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1

Todd, C. D., A. M. Walker, M. G. Ritchie, J. A. Graves, and A. F. Walker. "Population genetic differentiation of sea lice (Lepeophtheirus salmonis) parasitic on Atlantic and Pacific salmonids: analyses of microsatellite DNA variation among wild and farmed hosts." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 7 (2004): 1176–90. http://dx.doi.org/10.1139/f04-069.

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The copepod Lepeophtheirus salmonis is ectoparasitic on Atlantic and Pacific wild salmonids. It is a major pest to Atlantic salmon (Salmo salar) aquaculture and may be implicated in recent declines of certain European wild salmonid stocks. Variation at six microsatellite loci was assessed among L. salmonis from wild and farmed salmonids in Scotland, wild sea-run brown trout (Salmo trutta) in Norway, and farmed Atlantic salmon in eastern Canada. An outgroup North Pacific sample was obtained from farmed Atlantic salmon in British Columbia. No significant differentiation was found between L. salm
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2

Krueger, C. C., and B. May. "Ecological and Genetic Effects of Salmonid Introductions in North America." Canadian Journal of Fisheries and Aquatic Sciences 48, S1 (1991): 66–77. http://dx.doi.org/10.1139/f91-305.

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Stocking of non-native Salmoninae into North American waters began around 1870. Brown trout (Salmo trutta) from Europe established populations across North America and is the only successful inter-continental introduction. Introductions of native salmonids within North America but outside their native ranges have been common. Ecological effects of salmonid introductions. include competition, predation on native salmonids and other fishes, environmental modification through digging of redds in stream bottom substrates during spawning, and introduction of parasites and disease to native fish. Di
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3

Bui, Samantha, Elina Halttunen, Agnes M. Mohn, Tone Vågseth, and Frode Oppedal. "Salmon lice evasion, susceptibility, retention, and development differ amongst host salmonid species." ICES Journal of Marine Science 75, no. 3 (2017): 1071–79. http://dx.doi.org/10.1093/icesjms/fsx222.

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Abstract With different ecological characteristics amongst salmonid species, their response to parasitic infestation is likely to vary according to their spatial and temporal overlap with the parasite. This study investigated the host–parasite interactions amongst three species of salmonids and the ectoparasitic salmon louse, Lepeophtheirus salmonis. To determine any variation in infestation parameters amongst salmonids, single population groups of Atlantic salmon (Salmo salar), chinook salmon (Onchorhynchus tshawytscha), and previously-infested and naïve sea trout (Salmo trutta) were exposed
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4

Clusa, Laura, Alba Ardura, Sara Fernández, Agustín A. Roca, and Eva García-Vázquez. "An extremely sensitive nested PCR-RFLP mitochondrial marker for detection and identification of salmonids in eDNA from water samples." PeerJ 5 (February 28, 2017): e3045. http://dx.doi.org/10.7717/peerj.3045.

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BackgroundSalmonids are native from the North Hemisphere but have been introduced for aquaculture and sport fishing in the South Hemisphere and inhabit most rivers and lakes in temperate and cold regions worldwide. Five species are included in the Global Invasive Species Database: rainbow troutOncorhynchus mykiss, Atlantic salmonSalmo salar, brown troutSalmo trutta, brook troutSalvelinus fontinalis, and lake troutSalvelinus namaycush. In contrast, other salmonids are endangered in their native settings.MethodsHere we have developed a method to identify salmonid species directly from water samp
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5

Carril, Gabriela, Hanne C. Winther-Larsen, Marie Løvoll, and Henning Sørum. "Differential Transcriptomic Profile of Piscirickettsia salmonis LF-89 and EM-90 During an In Vivo Spatial Separation Co-Culture in Atlantic Salmon." Microorganisms 12, no. 12 (2024): 2480. https://doi.org/10.3390/microorganisms12122480.

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Salmonid rickettsial septicemia (SRS) is a critical sanitary problem in the Chilean aquaculture industry since it induces the highest mortality rate in salmonids among all infectious diseases. Piscirickettsia salmonis, a facultative intracellular bacterium, is the biological agent of SRS. In Chile, two genogroups of P. salmonis, designated as LF-89 and EM-90, have been identified. Previous studies suggested that their cohabitation triggers the expression of virulence effectors, which may be related to a higher pathogenicity in salmonids during co-infection with both P. salmonis genogroups. The
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6

Henríquez, Vitalia, María Verónica Rojas, and Sergio H. Marshall. "An Alternative Efficient Procedure for Purification of the Obligate Intracellular Fish Bacterial Pathogen Piscirickettsia salmonis." Applied and Environmental Microbiology 69, no. 10 (2003): 6268–71. http://dx.doi.org/10.1128/aem.69.10.6268-6271.2003.

