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Y Schnytzer, N Simon-Blecher, J Li, H Waldman Ben-Asher, M Salmon-Divon, Y Achituv, M E Hughes, O Levy
Intertidal inhabitants are exposed to the 24-hour solar day, and the 12.4 hour rising and falling of the tides. One or both of these cycles govern intertidal organisms' behaviour and physiology, yet little is known about the molecular clockworks of tidal rhythmicity. Here, we show that the limpet Cellana rota exhibits robust tidally rhythmic behaviour and gene expression. We assembled a de-novo transcriptome, identifying novel tidal, along with known circadian clock genes. Surprisingly, most of the putative circadian clock genes, lack a typical rhythmicity...
March 20, 2018: Scientific Reports
A H Fullerton, C E Torgersen, J J Lawler, E A Steel, J L Ebersole, S Y Lee
Climate-change driven increases in water temperature pose challenges for aquatic organisms. Predictions of impacts typically do not account for fine-grained spatiotemporal thermal patterns in rivers. Patches of cooler water could serve as refuges for anadromous species like salmon that migrate during summer. We used high-resolution remotely sensed water temperature data to characterize summer thermal heterogeneity patterns for 11,308 km of 2nd - to 7th -order rivers throughout the Pacific Northwest and northern California (USA)...
January 1, 2018: Aquatic Sciences
Bertil Damato, Laura Hope-Stone, Bruce Cooper, Steve Brown, Peter Salmon, Heinrich Heimann, Laura Dunn
PURPOSE: To test the hypothesis that patients treated with radiotherapy for choroidal melanoma enjoy better quality of life (QoL) than patients who have undergone enucleation. METHODS: In this non-randomized study, patients with choroidal melanoma treated at the Royal Liverpool University Hospital, UK, were invited to complete QoL questionnaires approximately six months post-operatively and then on each anniversary of their primary treatment. These instruments consisted of the European Organization for Research and Treatment of Cancer (EORTC)-QLQ_OPT30 questionnaire, Hospital Anxiety & Depression Scale (HADS), and the Functional Assessment of Cancer Treatment (FACT-G) questionnaire...
March 16, 2018: American Journal of Ophthalmology
Wen Shi, Yuting Wang, Xuanyu Ren, Shuai Gao, Xiaojing Hua, Mengting Guo, Lijie Tang, Yigang Xu, Tong Ren, Yijing Li, Min Liu
Salmonid alphaviruses (SAVs), which include the etiological agents of salmon pancreas disease (PD) and sleeping disease (SD), are significant viral pathogens of European salmonid aquaculture, resulting in substantial economic losses to the salmonid-farming industry. Even though many countries including China have not reported the presence of SAV infections, these countries may be seriously threatened by these diseases as the salmon fish import trade increases. Thus, it is indeed necessary to develop efficient detection methods for the diagnosis and prevention of SAV infection...
March 16, 2018: Molecular and Cellular Probes
Stephanie Wong, Muireann Irish, Michael Hornberger
No abstract text is available yet for this article.
February 27, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Cliona M McHale, Gwendolyn Osborne, Rachel Morello-Frosch, Andrew G Salmon, Martha S Sandy, Gina Solomon, Luoping Zhang, Martyn T Smith, Lauren Zeise
Research on disease causation often attempts to isolate the effects of individual factors, including individual genes or environmental factors. This reductionist approach has generated many discoveries, but misses important interactive and cumulative effects that may help explain the broad range of variability in disease occurrence observed across studies and individuals. A disease rarely results from a single factor, and instead results from a broader combination of factors, characterized here as intrinsic (I) and extrinsic (E) factors...
January 2018: Mutation Research
Jenifer K McIntyre, Jessica I Lundin, James R Cameron, Michelle I Chow, Jay W Davis, John P Incardona, Nathaniel L Scholz
Adult coho salmon (Oncorhynchus kisutch) prematurely die when they return from the ocean to spawn in urban watersheds throughout northwestern North America. The available evidence suggests the annual mortality events are caused by toxic stormwater runoff. The underlying pathophysiology of the urban spawner mortality syndrome is not known, and it is unclear whether closely related species of Pacific salmon are similarly at risk. The present study co-exposed adult coho and chum (O. keta) salmon to runoff from a high traffic volume urban arterial roadway...
March 16, 2018: Environmental Pollution
Ali Mahdavi Fard, Leili Pourafkari, Nader D Nader
No abstract text is available yet for this article.
