Aquaculture, Fish and Fisheries最新文献

{"title":"Current Status of Hilsa (Tenualosa ilisha) Fisheries in Bangladesh and Implications for Future Research and Development","authors":"Md. Mehedi Alam,&nbsp;Mohammad Mahfujul Haque,&nbsp;Morena Santi,&nbsp;Md. Asadur Rahman,&nbsp;Neaz A. Hasan,&nbsp;Balaram Mahalder","doi":"10.1002/aff2.70040","DOIUrl":"https://doi.org/10.1002/aff2.70040","url":null,"abstract":"<p>Hilsa shad (<i>Tenualosa ilisha</i>) is an anadromous fish, making the single largest wild fishery in Bangladesh, supporting the livelihoods of about 2% of the population and contributing 1% to the national GDP. Several studies reported positive outcomes associated with its catch status, biology, ecology, nutritional profile, conservation and management and socio-economic impacts. However, significant knowledge gaps exist in hilsa fisheries, particularly in the areas crucial for research and development. In this article, we conducted a systematic review of literature to identify and address the knowledge gaps, challenges and research priorities in hilsa fisheries to ensure their sustainable management and production. Recent data from the Department of Fisheries (DoF) indicate rising production of hilsa in Bangladesh, sparking debate about its accuracy. Reliable data are essential to avoid miscalculations that could lead to risk of overfishing or underfishing of this important fish. Hilsa matures at 6–12 months, lives 2–6 years, feeds primarily on phytoplankton and spawns mostly during full moon of September and October. The abundance of brood hilsa in the river systems before and after the peak breeding season suggests further research is needed to refine breeding period for sustainable production. Although recent molecular studies have mapped the complete genome of hilsa, there remains a lack of comprehensive knowledge on its biology, ecology, conservation and life cycle—the key areas for sustainable catches and domestication. Enhancing global demand for this species requires value addition, such as removing sharp pin bones in the flesh. DoF has implemented various policies and projects, including establishment of sanctuaries to protect and conserve hilsa fisheries for sustainable exploitation. However, these measures have sparked controversy due to their adverse impacts on income and livelihoods of fishermen. Addressing these challenges and knowledge gaps requires focused research and development initiatives to ensure sustainable hilsa fisheries in Bangladesh.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Socio-Demographic Factors and Handling Practices on Post-Harvest Fish Losses in Kakamega County's Cultured Tilapia Value Chain","authors":"James Adero Obar,&nbsp;Joseph Wafula Matofari,&nbsp;John Masani Nduko","doi":"10.1002/aff2.70034","DOIUrl":"https://doi.org/10.1002/aff2.70034","url":null,"abstract":"<p>Post-harvest fish losses (PHFL) significantly impact the aquaculture sector in Kenya, undermining food security and economic growth. This study investigated socio-demographic factors and handling practices influencing PHFL in Kakamega County's cultured tilapia value chain. Data were collected from 94 value chain actors operating across multiple nodes, including farming, processing and retail stages from six sub-counties using surveys and observations. Results revealed that 64% of participants were female, and 40.3% had completed high school, with only 26.6% holding valid food handler certificates. Household sizes mostly ranged from 4 to 9 members, and experience in the value chain varied, with 33% having 5–10 years of experience and 17% had over 21 years of experience. PHFL were significant across nodes, with farm gate losses highest in Butere (32%) and lowest in Likuyani (8.42%). Wholesale and retail losses were also notable, with Mumias East showing the highest overall losses. Regression analysis identified key predictors of PHFL, including poor sanitary conditions, lack of