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https://www.readbyqxmd.com/read/28101948/influence-of-the-marine-feeding-area-on-the-muscle-and-egg-fatty-acid-composition-of-atlantic-salmon-salmo-salar-spawners-estimated-from-the-scale-stable-isotopes
#1
J Torniainen, M J Kainz, R I Jones, M Keinänen, P J Vuorinen, M Kiljunen
Fatty acids in muscle tissue and eggs of female Atlantic salmon Salmo salar spawners were analysed to evaluate the dietary quality of their final feeding areas in the Baltic Sea. The final likely feeding area was identified by comparing stable carbon and nitrogen isotope composition of the outermost growth region (final annulus) of scales of returned S. salar with that of reference S. salar caught from different feeding areas. Some overlap of stable-isotope reference values among the three areas, in addition to prespawning fasting, decreased the ability of muscle tri-acylglycerols to discriminate the final likely feeding area and the area's dietary quality...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28101914/prenatal-stress-exposure-generates-higher-early-survival-and-smaller-size-without-impacting-developmental-rate-in-a-pacific-salmon
#2
Pauline M Capelle, Christina A D Semeniuk, Natalie M Sopinka, John W Heath, Oliver P Love
Prenatal exposure to elevated glucocorticoids can act as a signal of environmental stress, resulting in modifications to offspring phenotype. While "negative" phenotypic effects (i.e., smaller size, slower growth) are often reported, recent research coupling phenotype with other fitness-related traits has suggested positive impacts of prenatal stress. Using captive Chinook salmon (Oncorhynchus tshawytscha), we treated eggs with biologically relevant cortisol levels-low (300 ng mL(-1) ), high (1,000 ng mL(-1) ), or control (0 ng mL(-1) )-to examine the early-life impacts of maternally transferred stress hormones on offspring...
January 18, 2017: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28100887/production-of-a-health-beneficial-food-emulsifier-by-enzymatic-partial-hydrolysis-of-phospholipids-obtained-from-the-head-of-autumn-chum-salmon
#3
A K M Azad Shah, Toshihiro Nagao, Hideyuki Kurihara, Koretaro Takahashi
Phospholipids and their partial hydrolysates, namely lysophospholipids (LPLs), have been widely used in food, pharmaceutical, and cosmetic products as highly efficient emulsifiers. This study was conducted to produce docosahexaenoic acid (DHA)-esterified LPLs by enzymatic modification of phospholipids obtained from the head of autumn chum salmon (Oncorhynchus keta). The emulsifying properties of the obtained LPLs were also evaluated. Two different types of substrates of salmon head phospholipids were prepared via silica gel and cold acetone precipitation...
January 18, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28100217/variation-in-branchial-expression-among-insulin-like-growth-factor-binding-proteins-igfbps-during-atlantic-salmon-smoltification-and-seawater-exposure
#4
Jason P Breves, Chelsea K Fujimoto, Silas K Phipps-Costin, Ingibjörg E Einarsdottir, Björn Thrandur Björnsson, Stephen D McCormick
BACKGROUND: In preparation for migration from freshwater to marine habitats, Atlantic salmon (Salmo salar L.) undergo smoltification, a transformation that includes the acquisition of hyposmoregulatory capacity. The growth hormone (Gh)/insulin-like growth-factor (Igf) axis promotes the development of branchial ionoregulatory functions that underlie ion secretion. Igfs interact with a suite of Igf binding proteins (Igfbps) that modulate hormone activity. In Atlantic salmon smolts, igfbp4,-5a,-5b1,-5b2,-6b1 and-6b2 transcripts are highly expressed in gill...
January 18, 2017: BMC Physiology
https://www.readbyqxmd.com/read/28099771/purging-putative-siblings-from-population-genetic-datasets-a-cautionary-view
#5
Robin S Waples, Eric C Anderson
: Interest has surged recently in removing siblings from population genetic datasets before conducting downstream analyses. However, even if the pedigree is inferred correctly, this has the potential to do more harm than good. We used computer simulations and empirical samples of coho salmon to evaluate strategies for adjusting samples to account for family structure. We compared performance in full samples and sibling-reduced samples of estimators of allele frequency (P), population differentiation (FST ), and effective population size (Ne )...
