Mitigating human impacts including climate change on proliferative kidney disease in salmonids of running waters. Issue 4 (31st January 2022)

• Record Type: Journal Article
• Authors: Ros, Albert; Schmidt‐Posthaus, Heike; Brinker, Alexander
• Is Part Of: Journal of fish diseases. Volume 45:Issue 4(2022)
• Page Start: 497
• Page End: 521
• Publication Date: 2022-01-31
• Subjects: conservation -- global warming -- malacosporea life cycle -- management -- salmonid disease -- Tetracapsuloides bryosalmonae; Fishes -- Diseases -- Periodicals; 639.3
• DOI: 10.1111/jfd.13585
• Languages: English
• ISSNs: 0140-7775

Abstract

Abstract: Over the last two decades, an increasing number of reports have identified a decline in salmonid populations, possibly linked to infection with the parasite Tetracapsuloides bryosalmonae and the corresponding disease, that is, proliferative kidney disease (PKD). The life cycle of this myxozoan parasite includes sessile bryozoan species as invertebrate host, which facilitates the distribution of the parasite in running waters. As the disease outcome is temperature dependent, the impact of the disease on salmonid populations is increasing with global warming due to climate change. The goal of this review is to provide a detailed overview of measures to mitigate the effects of PKD on salmonid populations. It first summarizes the parasite life cycle, temperature‐driven disease dynamics and new immunological and molecular research into disease resistance and, based on this, discusses management possibilities. Sophisticated management actions focusing on local adaptation of salmonid populations, restoration of the riverine ecosystem and keeping water temperatures cool are necessary to reduce the negative effects of PKD. Such actions include temporary stocking with PKD‐resistant salmonids, as this may assist in conserving current populations that fail to reproduce.