training, inadequate water quality and cooling practices, explaining 87.2% of the variance in PHFL. Experience negatively correlated with PHFL (<i>r</i> = −0.354, <i>p</i> &lt; 0.01), indicating that more experienced individuals incurred lower losses. Chi-square tests showed significant associations between PHFL and factors like household size, occupation, training and sanitation but not gender, education or age. The findings highlight the need for targeted interventions, including training programmes, infrastructure improvements and adherence to food safety standards, to minimise PHFL, improve fish quality and enhance food and nutrition security in Kakamega County.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine Vision Applications for Welfare Monitoring in Aquaculture: Challenges and Opportunities","authors":"Amy Fitzgerald,&nbsp;Christos C. Ioannou,&nbsp;Sofia Consuegra,&nbsp;Andrew Dowsey,&nbsp;Carlos Garcia de Leaniz","doi":"10.1002/aff2.70036","DOIUrl":"https://doi.org/10.1002/aff2.70036","url":null,"abstract":"<p>Increasing consideration of welfare in aquaculture has prompted interest in non-invasive methods of monitoring that avoid unnecessary stress and handling. Machine vision (MV) provides a potential solution to these needs, as it can be used for non-invasive monitoring of animal health and welfare in real-time. We examined the practical applications of MV for welfare monitoring in aquaculture, the hardware and algorithms used for automated data collection, and the main challenges and solutions for data processing and analysis. The most common application of MV has been the estimation of size-related metrics (growth, biomass) in fish, but key aspects of welfare, such as monitoring of parasites and disease or detection of stress-related behaviours, are lagging behind. Numerous camera setups have been used, ranging from single to stereoscopic cameras and from emersed to submerged cameras, but these have often been used under optimal conditions that may not always reflect those prevalent in industry (high densities, low visibility), likely overestimating performance. Object detection algorithms, such as YOLO, have been the approach of choice for most MV applications in aquaculture, but our review has identified an increasing number of alternatives that can help circumvent some of the challenges posed by high densities and poor lighting typical of commercial farms. MV has the potential to transform welfare monitoring in aquaculture, but there are still important challenges that need to be overcome before it can become mainstream, namely the ability to detect ectoparasites and diseases, identify abnormal behaviours, and work across taxa, particularly in crustaceans.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proliferative Kidney Disease in Sympatric Naturally Reproducing Populations of Rainbow and Brown Trout in Southern Peri-Alpine Germany","authors":"Albert Ros,&nbsp;Jan Baer,&nbsp;Patrick Bartolin,&nbsp;Alexander Brinker","doi":"10.1002/aff2.70035","DOIUrl":"https://doi.org/10.1002/aff2.70035","url":null,"abstract":"<p>The decline of central European salmonid populations is exacerbated by global warming impacts on disease and interspecific competition. In this context, sympatric naturally reproducing populations of rainbow trout <i>Oncorhynchus mykiss</i> and brown trout <i>Salmo trutta</i> were sampled in three rivers in southern Germany where the myxozoan parasite <i>T. bryosalmonae</i>, the causative agent of the temperature-associated proliferative kidney disease (PKD), is widely distributed. As expected, parasite prevalence and kidney hyperplasia increased from summer to autumn while decreasing with fish total length. Parasite infection intensity was greater in brown trout than in rainbow trout. With ongoing climate change, this difference in species vulnerability may lead to higher prevalence of PKD in brown trout creating a competitive disadvantage.