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ABSTRACT Piscirickettsia salmonis is an obligate intracellular bacterial pathogen of salmonid fish and the etiological agent of the aggressive disease salmonid rickettsial syndrome. Today, this disease, also known as piscirickettsiosis, is the cause of high mortality in net pen-reared salmonids in southern Chile. Although the bacteria can be grown in tissue culture cells, genetic analysis of the organism has been hindered because of the difficulty in obtaining P. salmonis DNA free from contaminating host cell DNA. In this report, we describe a novel procedure to purify in vitro-grown bacteria
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7

Roby, Daniel D., Donald E. Lyons, David P. Craig, Ken Collis, and G. Henk Visser. "Quantifying the effect of predators on endangered species using a bioenergetics approach: Caspian terns and juvenile salmonids in the Columbia River estuary." Canadian Journal of Zoology 81, no. 2 (2003): 250–65. http://dx.doi.org/10.1139/z02-242.

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We estimated the consumption of juvenile salmonids (Oncorhynchus spp.) and other forage fishes by Caspian terns (Sterna caspia) nesting on Rice Island in the Columbia River estuary in 1997 and 1998 using a bioenergetics modeling approach. The study was prompted by concern that Caspian tern predation might be a substantial source of mortality to out-migrating juvenile salmonids from throughout the Columbia River basin, many populations of which are listed as threatened or endangered under the U.S. Endangered Species Act. The bioenergetics model used estimates of the energy requirements of the t
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8

Sittenthaler, Marcia, Lucia Koskoff, Kurt Pinter, Ursula Nopp-Mayr, Rosemarie Parz-Gollner, and Klaus Hackländer. "Fish size selection and diet composition of Eurasian otters (Lutra lutra) in salmonid streams: Picky gourmets rather than opportunists?" Knowledge & Management of Aquatic Ecosystems, no. 420 (2019): 29. http://dx.doi.org/10.1051/kmae/2019020.

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Knowledge on predator diet and drivers of prey selection is particularly of interest for an efficient management of predator and prey populations where predators potentially compete with humans for resources. Actual or perceived predation by Eurasian otter (Lutra lutra) on fish stocks generates conflicts in many countries. Recently, conflicts are heating up in riverine habitats, where multiple stressors affect stream fish populations. We combined dietary analysis of otter faeces and prey fish availability in three Austrian streams to assess spatial and seasonal differences in diet composition,
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9

Wood, C. C. "Predation of Juvenile Pacific Salmon by the Common Merganser (Mergus merganser) on Eastern Vancouver Island. I: Predation during the Seaward Migration." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 5 (1987): 941–49. http://dx.doi.org/10.1139/f87-112.

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Predation of juvenile salmonids by the common merganser (Mergus merganser) was investigated during the period of seaward migration in two streams where fish populations are enhanced by spawning channels and hatcheries. Observation of foraging behaviour and crop-gullet contents indicated that, during this period, mergansers foraging on freshwater reaches of the streams ate juvenile salmonids almost exclusively whereas those foraging on tidal waters rarely ate salmonids. Maximum rates of salmonid mortality were estimated by assessing merganser abundance and the pattern of foraging activity on fr
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10

Scrudato, Ronald J., and William H. McDowell. "Upstream Transport of Mirex by Migrating Salmonids." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 9 (1989): 1484–88. http://dx.doi.org/10.1139/f89-190.

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Mirex is a persistent chlorinated hydrocarbon found in appreciable concentrations in sediments and pelagic organisms of Lake Ontario. Concentrations are particularly high in introduced salmonids, which spawn in considerable numbers in tributaries of the Lake. We sampled the sediments and biota of several tributary streams in the Salmon River drainage basin. Greater concentrations of mirex were found in the resident brown trout (Salmo trutta) of tributaries accessible to migrating salmonids than in a nearby reference tributary inaccessible to migration. No significant differences in mirex conce
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11

Clark, Thomas C., Pierre Boudinot, and Bertrand Collet. "Evolution of the IRF Family in Salmonids." Genes 12, no. 2 (2021): 238. http://dx.doi.org/10.3390/genes12020238.

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Interferon regulatory factors (IRFs) as a family, are major regulators of the innate antiviral response in vertebrates principally involved in regulating the expression of interferons (IFNs) and interferon-stimulated genes (ISGs). To date, nine IRFs have been identified in mammals with a 10th member also found in several avian and fish species. Through genome mining and phylogenetic analysis, we identified and characterised 23 irf genes in 6 salmonid species. This larger repertoire of IRF in salmonids results from two additional whole-genome duplications which occurred in early teleosts and sa
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12

Buks, Ralfs, Abdo Alnabulsi, Rodanthi Zindrili, et al. "Catch of the Day: New Serum Amyloid A (SAA) Antibody Is a Valuable Tool to Study Fish Health in Salmonids." Cells 12, no. 16 (2023): 2097. http://dx.doi.org/10.3390/cells12162097.