March 14, 2018: QJM: Monthly Journal of the Association of Physicians
Aimee H Fullerton, Brian J Burke, Joshua J Lawler, Christian E Torgersen, Joseph L Ebersole, Scott G Leibowitz
It is generally accepted that climate change will stress coldwater species like Pacific salmon. However, it is unclear what aspect of altered thermal regimes (e.g., warmer winters, springs, summers, or increased variability) will have the greatest effect, and what role the spatial properties of river networks play. Thermally diverse habitats may afford protection from climate change by providing opportunities for aquatic organisms to find and use habitats with optimal conditions for growth. We hypothesized that climate-altered thermal regimes will change growth and timing of life history events such as emergence or migration but that changes will be moderated in topologically complex stream networks where opportunities to thermoregulate are more readily available to mobile animals...
December 22, 2017: Ecosphere
A Muniesa, J Escobar-Dodero, N Silva, P Henríquez, P Bustos, A M Perez, F O Mardones
This short communication investigated in vitro differences between commercial disinfectants types (n = 36), doses of application, and time of action in the elimination of Piscirickettsia salmonis, the most important bacterium affecting farmed salmon in Chile. Seven different treatments were examined, including active and inactive chlorine dioxides, glutaraldehyde, hypochlorite disinfectants and detergents, peracetic acid, peroxides and other miscellaneous methods A 3 replicate set of each of the sample groups was stored at 20 °C and 95% relative humidity and retested after 1, 5 and 30 min with varying doses (low, recommended and high doses)...
March 8, 2018: Preventive Veterinary Medicine
Jiaqiang Luo, Cheryl Taylor, Thomas Nebl, Ken Ng, Louise E Bennett
Animal and aquatic meats represent important sources of dietary protein and micro-nutrients. Although red and processed meats carry some risks for human health, sensory and nutritional advantages drive meat consumption. Therefore, it is important to understand how meat processing and cooking influence healthiness. The research aim was to investigate relationships of meat composition (proximates, amino acids and minerals) and cooking conditions (raw, 90 s microwave, 200 °C oven for 10 or 30 min) on protein digestibility, for a selection of four animal (beef, chicken, pork, kangaroo) and four aquatic meats (salmon, trout, prawn, oyster)...
July 15, 2018: Food Chemistry
Amaris Castanon, Grant Pierre, Rohan Willis, E Nigel Harris, Elizabeth Papalardo, Zurina Romay-Penabad, Alvaro Schleh, Praveen Jajoria, Monica Smikle, Karel DeCeulaer, Anne Tebo, Troy Jaskowski, Marta M Guerra, D Ware Branch, Jane E Salmon, Michelle Petri, Emilio B Gonzalez
Objectives: We evaluate the performance characteristics of antiphosphatidylserine (anti-PS), antiphosphatidylinositol (anti-PI), and antiphospholipid mixture (APhL) enzyme-linked immunosorbent assays (ELISAs) compared with anticardiolipin (aCL) and anti-β2 glycoprotein I (anti-β2GPI) in a large group of patients with antiphospholipid (aPL)-related diseases. Methods: Serum samples from 548 patients from the Hopkins and Jamaican systemic lupus erythematosus cohorts, the PROMISSE cohort, and the Antiphospholipid Standardization Laboratory were examined for immunoglobulin G (IgG)/immunoglobulin M (IgM) positivity in aCL, anti-β2GPI, anti-PS, anti-PI, and APhL ELISA assays...
March 14, 2018: American Journal of Clinical Pathology
Veronika Sele, Robin Ørnsrud, Jens J Sloth, Marc H G Berntssen, Heidi Amlund
Selenium (Se) is an essential element for animals, including fish. Due to changes in feed composition for Atlantic salmon (Salmo salar), it may be necessary to supplement feeds with Se. In the present work, the transfer of Se and Se species from feed to muscle of Atlantic salmon fed Se supplemented diets was studied. Salmon were fed basal fish feed (0.35 mg Se/kg and 0.89 mg Se/kg feed), or feed supplemented either with selenised yeast or sodium selenite, at low (1-2 mg Se/kg feed) and high (15 mg Se/kg feed) levels, for 12 weeks...