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to Evaluation of Natural Mortality of an Unfished Gastropod (Buccinum undatum) Population Using Statolith Age-frequency Data in the Southern Mid-Atlantic Bight","authors":"","doi":"10.1002/aff2.70022","DOIUrl":"https://doi.org/10.1002/aff2.70022","url":null,"abstract":"<p><i>Citation</i> Borsetti S, Wiedenmann J, and Munroe D. 2022. “Evaluation of Natural Mortality of an Unfished Gastropod (<i>Buccinum undatum</i>) Population Using Statolith Age-Frequency Data in the Southern Mid-Atlantic Bight.” <i>Aquaculture, Fish and Fisheries</i> 2, no. 3 (May 23): 243–251. https://onlinelibrary.wiley.com/doi/10.1002/aff2.47 DOI: 10.1002/aff2.47</p><p><i>Description of error</i></p><p>Incorrect units were used when describing minimum landing sizes, specifically in the Methods and Results sections 2.3 and 3.3., as well as in Figure 4. The correct units for minimum landing size is millimeters (mm), not centimeters (cm). The correct units are reproduced below.</p><p><i>Methods 2.3. Fishing Mortality reference points</i> “Therefore, three selectivity curves were calculated using three different minimum landing sizes (45, 55, and 65 mm) consistent with sizes used in other countries (see Borsetti et al., 2018 for a review).”</p><p><i>Results 3.3. Fishing Mortality reference points</i> “The different minimum landing sizes (45, 55, and 65 mm) resulted in different age-based selectivity curves, with an age at 50% selection of approximately 3, 4, and 6 years old, respectively (Figure 4A). These selectivity curves, combined with the different values of <i>M</i> resulted in a range of SPR-curves and F_40% values (Figure 4B). For <i>M</i> = 0.45, the F_40% values were 0.29, 0.42, and 1.40 yr⁻¹ for the minimum size of 45, 55, and 65 mm, respectively. The corresponding estimates of <i>Z</i> (<i>M + F</i>) were 0.74, 0.87, and 1.85 yr⁻¹.Values of F_40% were higher using <i>M</i> = 0.6, with values of 0.38, 0.6, and 3.2 yr⁻¹ for the minimum size of 45, 55, and 65 mm, respectively. The corresponding estimates of <i>Z</i> with <i>M</i> = 0.6 were 1.03, 1.25, and 3.85 yr⁻¹.”</p><p>The authors apologize for these errors.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Various Feeding and Pond Fertilization Strategies on Nile Tilapia (Oreochromis niloticus L.) Production and the Selectivity for Natural Versus Supplementary Diet in Semi-Intensive Aquaculture Systems","authors":"Safina Musa,&nbsp;Christopher Mulanda Aura,&nbsp;Tumi Tomasson,&nbsp;Ólafur Sigurgeirsson,&nbsp;Godfrey Kawooya Kubiriza,&nbsp;Helgi Thorarensen","doi":"10.1002/aff2.70031","DOIUrl":"https://doi.org/10.1002/aff2.70031","url":null,"abstract":"<p>High feed costs constrain tilapia production, making exploring low-cost feeding strategies important. We assessed the growth of tilapia over a period of 6 months, fed 1%, 2%, or 4% of body mass day⁻¹ with and without fertilization in 18 liner ponds stocked with fingerlings (5.1 ± 0.71 g). Growth was significantly better in fertilized ponds than in unfertilized ponds. The best growth (320.7 ± 8.5 g) was in fertilized ponds where fish were fed 2%, achieving a 45% larger weight gain than in the group fed 4% in unfertilized ponds. These results show that with fertilization, the feeding can be reduced by half while still having better growth than in unfertilized ponds. In fertilized ponds fed 4%, the minimum nocturnal oxygen levels may have limited growth of the fish and, as a result, their final weight (180.1 ± 6.6 g) was lower than in groups fed 2% in fertilized ponds and 4% in unfertilized ponds. Fish up to 60–90 g rely mainly on zooplankton as a source of food, while fish of sizes ≥100 g rely mainly on supplementary feed. Analysis of the gut content of fish of different sizes suggested that tilapia up to 60–90 g do not consume the feed presented which instead ends up as an expensive form of fertilizer. The best economic return was in ponds that were fertilized and fed 2%. It is concluded that feed-use and production costs may be reduced even further by fertilizing the ponds and restricting or omitting feeding of fish &lt; 100 g and only commence feeding when the fish have reached around 100 g. The results of the finding have a wider applicability in developing countries where pond culture of tilapia is common.