<i>Tetracapsuloides bryosalmonae</i> in spawning pink salmon, Oncorhynchus gorbuscha (Walbaum), in the Quinsam River, British Columbia, Canada

Braden, Laura M.; Prosperi-Porta, Gina; Kim, E; Jones, Simon R. M.

doi:10.1111/j.1365-2761.2010.01145.x

Cited by 6 publications

(6 citation statements)

References 19 publications

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“…Investigations have confirmed infections with T. bryosalmonae in wild populations of salmonid fishes both in North America and in Europe. The presence of T. bryosalmonae has been demonstrated in wild fish through histological observations of parasite cells (Hedrick et al 1993, Braden et al 2010, by PCR and sequencing (Sterud et al 2007), and in addition, wild fish with pathological signs corresponding to PKD have been reported (Wootten & McVicar 1982, Bucke et al 1991, Feist & Bucke 1993, Sterud et al 2007). Yet, the impact of PKD on wild fish is a matter of some uncertainty because the effect of PKD on wild fish populations has not been adequately documented.…”

Section: Introductionmentioning

confidence: 99%

Tetracapsuloides bryosalmonae and PKD in juvenile wild salmonids in Denmark

Skovgaard¹,

Buchmann²

2012

Dis. Aquat. Org.

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The myxozoan Tetracapsuloides bryosalmonae is the causative agent of proliferative kidney disease (PKD), a widespread and serious condition in salmonid fishes in Europe and North America. In Europe, PKD is primarily reported affecting farmed rainbow trout Oncorhynchus mykiss, but limited information exists on the occurrence and effects of T. bryosalmonae in wild salmonids. We investigated the presence of T. bryosalmonae in salmonids in Denmark and found that the parasite is common in the dominant wild Danish salmonid, brown trout Salmo trutta, and that it also appears in wild Atlantic salmon S. salar. Clinical signs of PKD were present in some brown trout, but in most cases the parasite was found through histology and/or PCR investigations of kidney tissue in fish that showed no signs of infection. Even though there was high similarity between internal transcribed spacer 1 (ITS1) sequences of T. bryosalmonae from wild brown trout, Atlantic salmon and farmed rainbow trout, a geographic pattern was indicated among T. bryosalmonae ITS1 phylotypes. None of the investigated streams were found free of T. bryosalmonae, but prevalence of the parasite was highly variable.

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Section: Introductionmentioning

confidence: 99%

Tetracapsuloides bryosalmonae and PKD in juvenile wild salmonids in Denmark

Skovgaard¹,

Buchmann²

2012

Dis. Aquat. Org.

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“…Independent of whether salmonids as the grayling and the rainbow trout might be dead end hosts for (the European strain of) T. bryosalmonae , the parasite does still infect these salmonids and cause disease. Native species that have been found susceptible to T. bryosalmonae infections in the wild are for Europe: brown trout ( Salmo trutta : Wahli et al., 2002), Atlantic salmon ( Salmo salar : Feist et al., 2002; Lauringson et al., 2021; Sterud et al., 2007), Arctic charr ( Salvelinus alpinus : Kristmundsson et al., 2010; Mo & Jørgensen, 2017; Svavarsdottir et al., 2021), European grayling ( Thymallus thymallus : Feist & Bucke, 1993; Vasemägi et al., 2017; Wahli et al., 2002) and European whitefish ( Coregonus lavaretus : Sobocinski et al., 2018); and for North America: rainbow trout ( Oncorhynchus mykiss : Hutchins et al., 2018b; Ruggeri et al., 2020), Chinook salmon ( Oncorhynchus tshawytscha : Hutchins et al., 2018b), Cutthroat trout (Henderson & Okamura, 2004; Oncorhynchus clarkii : Macconnell & Peterson, 1992), pink salmon ( Oncorhynchus gorbuscha : Braden et al., 2010), brook trout, Arctic charr ( Salvelinus alpinus : Brown et al., 1991) and, for example, mountain whitefish in the Yellowstone River ( Prosopium williamsoni : Hutchins et al., 2018b).…”

Section: The Parasite’s Life Cycle and Proliferative Kidney Diseasementioning

confidence: 99%

Mitigating human impacts including climate change on proliferative kidney disease in salmonids of running waters

Ros

Schmidt‐Posthaus

Brinker

2022

Journal of Fish Diseases

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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.

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“…In a recent study, a very high prevalence of T. bryosalmonae was observed in Atlantic salmon, Arctic charr (Salvelinus alpinus) and brown trout from the rivers along the Norwegian coast [60]. Similarly, T. bryosalmonae incidences were associated with rising temperatures along with the decline of wild fish populations such as Arctic charr in Iceland [43]; brown trout and Atlantic salmon in Denmark [61]; pink salmon in Canada [62]; brown trout in Estonia [42,63]; brown and rainbow trout from Slovenia [64]; brown trout and grayling in Finland [65]. In a recent study, European whitefish (Coregonus lavaretus) infected with T. bryosalmonae were isolated from the lakes of Finland [66].…”

Section: Geographic Distribution Of T Bryosalmonae and Impact Of Pkd Among Wild Salmonidsmentioning

confidence: 99%

The Malacosporean Myxozoan Parasite Tetracapsuloides bryosalmonae: A Threat to Wild Salmonids

2019

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Tetracapsuloides bryosalmonae is a myxozoan parasite responsible for proliferative kidney disease (PKD) in a wide range of salmonids. PKD, characterized by high mortality and morbidity, is well known for affecting aquaculture operations and wild salmonid populations across Europe and North America. The life cycle of T. bryosalmonae revolves around freshwater bryozoan and salmonid fish hosts. In recent years, T. bryosalmonae has been reported among wild salmonids from the European countries where it has not been reported previously. T. bryosalmonae is believed to be a possible reason for the diminishing wild salmonid populations in the natural water bodies of many European countries. Climate crisis driven rising water temperature can further accelerate the distribution of T. bryosalmonae. Expansion of the geographical distribution of T. bryosalmonae may further advocate the decline of wild salmonid populations, especially brown trout (Salmo trutta) in their habitats. Mathematical models are used to understand the pattern and distribution of T. bryosalmonae among the host in the natural water bodies. The present manuscript not only summarizes the incidences of T. bryosalmonae among the wild salmonid populations, but also discusses the contemporary understanding about the development of T. bryosalmonae in its hosts and the influences of various factors in the spread of the disease in the wild.

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Tetracapsuloides bryosalmonae in spawning pink salmon, Oncorhynchus gorbuscha (Walbaum), in the Quinsam River, British Columbia, Canada

Cited by 6 publications

References 19 publications

Tetracapsuloides bryosalmonae and PKD in juvenile wild salmonids in Denmark

Tetracapsuloides bryosalmonae and PKD in juvenile wild salmonids in Denmark

Mitigating human impacts including climate change on proliferative kidney disease in salmonids of running waters

The Malacosporean Myxozoan Parasite Tetracapsuloides bryosalmonae: A Threat to Wild Salmonids

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