SEASONAL PATTERNS OF INFECTION BY Kudoa sp. (MYXOZOA) IN THE CATFISHES IN THE BRAZILIAN AMAZON REGION

Santos, João Lauro Figueiredo dos; Abrunhosa, Jacqueline Pompeu; Sindeaux-Neto, José Ledamir; Monteiro, Elideth Pacheco; Matos, Edílson

doi:10.20950/1678-2305.2019.45.2.449

Cited by 4 publications

(1 citation statement)

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“…Studies examining environmental conditions associated with myoliquefaction, however, are few. Although a link has been established between prevalence of infection and higher in situ water temperatures in some species (dos Santos et al., 2019), no studies to date have examined relationships between broad‐scale variability in the physical environment and myoliquefaction or Kudoa sp. infection.…”

Section: What Affects High‐value Fish Condition?mentioning

confidence: 99%

Achieving sustainable and climate‐resilient fisheries requires marine ecosystem forecasts to include fish condition

et al. 2021

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Marine ecosystem forecasting is an important innovation in fisheries science with considerable value for industry and management, providing new data‐driven means of predicting the distribution and availability of commercially exploited fish stocks over a range of timescales, including near‐real‐time and seasonal. Marine ecosystem forecasting is rapidly advancing as a field, yet tools produced for fisheries to date focus primarily on predicting species distributions. The next generation of marine ecosystem forecasting products could be enhanced by also incorporating predictions of biological characteristics of fish caught, such as body condition and epidemiological status, thereby expanding the utility of these methods beyond predicting distribution alone. Improving the biological dimensions of marine ecosystem forecasting could allow for optimization of efficiencies in wild‐capture fisheries by minimizing discarding and waste and maximizing the value of landed fish. These advancements are of direct benefit to industry and management, address several of the United Nations Sustainable Development Goals pertaining to fisheries sustainability and have the potential to support the maintenance of global food and micronutrient security under rapidly changing environmental conditions. Here, we describe the current state of the art in marine ecosystem forecasting; review the physical‐biological linkages that underlie variability in the body condition of commercially valuable fish and shellfish with particular reference to marine climate change; and outline key considerations for the next generation of marine ecosystem forecasting tools for wild‐capture fisheries.

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Section: What Affects High‐value Fish Condition?mentioning

confidence: 99%

Achieving sustainable and climate‐resilient fisheries requires marine ecosystem forecasts to include fish condition

et al. 2021

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Kudoa yasai n. sp. (Multivalvulida: Kudoidae) from the skeletal muscle of Macrodon ancylodon (Sciaenidae) on the northern Atlantic coast, Brazil

et al. 2020

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Increased prevalence and severity of Kudoa thyrsites (Cnidaria: Myxosporea) in Atlantic salmon Salmo salar exposed to deeper seawater

Jones

Long²

2022

Dis. Aquat. Org.

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Kudoa thyrsites is a myxozoan parasite of marine fish with a global distribution. In British Columbia (BC), Canada, severe infections are associated with an economically significant degradation of fillet quality in farmed Atlantic salmon. Exposures to naturally occurring actinospores at a coastal research laboratory were used to test the hypothesis that the prevalence and severity of K. thyrsites infections acquired by exposure of Atlantic salmon to seawater (SW) of various depths are not different. In Expt 1, fish were exposed to SW from 1, 7 or 13 m below the surface. Following exposure to deeper-sourced SW, the prevalence of K. thyrsites, determined from microscopic examination of muscle histology sections, was greater in all 4 trials and the severity of infection was greater in 2 trials. In Expt 2, infections were compared over time among salmon held in tanks supplied with deep-sourced SW (raw or UV-irradiated) or in a surface net-pen. The infection was observed in 35 of 40 fish sampled between 3 and 6 mo after tank exposure to raw SW. Coincidentally, the parasite was observed in 4 of 40 fish maintained in the net-pen. No consistent association of the parasite infection was observed with temperature; however, reduced salinity and solar radiation were not ruled out as factors which may reduce the risk of infection from surface SW. These findings require verification at commercial aquaculture sites in BC, as they will inform considerations related to farm siting and net-pen configuration.

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SEASONAL PATTERNS OF INFECTION BY Kudoa sp. (MYXOZOA) IN THE CATFISHES IN THE BRAZILIAN AMAZON REGION

Cited by 4 publications

References 0 publications

Achieving sustainable and climate‐resilient fisheries requires marine ecosystem forecasts to include fish condition

Achieving sustainable and climate‐resilient fisheries requires marine ecosystem forecasts to include fish condition

Kudoa yasai n. sp. (Multivalvulida: Kudoidae) from the skeletal muscle of Macrodon ancylodon (Sciaenidae) on the northern Atlantic coast, Brazil

Increased prevalence and severity of Kudoa thyrsites (Cnidaria: Myxosporea) in Atlantic salmon Salmo salar exposed to deeper seawater

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