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of C/N Ratio for Bi-Culture of Litopenaeus vannamei (Boone, 1931) and Macrobrachium rosenbergii (de Man, 1879) in a Molasses Based Biofloc System","authors":"Md. Abdul Halim,&nbsp;Dania Aziz,&nbsp;Aziz Arshad,&nbsp;Nur Leena W. S. Wong,&nbsp;Murni Marlina Karim,&nbsp;Muhammad Fadhil Syukri Ismail,&nbsp;Md. Lifat Rahi","doi":"10.1002/aff2.70032","DOIUrl":"https://doi.org/10.1002/aff2.70032","url":null,"abstract":"<p>This study evaluated the effects of different C/N ratios (C10–N, C15–N, C20–N and C25–N, compared to C0–N as control) on growth, water quality, proximate composition, bacterial loads and total haemocyte counts (THCs) of shrimp (<i>Litopenaeus vannamei</i>) and prawn (<i>Macrobrachium rosenbergii</i>) post larvae in a biofloc-based nursery bi-culture system, aiming to optimize C/N ratios for sustainability and production efficiency over 6 weeks. Molasses was used as a carbon source, and water salinity was maintained at 15 ppt. In total, 15 cylindrical plastic tanks (125 L water-holding capacity, 59 cm × 56 cm) were used and filled up each 100 L water for rearing 1500 PL of the two species (750 <i>L</i>. <i>vannamei</i> and 750 <i>M</i>. <i>rosenbergii</i>). At the end of the experiment, significantly higher (<i>p</i> &lt; 0.05) specific growth rate (SGR, % per day) (9.77) and survivability (95.33%) for <i>L. vannamei</i> were recorded in C10–N compared to the other treatments. For <i>M. rosenbergii</i>, the significantly higher (<i>p</i> &lt; 0.05) SGR (% per day) (5.77) was recorded in C25–N, whereas the higher survival rate was found at C10–N (90.67%). The best feed conversion ratio was obtained at C10–N for <i>L. vannamei</i> (1.58), whereas for <i>M. rosenbergii</i>, it was obtained at C25–N (2.43). Significantly the higher (<i>p </i>&lt; 0.05) THCs (<i>L. vannamei </i>= 40.63 × 10⁵ and <i>M. rosenbergii</i> = 31.25 × 10⁵) of both species were obtained at C10–N. The experimental C–N ratios led to a significant increase (<i>p </i>&lt; 0.05) in total microbial loads (116.6–355 × 10⁹ CFU mL⁻¹) compared to the control (18.40 × 10⁶ CFU mL⁻¹). Moreover, all tested water quality parameters remained within the optimal range across the treatments. The study concluded that a C:N ratio of 10:1 provides the highest economic return, making it the optimal ratio for biofloc-based nursery bi-culture of <i>L. vannamei</i> and <i>M. rosenbergii</i>.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laligurans (Rhododendron arboreum) Enhances Growth, Enzyme Profiles, and Immune Response of Grass Carp Ctenopharyngodon idella (Val. 1844)","authors":"Anil Kumar Jha,&nbsp;Monowar Alam Khalid,&nbsp;Shyam Narayan Labh","doi":"10.1002/aff2.70029","DOIUrl":"https://doi.org/10.1002/aff2.70029","url":null,"abstract":"<p>This study evaluates the effects of Laligurans (<i>Rhododendron arboreum</i>) flowers on the growth performance and health parameters of grass carp (<i>Ctenopharyngodon idella</i>). Known for their anti-inflammatory properties and medicinal uses, Laligurans flowers were incorporated into diets as an ethanol extract (LGE) and fine powder (LGP) to test their efficacy. A total of 630 grass carp fingerlings (3.07 ± 0.76 g to 3.95 ± 0.85 g) were randomly distributed into 21 nylon cages (1.5 m × 1 m × 2 m) placed in an earthen pond. Seven dietary treatments were administered: a control diet (T1) with standard commercial feed, LGE-supplemented diets (T2, T3, T4, and T5) at 0.20%, 0.40%, 0.80%, and 1.60% inclusion levels, respectively, and LGP-supplemented diets (T6 and T7) at 0.20% and 0.40%, respectively. Results demonstrated