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Serum amyloid A (SAA) proteins belong to a family of acute-phase reactants, playing an integral role in defending the organism from pathological damage. Despite a wealth of data on the regulation of SAA transcripts in teleosts, there is only limited information on these proteins’ abundance in fish. The aim of this study is to characterise SAA protein levels in salmonids using a newly developed antibody specific to salmonid SAA. The salmonid SAA antibody detected SAA and accurately discriminated between stimulated and control specimens from rainbow trout macrophage cell line (RTS-11) in vitro,
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13

Solé, Marta, Marc Lenoir, José-Manuel Fortuño, Steffen De Vreese, Mike van der Schaar, and Michel André. "Sea Lice Are Sensitive to Low Frequency Sounds." Journal of Marine Science and Engineering 9, no. 7 (2021): 765. http://dx.doi.org/10.3390/jmse9070765.

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The salmon louse Lepeophtheirus salmonis is a major disease problem in salmonids farming and there are indications that it also plays a role in the decline of wild salmon stocks. This study shows the first ultrastructural images of pathological changes in the sensory setae of the first antenna and in inner tissues in different stages of L. salmonis development after sound exposure in laboratory and sea conditions. Given the current ineffectiveness of traditional methods to eradicate this plague, and the strong impact on the environment these treatments often provoke, the described response to
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14

Railsback, Steven F., Bret C. Harvey, Sarah J. Kupferberg, Margaret M. Lang, Scott McBain, and Hart H. Welsh. "Modeling potential river management conflicts between frogs and salmonids." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 5 (2016): 773–84. http://dx.doi.org/10.1139/cjfas-2015-0267.

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Management of regulated rivers for yellow-legged frogs (Rana boylii) and salmonids exemplifies potential conflicts among species adapted to different parts of the natural flow and temperature regimes. Yellow-legged frogs oviposit in rivers in spring and depend on declining flows and warming temperatures for egg and tadpole survival and growth, whereas salmonid management can include high spring flows and low-temperature reservoir releases. We built a model of how flow and temperature affect frog breeding success. Its mechanisms include adults selecting oviposition sites to balance risks of egg
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15

Keeley, Ernest R., and James WA Grant. "Prey size of salmonid fishes in streams, lakes, and oceans." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 6 (2001): 1122–32. http://dx.doi.org/10.1139/f01-060.

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The growth rate of salmonid fishes is typically fastest in oceans, intermediate in lakes, and slowest in streams. We compiled literature data to test whether differences in the size of prey eaten by salmonids in the three habitats could account for these differences in growth rate (i.e., the prey-size hypothesis). In all three habitats, salmonid fishes exhibited ontogenetic niche shifts from feeding primarily on invertebrates when small to feeding on fishes when large. Contrary to the prey-size hypothesis, invertebrates eaten in streams were larger than those eaten in lakes or oceans, whereas
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16

Jansen, Peder A., Anja B. Kristoffersen, Hildegunn Viljugrein, Daniel Jimenez, Magne Aldrin, and Audun Stien. "Sea lice as a density-dependent constraint to salmonid farming." Proceedings of the Royal Society B: Biological Sciences 279, no. 1737 (2012): 2330–38. http://dx.doi.org/10.1098/rspb.2012.0084.

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Fisheries catches worldwide have shown no increase over the last two decades, while aquaculture has been booming. To cover the demand for fish in the growing human population, continued high growth rates in aquaculture are needed. A potential constraint to such growth is infectious diseases, as disease transmission rates are expected to increase with increasing densities of farmed fish. Using an extensive dataset from all farms growing salmonids along the Norwegian coast, we document that densities of farmed salmonids surrounding individual farms have a strong effect on farm levels of parasiti
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17

Vera-Escalona, Iván, Evelyn Habit, and Daniel E. Ruzzante. "Invasive species and postglacial colonization: their effects on the genetic diversity of a Patagonian fish." Proceedings of the Royal Society B: Biological Sciences 286, no. 1897 (2019): 20182567. http://dx.doi.org/10.1098/rspb.2018.2567.

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The present distribution of Patagonian species is the result of a complex history involving Quaternary refugial populations, Holocene range expansions and demographic changes occurring during the Anthropocene. Invasive salmonids were introduced in Patagonia during the last century, occupying most rivers and lakes, preying on and competing with native species, including the fishGalaxias platei. Here, we usedG. plateias a case study to understand how long-term (i.e. population differentiation during the Holocene) and short-term historical processes (salmonid introductions) affect genetic diversi
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18

Irabor, Arnold, SANUBI JOVITA, Pierre Hardin Aaron, and Nkeonyeasua Florence Olele. "THE UNIQUENESS OF THE SALMONIDS: A MINI-REVIEW ON ITS SMOLTIFICATION." FUDMA Journal of Agriculture and Agricultural Technology 9, no. 4 (2024): 99–107. http://dx.doi.org/10.33003/jaat.2023.0904.14.

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Smoltification in salmonids being a complex change engineered by its endocrine is geared towards the adaptive migration from freshwater into saltwater for development is a very important aspect in its life cycle. The understanding of this phenomenal is however paramount for the ensured optimal productivity and sustainability of this unique fish species (salmonids) in culture systems. Hence this study reviewed on the basic factors that influence the smoltification process as well as the relevance of the knowledge to salmonid farming.
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19

Marić, Ana, Ivan Špelić, Tena Radočaj, et al. "Changing climate may mitigate the invasiveness risk of non-native salmonids in the Danube and Adriatic basins of the Balkan Peninsula (south-eastern Europe)." NeoBiota 76 (October 3, 2022): 135–61. http://dx.doi.org/10.3897/neobiota.76.82964.

