representing 21 species along the Brazilian coast. Molecular analysis based on PCR amplification and sequencing of the sarcocystid internal transcribed spacer 1 (ITS1) region revealed infections in 14 individuals...

Megninia ginglymura (Mégnin, 1877) (Acariformes: Analgoidea: Analgidae) is a common feather mite of laying hens and a potential contributor to plumage damage and reduced productivity, yet its population dynamics and microhabitat use remain insufficiently characterized under modern commercial conditions. We conducted a year-long assessment of M. ginglymura abundance and intra-host distribution across three major production syst...

This study evaluated the effect of N-acetylcysteine ​​on oxidative biochemistry and bone damage during the development of ligature-induced experimental periodontitis in rats. The rats were divided into three groups (n = 8/group): control, experimental periodontitis (EP), or experimental periodontitis plus daily N-acetylcysteine administration (EP + NA) (100 mg/kg/day). Periodontitis was induced by bilateral silk ligatures on t...

The aim of this study was to evaluate the effect of xylanase addition (1.8 g/kg dry matter [DM]) to tropical grass haylage used in total mixed rations (TMR) on in vitro organic matter degradability, ruminal fermentation kinetics, and methane (CH4) emission. A completely randomized design was adopted in a 4 × 2 factorial arrangement, corresponding to four tropical grass cultivars (Andropogon, Mombaça, Massai, and Marandu) with...

Purpose of Review To provide a comprehensive overview of key findings in research involving AD-MSCs and IONPs. Recent Findings Recent studies demonstrate the use of rabbits as a source for obtaining AD-MSCs, although human and murine sources remain the most commonly used. Regarding cell viability and IONP concentration, it is observed that high levels of IONPs can negatively impact the viability of AD-MSCs. Therefore, concentr...

Purpose of Review The primary objectives of this review were to assess the rate of immune rejection associated with previously conducted xenogeneic mesenchymal stem cell (MSC) transplantations and to identify the animal species involved in these studies. Recent Findings Gene knockout strategies represent a highly promising approach for cross-species transplantation, particularly in humans. This is crucial because the human bod...

Mangroves represent a particularly vulnerable coastal ecosystem to the problem of marine litter. However, research addressing the impact of macroscopic litter on mangrove crabs remains limited. The aim of this study was to characterize diversity, abundance, and size of the semi-terrestrial crabs in a mangrove swamp heavily affected by macroscopic marine litter, in Southeastern Brazil. It was also aimed at verifying any potenti...

The search for safe and effective anaesthetic agents for aquaculture is essential to improve fish welfare and management practices. This study evaluated the anaesthetic efficacy of Origanum vulgare essential oil (OVEO) in juvenile tambaqui ( Colossoma macropomum ), an important Amazonian species. A total of 108 fish were exposed to immersion baths with increasing OVEO concentrations (19.04–57.12 mg L⁻ 1 ). Behavioral endpoints...

The invasive brown alga Rugulopteryx okamurae (Ochrophyta) has undergone a rapid expansion in the Strait of Gibraltar sinceits introduction in 2015, significantly altering coastal habitats. This study focused on analyzing the composition and structure of epifaunal bryozoan assemblages associated with R. okamurae populations on infralittoral rocky bottoms in the Strait of Gibraltar and adjacent areas (southern Spain). Seven sam...

An unprecedented precipitation event in Rio Grande do Sul, Brazil, between April and May 2024 caused widespread floods and landslides. This extreme event impacted 96% of the state’s municipalities, affecting approximately 2.4 million people and resulting in 183 deaths. This article reports the magnitude of this extreme event, focusing on the preliminary results of a comprehensive landslide inventory. Our analysis revealed that...