May 2018: Journal of Trace Elements in Medicine and Biology
T P Loch, M Faisal
Flavobacterial diseases are significant impediments to hatchery-based fishery conservation and aquaculture productivity worldwide. Recent studies revealed a multitude of novel flavobacteria within the reproductive fluids and unfertilized eggs of feral Chinook salmon Oncorhynchus tshawytscha broodstock, some of which were associated with systemic disease. Herein, embryonated eggs/fry from these broodstock were assayed for flavobacteria while in incubator stacks in three hatcheries over 2 years, as was the water entering hatchery incubators...
March 15, 2018: Journal of Fish Diseases
Mitsutoshi Nakano, Yoshimasa Sagane, Ryosuke Koizumi, Yozo Nakazawa, Masao Yamazaki, Toshihiro Watanabe, Katsumi Takano, Hiroaki Sato
This article describes the analysis of volatile compounds in fermented materials used for salmon fish sauce production via gas chromatography/mass spectrometry (GC/MS). Ten types of fish sauces were produced from raw salmon materials, including various proportions of flesh, viscera, inedible portion (heads, fins, and backbones), and soft roe, by mixing them with salt and allowing them to ferment for up to three months. The volatile compounds were captured by a solid-phase microextraction method and then applied to GC/MS for separation and identification of the compounds in the fish sauce products...
February 2018: Data in Brief
Martin A Stapanian, Charles P Madenjian, Stuart A Batterman, Sergei M Chernyak, William H Edwards, Peter B McIntyre
We tested the hypothesis of the proportion of higher chlorinated biphenyl (PCB) congeners increasing with increasing trophic level by comparing the respective PCB homologue distributions in an omnivore, white sucker ( Catostomus commersoni), and a top predator, coho salmon ( Oncorhynchus kisutch), from Lake Michigan. Adult females had the same congener and homologue proportions of total PCB concentration (ΣPCB) as adult males in both species. Hexachlorinated congeners comprised the largest proportion (32%) found in white sucker, followed by heptachlorinated (21%) and octochlorinated (18%) congeners...
March 14, 2018: Environmental Science & Technology
J D Armstrong, S McKelvey, G W Smith, P Rycroft, R J Fryer
Groups of wild-reared Atlantic salmon Salmo salar smolts were captured during their seaward migration on a tributary of the River Conon, Scotland, U.K., from 1999 to 2014 and tagged with passive integrated transponders (PIT). Fish that subsequently returned to the river after growing at sea were recorded automatically by a PIT-detector in a fish pass. Return rate was related directly to length and condition and inversely to day of the year that the smolt was tagged. Over years, as the study progressed, there was a significant increase in the proportion of smolts returning after two or more years at sea and no trend in returns of salmon having spent one winter at sea...
March 2018: Journal of Fish Biology
E Cauwelier, D C Stewart, C P Millar, J Gilbey, S J Middlemas
The aim of this study was to examine the genetic structuring, based on c. 4300 single nucleotide polymorphic markers, of juvenile Atlantic salmon Salmo salar sampled from 11 rivers in north-east Scotland, which form part of a radial drainage system. Within this area, sites in the upper mountainous and lower coastal sections of the different rivers were more closely related than sites from the upper and lower sections of the same river. Differentiation between fish from upper and lower sections was related to both distance from the sea and elevation, which were themselves correlated...
March 2018: Journal of Fish Biology
S D Gregory, J D Armstrong, J R Britton
A general framework is presented that should enhance our understanding of how intrinsic factors, such as body size, and extrinsic factors, such as climate, affect the dynamics and demographics of fish populations. Effects of intrinsic factors, notably studies relating juvenile Atlantic salmon Salmo salar body size to their probability to return as an adult, are often context-dependent and anecdotal, due to data constraints. By merit of its flexible specification, this framework should admit datasets with a range of situation-specific nuances, collected using different approaches, and thereby deliver more general and robust findings for more effective population management...
March 2018: Journal of Fish Biology
R Brackley, M C Lucas, R Thomas, C E Adams, C W Bean
This study assessed the usefulness of passing euthanized Atlantic salmon Salmo salar smolts through an Archimedean screw turbine to test for external damage, as compared with live, actively swimming smolts. Scale loss was the only observed effect. Severe scale loss was 5·9 times more prevalent in euthanized turbine-passed fish (45%) than the live fish (7·6%). Additionally, distinctive patterns of scale loss, consistent with grinding between the turbine helices and housing trough, were observed in 35% of euthanized turbine-passed smolts...
March 14, 2018: Journal of Fish Biology
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