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Salmonids are an extensively hatchery-reared group of fishes that have been introduced worldwide mainly for their high commercial and recreational value. The Balkan Peninsula (south-eastern Europe) is characterised by an outstanding salmonid diversity that has become threatened by the introduction of non-native salmonids whose potential risk of invasiveness in the region remains unknown and especially so under predicted climate change conditions. In this study, 13 extant and four horizon non-native salmonid species were screened for their risk of invasiveness in the Danube and Adriatic basins
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Marić, Ana, Ivan Špelić, Tena Radočaj, et al. "Changing climate may mitigate the invasiveness risk of non-native salmonids in the Danube and Adriatic basins of the Balkan Peninsula (south-eastern Europe)." NeoBiota 76 (October 3, 2022): 135–61. https://doi.org/10.3897/neobiota.76.82964.

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Salmonids are an extensively hatchery-reared group of fishes that have been introduced worldwide mainly for their high commercial and recreational value. The Balkan Peninsula (south-eastern Europe) is characterised by an outstanding salmonid diversity that has become threatened by the introduction of non-native salmonids whose potential risk of invasiveness in the region remains unknown and especially so under predicted climate change conditions. In this study, 13 extant and four horizon non-native salmonid species were screened for their risk of invasiveness in the Danube and Adriatic basins
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21

Scrivener, J. Charles, Thomas G. Brown, and Bruce C. Andersen. "Juvenile Chinook Salmon (Oncorhynchus tshawytscha) Utilization of Hawks Creek, a Small and Nonnatal Tributary of the Upper Fraser River." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 5 (1994): 1139–46. http://dx.doi.org/10.1139/f94-113.

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Hawks Creek, a small tributary of the upper Fraser River where there is no record of spawning salmonids, was examined from May to November 1990 for the presence of juvenile salmonids. Age 0+ wild chinook salmon (Oncorhynchus tshawytscha) appeared in May, increased to peak densities of 0.76 fish∙m−2 in late August, and were absent in November. Average residence time of marked chinook juveniles was 9 d. Duration of residency was size dependent, as small fish remained longer than large fish. Rainbow trout (Oncorhynchus mykiss) and mountain whitefish (Prosopium williamsoni) also had a short reside
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22

Marshall, Sergio, Sekou Heath, Vitalia Henríquez, and Cristián Orrego. "Minimally Invasive Detection ofPiscirickettsia salmonis in Cultivated Salmonids via the PCR." Applied and Environmental Microbiology 64, no. 8 (1998): 3066–69. http://dx.doi.org/10.1128/aem.64.8.3066-3069.1998.

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ABSTRACT The attributes of the PCR allowed implementation of an assay for specific detection of Piscirickettsia salmonis from a few microliters of fish serum. This opens the way to less invasive modes of sampling for this microbial pathogen in salmonids.
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23

Sudhagar, Arun, Gokhlesh Kumar, and Mansour El-Matbouli. "The Malacosporean Myxozoan Parasite Tetracapsuloides bryosalmonae: A Threat to Wild Salmonids." Pathogens 9, no. 1 (2019): 16. http://dx.doi.org/10.3390/pathogens9010016.

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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 di
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24

Heuch, Peter Andreas, Aengus Parsons, and Karin Boxaspen. "Diel vertical migration: A possible host-finding mechanism in salmon louse (Lepeophtheirus salmonis) copepodids?" Canadian Journal of Fisheries and Aquatic Sciences 52, no. 4 (1995): 681–89. http://dx.doi.org/10.1139/f95-069.

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The vertical distribution of pelagic nauplii and copepodids of the salmon louse Lepeophtheirus salmonis Krøyer was studied in large enclosures in the sea. Copepodids, which infect salmonid hosts, displayed a distinct diel vertical migration pattern. They gathered near the surface during the day, and spread out into deeper layers at night. Nauplii showed only small differences in depth between night and day. Copepodid distribution seems to be controlled by light intensity; no effect of either salinity or temperature was found. This migration pattern, which is the reverse of that of wild salmoni
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25

Limburg, Karin E., and Mikael Elfman. "Patterns and magnitude of Zn:Ca in otoliths support the recent phylogenetic typology of Salmoniformes and their sister groups." Canadian Journal of Fisheries and Aquatic Sciences 67, no. 4 (2010): 597–604. http://dx.doi.org/10.1139/f10-014.

