This study evaluated the anesthetic combination of dexmedetomidine and ketamine in free-ranging Phrynops geoffroanus , assessing cardiopulmonary and sedative variables, as well as pharmacological reversal with atipamezole. Twenty-five adult individuals were allocated into two groups: HG (dexmedetomidine 0.1 mg/kg + ketamine 10 mg/kg; n = 13) and LG (dexmedetomidine 0.05 mg/kg + ketamine 10 mg/kg; n = 12). Heart rate, respirato...

Rays of the family Rhinopteridae Jordan & Evermann, 1896 are highly migratory and widely distributed in warm tropical and temperate waters. Along the Brazilian coast, the presence of two species has been recorded: Rhinoptera bonasus Mitchill, 1815 and Rhinoptera brasiliensis Müller, 1836. These stingrays are commonly caught as bycatch in trawl fisheries, however, the two species lack distinctive external morphological features...

Single-cell RNA sequencing (scRNA-Seq) enables analysis of gene expression at single-cell resolution. RNA velocity analysis infers the temporal dynamics of transcriptional states from the relative abundances of spliced/unspliced mRNA quantified via scRNA-Seq. Classical RNA velocity approaches, such as scVelo, implement gene-specific kinetic modeling. Deep learning methods including DeepVelo, VeloVI, LatentVelo, SymVelo, and sc...

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...