Temperature-related parasite infection dynamics: the case of proliferative kidney disease of brown trout.

Strepparava, Nicole; Segner, Helmut; Ros, Albert; Hartikainen, Hanna; Schmidt-Posthaus, Heike; Wahli, Thomas (2018). Temperature-related parasite infection dynamics: the case of proliferative kidney disease of brown trout. Parasitology, 145(3), pp. 281-291. Cambridge University Press 10.1017/S0031182017001482

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Center for Fish and Wildlife Health (FIWI)

UniBE Contributor:

Strepparava, Nicole; Segner, Helmut; Ros, Albert Frank; Schmidt-Posthaus, Heike and Wahli, Thomas

Subjects:

600 Technology > 630 Agriculture

ISSN:

0031-1820

Publisher:

Cambridge University Press

Language:

English

Submitter:

Monika Mumenthaler

Date Deposited:

17 Dec 2018 13:48

Last Modified:

23 Oct 2019 07:56

Publisher DOI:

10.1017/S0031182017001482

PubMed ID:

28831940

Uncontrolled Keywords:

Tetracapsuloides bryosalmonae brown trout host–parasite interaction parasite kinetics parasite shedding proliferative kidney disease temperature

BORIS DOI:

10.7892/boris.122243

URI:

https://boris.unibe.ch/id/eprint/122243

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