Background. Thysanote Krøyer, 1863 (Copepoda, Siphonostomatoida, Lernaeopodidae) comprises 19 species of marine parasite that infect fishes. This report establishes a new Thysanote species based on new collections of copepods. The taxonomic status of this genus is not fully understood and therefore more relevant contributions are needed. Materials and Methods. The species description is based on male and female specimens collected from the olfactory sacs of spotted scat, Scatophagus argus, captured off Thailand in 2003. The specimens were studied using standard light and scanning electron microscopy techniques. Results. The studied specimens were assigned to Thysanote based on the presence of maxillary- and posterior processes and they exhibited unique characteristics such as distinctly short length of their maxillary- and posterior processes. Conclusion. Based on their unique characteristics, a new Thysanote species is erected, and named Thysanote chalermwati n. sp., thus bringing the number of congeners to 20.
A new species of Rhinonastes, hitherto monotypic, is described and illustrated from the nasal cavity of ‘curimat’, Prochilodus argenteus from São Francisco River, Brazil. Rhinonastes curimatae n. sp. presents a male copulatory organ with more than five rings while the type species of the genus is characterized by male copulatory organ with less than two rings. This is the first record of a nasal parasite in P. argenteus.
Nasal diseases of chronic nature are a common clinical complaint in canine practice. However, precise diagnosis in these cases is often difficult and require the use of various, additional diagnostic methods. The aim of this study was to estimate the occurrence of diseases of the upper respiratory tracts in dogs, and to evaluate the usefulness of endoscopy in the diagnostic process as a method of obtaining a final diagnosis. In the group of dogs in which rhinoscopy was performed, the most common final diagnoses were nonspecific chronic rhinitis, followed by neoplasms and infectious rhinitis. It can be concluded that rhinoscopy should be considered mainly as a preliminary method of inspection of the nasal cavity, helpful in obtaining the most representative tissue specimen/specimens for histopathology. In some cases, especially foreign objects and congenital abnormalities rhinoscopy can give the possibility of obtaining a final diagnosis. However, even in these situations and also when any macroscopic lesion is found during endoscopy, microscopic examination of the mucosa specimen should be performed.
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