Temperature-related parasite infection dynamics: the case of proliferative kidney disease of brown trout.
Publisher DOI
PubMed ID
28831940
Abstract
Climate change, in particular rising temperature, is suspected to be a major driver for the emergence of many wildlife diseases. Proliferative kidney disease of salmonids, caused by the myxozoan Tetracapsuloides bryosalmonae, was used to evaluate how temperature dependence of host-parasite interactions modulates disease emergence. Brown trout (Salmo trutta fario) kept at 12 and 15 °C, were experimentally infected with T. bryosalmonae. Parasite development in the fish host and release of spores were quantified simultaneously to unravel parasite transmission potential from the vertebrate to the invertebrate host. A change to a stable plateau in infection intensity of the kidney coincided with a threshold at which spore shedding commenced. This onset of parasite release was delayed at the low temperature in accordance with reaching this infection intensity threshold, but the amount of spores released was irrespective of temperature. The production of parasite transmission stages declined with time. In conclusion, elevated temperature modifies the parasite transmission opportunities by increasing the duration of transmission stage production, which may affect the spread and establishment of the parasite in a wider range of rivers.
Date Issued
2018-03
Publication Type
Article
Subject(s)
Subjects
Tetracapsuloides bryosalmonae
brown trout host–parasite interaction parasite kinetics parasite shedding proliferative kidney disease temperature
brown trout host–parasite interaction parasite kinetics parasite shedding proliferative kidney disease temperature
Language(s)
en
Author(s)
Hartikainen, Hanna |
Additional Credits
Journal
Parasitology
Publisher
Cambridge University Press
ISSN
0031-1820
Access(Rights)
open.access