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Fish otolith chemistries are used to associate fishes with specific environments. However, otolith chemistry may also have potential as a tool in phylogenetic research, as demonstrated here in salmoniform fishes and related taxa. Two-dimensional maps of Zn:Ca otolith chemistry displayed annual oscillations in magnitude in members of the Salmoniformes (with salmons differing from whitefishes). These are also detectable in esocids, but not strongly in osmerids or in more distantly related taxa. Further, Zn:Ca magnitudes were highest in salmonids and declined in other taxa: salmonids (salmons, gr
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26

Imamura, Akio, Kana Hayami, Masayuki Sakata, and Toshifumi Minamoto. "Environmental DNA revealed the fish community of Hokkaido Island, Japan, after invasion by rainbow trout." Biodiversity Data Journal 8 (October 29, 2020): e56876. https://doi.org/10.3897/BDJ.8.e56876.

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In freshwater ecosystems, invasive salmonid fishes can have a significant impact on native fish species. Detecting the invasion and its negative effects is critical for the conservation of native fish communities. We examined the species composition and seasonal changes in the freshwater fish community, including salmonids, on the Kamikawa Plain, Hokkaido Island, Japan, using environmental DNA (eDNA) metabarcoding. We detected 23 fish species in 176 samples collected from 16 sites over 12 months (October 2018 – August 2019). Between 11 and 20 species were detected at each site, including five
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27

Velásquez, Felipe, Mateus Frazao, Arturo Diez, et al. "Salmon-IgM Functionalized-PLGA Nanosystem for Florfenicol Delivery as an Antimicrobial Strategy against Piscirickettsia salmonis." Nanomaterials 14, no. 20 (2024): 1658. http://dx.doi.org/10.3390/nano14201658.

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Salmonid rickettsial septicemia (SRS), caused by Piscirickettsia salmonis, has been the most severe health concern for the Chilean salmon industry. The efforts to control P. salmonis infections have focused on using antibiotics and vaccines. However, infected salmonids exhibit limited responses to the treatments. Here, we developed a poly (D, L-lactide-glycolic acid) (PLGA)-nanosystem functionalized with Atlantic salmon IgM (PLGA-IgM) to specifically deliver florfenicol into infected cells. Polymeric nanoparticles (NPs) were prepared via the double emulsion solvent-evaporation method in the pr
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28

Johnson, S. C., and L. J. Albright. "The developmental stages of Lepeophtheirus salmonis (Krøyer, 1837) (Copepoda: Caligidae)." Canadian Journal of Zoology 69, no. 4 (1991): 929–50. http://dx.doi.org/10.1139/z91-138.

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Lepeophtheirus salmonis (Copepoda: Caligoida) is an economically important marine ectoparasite of wild and pen-reared salmonids. The morphology of its developmental stages is described and compared with that of other species of Lepeophtheirus and Caligus. The development of L. salmonis is very similar to that reported for other Lepeophtheirus species. The appendages generally attain the adult condition and the sexes become distinguishable later in development than in Caligus species. At all developmental stages except the nauplius, L. salmonis can be distinguished from the co-occurring Caligus
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29

House, Robert A., and Paul L. Boehne. "The Effect of Stream Cleaning on Salmonid Habitat and Populations in a Coastal Oregon Drainage." Western Journal of Applied Forestry 2, no. 3 (1987): 84–87. http://dx.doi.org/10.1093/wjaf/2.3.84.

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Abstract Habitat conditions and use by anadromous salmonids were evaluated in five reaches of Upper Lobster Creek, a major stream system in the central Oregon Coast Range, to determine the effect of different levels of stream cleaning. Stream clearance associated with post-World War II logging practices and a 100-year flood event that occured in 1964 severely altered channel configurations and loading patterns of large woody debris. This caused the subsequent removal of log jams. An uncleaned reach had large amounts of woody debris and the highest density of pools, greatest percentage of off-c
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30

Dolganov, V. N. "Ecological evolution of salmonids." Izvestiya TINRO 204, no. 2 (2024): 276–94. http://dx.doi.org/10.26428/1606-9919-2024-204-276-294.

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For the first time, ecological evolution of salmonid fishes is analyzed using the method of historical biogeography, considering formation of ecology and reproductive biology for these species under planetary climatic and geological changes. Climate cooling in the Cenozoic and associated reconstruction of the food base for salmonids had a major impact on evolution of their ecology. This process began at the Asian coast of the North Pacific much earlier than at the American coast and was much more intense there. The salmonids developed marine and oceanic feeding that led to their stocks increas
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31

Gibeau, P., B. M. Connors, and W. J. Palen. "Run-of-River hydropower and salmonids: potential effects and perspective on future research." Canadian Journal of Fisheries and Aquatic Sciences 74, no. 7 (2017): 1135–49. http://dx.doi.org/10.1139/cjfas-2016-0253.

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The spatial footprint of individual run-of-river (RoR) hydropower facilities is smaller than reservoir-storage hydroelectric projects and their impacts to aquatic ecosystems are often assumed to be negligible. However, these effects are poorly understood, especially for salmonids whose freshwater habitat often overlaps with RoR hydropower potential. Flow regulation for RoR hydropower is unique in how it influences the seasonality and magnitude of flow diversion and because low-head dams can be overtopped at high flows. Based on a review of the primary literature, we identified three pathways o
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Lennox, Robert J., Ulrich Pulg, Brendan Malley, et al. "The various ways that anadromous salmonids use lake habitats to complete their life history." Canadian Journal of Fisheries and Aquatic Sciences 78, no. 1 (2021): 90–100. http://dx.doi.org/10.1139/cjfas-2020-0225.