significant improvements (<i>p</i> &lt; 0.05) in liver, kidney, and blood serum protein levels (total protein, albumin, globulin, and AG ratios) in treated groups compared to the control. Reductions in SGOT, SGPT, and ALP levels were observed in the liver and blood serum of treated groups, while control fish exhibited elevated blood urea nitrogen and creatinine. Fish fed LGE diets showed superior blood profiles compared to those receiving LGP. The T4 group (0.80% LGE) achieved the highest final weight gain, specific growth rate, and survival rate (<i>p</i> &lt; 0.05), highlighting the potential of Laligurans flower extract as a natural immunological and growth-enhancing supplement in aquaculture diets.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length at Age of Mottled Sculpin in a Regulated High-Elevation River","authors":"Alexandra L. Brown,&nbsp;Travis R. Hackett,&nbsp;Baylor K. Lynch,&nbsp;Brien P. Rose,&nbsp;Brett M. Johnson,&nbsp;Yoichiro Kanno","doi":"10.1002/aff2.70030","DOIUrl":"https://doi.org/10.1002/aff2.70030","url":null,"abstract":"<p>We characterized length-at-age relationships of mottled sculpin (<i>Cottus bairdii</i>) in the Lower Blue River, a regulated high-elevation river in the southern Rocky Mountain region, CO, USA. Sculpin was collected in May, August and October in a dry year and a wet year, and sagittal otoliths were sectioned for age estimation. Age-1 fish grew rapidly followed by slowed annual growth and a relatively long life span, with the oldest individual inferred to be 9 years old at 119 mm in total length. These patterns might be due to the altered flow regime characterized by hypolimnetic dam water release, resulting in suboptimal summer water temperatures for growth, oligotrophic conditions and low abundance of prey resources. Our study reports length-at-age relationships of a small-bodied species in an anthropogenically altered river, and additional research is warranted to compare their life history characteristics over space and time.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Health Monitoring of Invasive Pink Salmon Oncorhynchus gorbuscha in Norway in 2023","authors":"Åse Helen Garseth,&nbsp;Lisa Furnesvik,&nbsp;Kristoffer Vale Nielsen,&nbsp;Anne Berit Olsen,&nbsp;Julie Christine Svendsen,&nbsp;Torfinn Moldal","doi":"10.1002/aff2.70020","DOIUrl":"https://doi.org/10.1002/aff2.70020","url":null,"abstract":"<p>Since 2019, the Norwegian Veterinary Institute (NVI) has conducted health monitoring of pink salmon in Norway. The primary purpose of health monitoring has been to examine the presence of selected notifiable infections in pink salmon, but also to gain general knowledge regarding the health of pink salmon to inform assessments of risks to wild and farmed native salmonids. In 2023, post-mortem examinations were performed on 184 pink salmon captured in rivers Lakselv, Tana, Neiden, Komagelva, Kongsfjordelva and Karpelv in the County of Finnmark, Norway. Tissue samples from 161 of these were analysed with specific PCR assays aimed at detecting infectious salmon anaemia virus (ISAV), viral haemorrhagic septicaemia virus (VHSV), infectious hematopoietic necrosis virus (IHNV), piscine orthoreovirus genotype 1 (PRV-1) and <i>Renibacterium salmoninarum</i>. In addition, cultivation methods were applied to detect the presence of cultivable virus and bacteria. ISAV, VHSV, IHNV PRV-1 and <i>R. salmoninarum</i> were not detected by PCR. Furthermore, <i>R. salmoninarum, Aeromonas salmonicida</i> subsp. <i>salmonicida</i> and cultivable virus were not detected by cultivation. With the exception of the absence of PRV-1, the results correspond to previous years' health-monitoring projects.</p>","PeriodicalId":100114,"journal":{"name":"Aquaculture, Fish and Fisheries","volume":"4 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aff2.70020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142861844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}