We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Gyrodactylus salmonis infection impairs the olfactory system of rainbow trout.
- Authors
Lari, E; Pyle, G G
- Abstract
Monogenean worms are ectoparasites that are known to be infectious to a wide variety of fish. Few species of monogenean parasites have been reported in the olfactory chamber of fish in current peer-reviewed literature. However, the impacts of these parasites on the olfactory system are not well understood. In this study, the effects of Gyrodactylus salmonis on the olfactory system structure and performance were investigated in rainbow trout ( Oncorhynchus mykiss). The olfactory performance of the infected fish was examined using an electro-olfactography ( EOG) technique, while the ultrastructure of the olfactory rosette was studied using scanning electron microscopy ( SEM) and light microscopy ( LM). The infected rainbow trout displayed reduced responses to two standard olfactory cues (L-alanine and TCA). The SEM micrographs revealed that many regions of the olfactory epithelium in the infected fish were heavily pitted and the LM examination of the olfactory epithelium showed local proliferation of mucous cells in the sensory regions as compared to the control group. The results of this study demonstrated that G. salmonis causes physical damage to the olfactory system of fish that lead to olfactory impairment.
- Subjects
INFECTIONS in fish; SMELL disorders; RAINBOW trout; ECTOPARASITES; PARASITES
- Publication
Journal of Fish Diseases, 2017, Vol 40, Issue 10, p1279
- ISSN
0140-7775
- Publication type
Article
- DOI
10.1111/jfd.12597