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Despite the preponderance of exorheic lakes in rivers home to anadromous salmonids, little research has focused on how salmon, trout, and char use lakes as part of their anadromous life histories. The literature on this subject has so far revealed that some parr move into lakes to feed and grow before smoltification but that smolts moving through lakes tend to have high mortality in disproportion to what is observed in other habitats they migrate in or through. Adults have been observed using lakes for behavioural thermoregulation prior to spawning, and kelts of iteroparous species often explo
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Salisbury, S. J., and D. E. Ruzzante. "Genetic Causes and Consequences of Sympatric Morph Divergence in Salmonidae: A Search for Mechanisms." Annual Review of Animal Biosciences 10, no. 1 (2022): 81–106. http://dx.doi.org/10.1146/annurev-animal-051021-080709.

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Repeatedly and recently evolved sympatric morphs exhibiting consistent phenotypic differences provide natural experimental replicates of speciation. Because such morphs are observed frequently in Salmonidae, this clade provides a rare opportunity to uncover the genomic mechanisms underpinning speciation. Such insight is also critical for conserving salmonid diversity, the loss of which could have significant ecological and economic consequences. Our review suggests that genetic differentiation among sympatric morphs is largely nonparallel apart from a few key genes that may be critical for con
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Vollset, Knut Wiik, Robert J. Lennox, Eva B. Thorstad, et al. "Systematic review and meta-analysis of PIT tagging effects on mortality and growth of juvenile salmonids." Reviews in Fish Biology and Fisheries 30, no. 4 (2020): 553–68. http://dx.doi.org/10.1007/s11160-020-09611-1.

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Abstract A systematic review and meta-analysis was conducted to evaluate the appropriate tag:fish size ratio when tagging juvenile salmonids (genera Oncorhynchus, Salmo, and Salvelinus). The review yielded 18 publications with 211 control and treatment groups reporting results from laboratory studies on the effects of passive integrated transponder (PIT) tags, plus a small number of additional studies on acoustic transmitters. A meta-analysis of the PIT tagging studies showed significant heterogeneity among studies with respect to mortality. Meta-regression revealed that juvenile salmonid mort
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35

Spens, Johan, and John P. Ball. "Salmonid or nonsalmonid lakes: predicting the fate of northern boreal fish communities with hierarchical filters relating to a keystone piscivore." Canadian Journal of Fisheries and Aquatic Sciences 65, no. 9 (2008): 1945–55. http://dx.doi.org/10.1139/f08-103.

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We determine if lacustrine salmonids show large-scale patterns of coexistence with the keystone predator northern pike ( Esox lucius ) and test an approach to predict fish communities using coexistence rules set in the context of three hierarchical filters that a species must pass to be present. The mutually exclusive species distribution patterns that we detected among 1029 lakes were repeatedly verified from results of whole-lake interventions with rotenone and introductions. Essentially, pike did not coexist with self-sustaining salmonid populations in lakes. High connectivity to pike (deri
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36

Colautti, Robert I. "Are characteristics of introduced salmonid fishes biased by propagule pressure?" Canadian Journal of Fisheries and Aquatic Sciences 62, no. 4 (2005): 950–59. http://dx.doi.org/10.1139/f05-002.

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Many recent studies of nonindigenous species (NIS) have used life history and morphological characteristics of invaders to either (i) build statistical models that predict new invaders or (ii) test ecological and evolutionary hypotheses. However, species characteristics may be confounded if NIS are transported or introduced nonrandomly with respect to the chosen contrast group, which typically consists of native or globally available species. For example, deliberately introduced NIS are often chosen according to economic rather than ecological factors. Here, I use stocking records of salmonid
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37

Sullivan, Mario L., Yixin Zhang, and Timothy H. Bonner. "Terrestrial subsidies in the diets of stream fishes of the USA: comparisons among taxa and morphology." Marine and Freshwater Research 63, no. 5 (2012): 409. http://dx.doi.org/10.1071/mf11232.

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Terrestrial food subsidies are important energy sources to stream fishes worldwide. However, their importance is not fully understood, except perhaps for some salmonid communities. Using the published literature, we investigated patterns of fish taxonomy and jaw morphology in the consumption of terrestrial food subsidies by non-salmonid stream fishes in the USA. We hypothesised that: (1) in general, non-salmonid fishes would consume terrestrial food items to the same extent as salmonids; and (2) subsidy consumption would be associated with jaw morphology. Cyprinids and fundulids consumed terre
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38

Vehanen, Teppo, Tapio Sutela, and Ari Huusko. "Potential Impact of Climate Change on Salmonid Smolt Ecology." Fishes 8, no. 7 (2023): 382. http://dx.doi.org/10.3390/fishes8070382.

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The migratory life history of anadromous salmonids requires successful migration between nursery, feeding, and spawning habitats. Smolting is the major transformation anadromous salmonids undergo before migration to feeding areas. It prepares juvenile fish for downstream migration and their entry to seawater. We reviewed the effects of climate change on smolt ecology from the growth of juveniles in fresh water to early post-smolts in the sea to identify the potential effects of climate change on migratory salmonid populations during this period in their life history. The focus was especially o
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39

Marschall, Elizabeth A., Thomas P. Quinn, Derek A. Roff, et al. "A framework for understanding Atlantic salmon (Salmo salar) life history." Canadian Journal of Fisheries and Aquatic Sciences 55, S1 (1998): 48–58. http://dx.doi.org/10.1139/d98-007.

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We took a hierarchical approach to understanding Atlantic salmon (Salmo salar) life history patterns by first comparing salmonids to other teleosts, next comparing Atlantic salmon to other salmonids, and finally, mapping correlations among individual life history traits within Atlantic salmon. The combination of anadromy, large eggs, nest construction and egg burial by females, and large size at maturity differentiates salmonids from most other teleosts. Within the family Salmonidae, there is considerable variation in all traits but Atlantic salmon are generally in the middle of the range. Wit
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40

Wagner, Glenn N., Mark D. Fast, and Stewart C. Johnson. "Physiology and immunology of Lepeophtheirus salmonis infections of salmonids." Trends in Parasitology 24, no. 4 (2008): 176–83. http://dx.doi.org/10.1016/j.pt.2007.12.010.

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41

Muzzall, Patrick M. "Endohelminths of salmonids from two localities in eastern Lake Michigan, with emphasis on Echinorhynchus salmonis." Canadian Journal of Zoology 67, no. 6 (1989): 1604–7. http://dx.doi.org/10.1139/z89-227.

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Adult salmonids (101 chinook salmon, Oncorhynchus tshawytscha; 7 coho salmon, Oncorhynchus kisutch; 56 lake trout, Salvelinus namaycush; 6 steelhead, Salmo gairdneri; and 2 brown trout, Salmo trutta) were collected from eastern Lake Michigan (Ludington and Manistee, Michigan) in July–September 1986, and examined for helminths. Eight species (three Cestoda, three Nematoda, two Acanthocephala) were found in the digestive tract and other viscera. Echinorhynchus salmonis and Eubothrium salvelini were the most common helminths found. The intensity of E. salmonis significantly increased as chinook s
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42

Sutherland, Ben J. G., Jennifer M. Covello, Sarah E. Friend, et al. "Host–parasite transcriptomics during immunostimulant-enhanced rejection of salmon lice (Lepeophtheirus salmonis) by Atlantic salmon (Salmo salar)." FACETS 2, no. 1 (2017): 477–95. http://dx.doi.org/10.1139/facets-2017-0020.

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Salmon lice ( Lepeophtheirus salmonis) are important ectoparasites of wild and farmed salmonids and cause major losses to the salmon farming industry throughout the Northern Hemisphere. With the emergence of resistance to several commonly used parasiticides, novel control strategies and integration of multiple treatment options are needed, including host immunostimulation. Here, we investigate the effects of a functional feed containing a peptidoglycan and nucleotide formulation on L. salmonis infection of Atlantic salmon ( Salmo salar) by characterizing lice infection levels, the expression o
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Blumstein, Danielle M., Matthew A. Campbell, Matthew C. Hale, et al. "Comparative Genomic Analyses and a Novel Linkage Map for Cisco (Coregonus artedi) Provide Insights into Chromosomal Evolution and Rediploidization Across Salmonids." G3: Genes|Genomes|Genetics 10, no. 8 (2020): 2863–78. http://dx.doi.org/10.1534/g3.120.401497.

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Whole-genome duplication (WGD) is hypothesized to be an important evolutionary mechanism that can facilitate adaptation and speciation. Genomes that exist in states of both diploidy and residual tetraploidy are of particular interest, as mechanisms that maintain the ploidy mosaic after WGD may provide important insights into evolutionary processes. The Salmonidae family exhibits residual tetraploidy, and this, combined with the evolutionary diversity formed after an ancestral autotetraploidization event, makes this group a useful study system. In this study, we generate a novel linkage map for
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44

Linnansaari, Tommi, Antóin M. O’Sullivan, Cindy Breau, et al. "The Role of Cold-Water Thermal Refuges for Stream Salmonids in a Changing Climate—Experiences from Atlantic Canada." Fishes 8, no. 9 (2023): 471. http://dx.doi.org/10.3390/fishes8090471.

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Thermal refuges are becoming increasingly influential for dictating the population status and spatial distribution of cold-water stenotherm salmonids in the mid- to southern extent of their range. The global climate is predicted to continue to warm, and therefore, the overall thermal suitability of freshwater habitats for stream salmonids is predicted to decline in concert. However, stream and river thermal heterogeneity will offer considerable resiliency for these populations. Thermal refuges are formed by many physical processes; common natural refuges include cold tributary plumes, groundwa
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Ciepliński, Mateusz, Mariusz Kasprzak, Monika Grandtke, Marian J. Giertych, and Aleksandra Steliga. "Pattern of secondary infection with Saprolegnia spp. in wild spawners of UDN-affected sea trout Salmo trutta m. trutta (L.), the Słupia River, N Poland." Oceanological and Hydrobiological Studies 47, no. 3 (2018): 230–38. http://dx.doi.org/10.1515/ohs-2018-0022.

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Abstract Ulcerative dermal necrosis (UDN), a disease of unknown etiology affecting salmonids, has been observed in some rivers in the north of Poland since 2007. Fish affected by UDN die, inter alia, as a result of secondary infection caused by water molds from the Saprolegnia genus. UDN is considered to be an important factor affecting the decline of Polish salmonid populations observed in recent years. Patterns of secondary infection and differences between sexes in UDN-affected wild, adult sea trout (Salmo trutta m. trutta) during the 2014 and 2015 spawning season have been described on the
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46

Surma, Szymon, Evgeny Pakhomov, Brian Hunt, Genyffer Troina, Joanne Breckenridge, and Kerim Aydin. "Impacts of Hatchery Production on Natural-Run Salmon and Subarctic Pelagic Ecosystems." Technical Report, no. 23 (January 8, 2025): 41–45. https://doi.org/10.23849/npafctr23/l22-0sd.

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The pelagic phase of Pacific anadromous salmonid life cycles is crucial in regulating the growth and survival of these species, which are of vital ecological, economic, and cultural importance to North Pacific countries. However, ecological interactions among salmonids, as well as between Oncorhynchus spp. and their predators, prey, and competitors, in the pelagic ecosystems of the subarctic Pacific Ocean remain an area of active research.
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47

Lehnert, S. J., K. A. Christensen, W. E. Vandersteen, et al. "Carotenoid pigmentation in salmon: variation in expression at BCO2-l locus controls a key fitness trait affecting red coloration." Proceedings of the Royal Society B: Biological Sciences 286, no. 1913 (2019): 20191588. http://dx.doi.org/10.1098/rspb.2019.1588.

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Carotenoids are primarily responsible for the characteristic red flesh coloration of salmon. Flesh coloration is an economically and evolutionarily significant trait that varies inter- and intra-specifically, yet the underlying genetic mechanism is unknown. Chinook salmon ( Oncorhynchus tshawytscha ) represents an ideal system to study carotenoid variation as, unlike other salmonids, they exhibit extreme differences in carotenoid utilization due to genetic polymorphisms. Here, we crossed populations of Chinook salmon with fixed differences in flesh coloration (red versus white) for a genome-wi
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48

Gaffaroglu, Muhammet, Zuzana Majtánová, Radka Symonová, et al. "Present and Future Salmonid Cytogenetics." Genes 11, no. 12 (2020): 1462. http://dx.doi.org/10.3390/genes11121462.

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Salmonids are extremely important economically and scientifically; therefore, dynamic developments in their research have occurred and will continue occurring in the future. At the same time, their complex phylogeny and taxonomy are challenging for traditional approaches in research. Here, we first provide discoveries regarding the hitherto completely unknown cytogenetic characteristics of the Anatolian endemic flathead trout, Salmo platycephalus, and summarize the presently known, albeit highly complicated, situation in the genus Salmo. Secondly, by outlining future directions of salmonid cyt
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Deutschlander, Mark E., Danielle K. Greaves, Theodore J. Haimberger, and Craig W. Hawryshyn. "Functional mapping of ultraviolet photosensitivity during metamorphic transitions in a salmonid fish, Oncorhynchus mykiss." Journal of Experimental Biology 204, no. 14 (2001): 2401–13. http://dx.doi.org/10.1242/jeb.204.14.2401.

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SUMMARY Ultraviolet visual sensitivity appears to be reduced and, possibly, lost during smoltification in anadromous populations of salmonid fishes. Similar changes occur in non-anadromous salmonids over a mass range that is associated with smoltification in their anadromous conspecifics. However, in sexually mature adult salmonids, ultraviolet-sensitive cones are present in the dorso-temporal retina, suggesting that ultraviolet sensitivity (i) may be regained with sexual maturity or (ii) might never be completely lost. Both smoltification and the transition to sexual maturity are regulated, i
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MIKHEEV, V. N., A. F. PASTERNAK, and E. T. VALTONEN. "Host specificity of Argulus coregoni (Crustacea: Branchiura) increases at maturation." Parasitology 134, no. 12 (2007): 1767–74. http://dx.doi.org/10.1017/s0031182007003125.

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SUMMARYWe tested the hypothesis that host specificity in ectoparasites does not depend exclusively on the features of the host but also on surrounding habitats, using 2 fish ectoparasites, Argulus coregoni and A. foliaceus (Crustacea: Branchiura), occurring sympatrically in Finnish lakes. Although these parasites are considered to be of low specificity, we found that the larger of the 2 species, A. coregoni developed a pronounced preference for salmonid hosts at the beginning of maturation (defined by the presence of copulating specimens). Argulus foliaceus infects a much wider range of fish h
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