January 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28098849/no-evidence-for-mhc-class-ii-based-non-random-mating-at-the-gametic-haplotype-in-atlantic-salmon
#6
M Promerová, G Alavioon, S Tusso, R Burri, S Immler
Genes of the major histocompatibility complex (MHC) are a likely target of mate choice because of their role in inbreeding avoidance and potential benefits for offspring immunocompetence. Evidence for female choice for complementary MHC alleles among competing males exists both for the pre- and the postmating stages. However, it remains unclear whether the latter may involve non-random fusion of gametes depending on gametic haplotypes resulting in transmission ratio distortion or non-random sequence divergence among fused gametes...
January 18, 2017: Heredity
https://www.readbyqxmd.com/read/28098540/diphyllobothrium-nihonkaiense-tapeworm-larvae-in-salmon-from-north-america
#7
Roman Kuchta, Mikuláš Oros, Jayde Ferguson, Tomáš Scholz
Diphyllobothriosis is reemerging because of global importation and increased popularity of eating raw fish. We detected Diphyllobothrium nihonkaiense plerocercoids in the musculature of wild pink salmon (Oncorhynchus gorbuscha) from Alaska, USA. Therefore, salmon from the American and Asian Pacific coasts and elsewhere pose potential dangers for persons who eat these fish raw.
February 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28098502/united-kingdom-national-paediatric-bilateral-project-results-of-professional-rating-scales-and-parent-questionnaires
#8
H E Cullington, D Bele, J C Brinton, S Cooper, M Daft, J Harding, N Hatton, J Humphries, M E Lutman, J Maddocks, J Maggs, K Millward, G O'Donoghue, S Patel, K Rajput, V Salmon, T Sear, A Speers, A Wheeler, K Wilson
OBJECTIVES: This fourteen-centre project used professional rating scales and parent questionnaires to assess longitudinal outcomes in a large non-selected population of children receiving simultaneous and sequential bilateral cochlear implants. METHODS: This was an observational non-randomized service evaluation. Data were collected at four time points: before bilateral cochlear implants or before the sequential implant, one year, two years, and three years after...
January 18, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28097664/testing-mate-choice-and-overdominance-at-mh-in-natural-families-of-atlantic-salmon-salmo-salar
#9
C Tentelier, O Barroso-Gomila, O Lepais, A Manicki, I Romero-Garmendia, B M Jugo
This study aimed to test mate choice and selection during early life stages on major histocompatibility (MH) genotype in natural families of Atlantic salmon Salmo salar spawners and juveniles, using nine microsatellites to reconstruct families, one microsatellite linked to an MH class I gene and one minisatellite linked to an MH class II gene. MH-based mate choice was only detected for the class I locus on the first year, with lower expected heterozygosity in the offspring of actually mated pairs than predicted under random mating...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28095861/challenges-in-conducting-natural-experiments-in-parks-lessons-from-the-revamp-study
#10
Jenny Veitch, Jo Salmon, Billie Giles-Corti, David Crawford, Kate Dullaghan, Alison Carver, Anna Timperio
: Experimental evidence on the role of the built environment for promoting physical activity is important for informing how to create cities that promote active living. Parks provide opportunities for physical activity; however, there is little robust evidence on the impact of park refurbishment. Government agencies often modify parks, providing opportunities for natural experiment studies of these interventions. Such an opportunity was provided by the modification of a large park in Victoria, Australia in 2013 when the Recording and EValuating Activity in a Modified Park (REVAMP) study was established...
January 17, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28095345/forensic-assignment-to-geographic-origin-a-useful-tool-in-seafood-fraud-control
#11
J L Horreo, G Machado-Schiaffino, E García-Vázquez
Seafood fraud is an economically motivated and widely spread problem encompassing drastic consequences in both public health and species conservation. In Northern Spain, only the first Atlantic salmon (Salmo salar) catch of the angling season (named Campanu) can be sold. In the year 2011, an angler denounced it on regional Court claiming that the Campanu (which was sold in 6000€) was fraudulent because it had been caught from another river than the fisherman ("the seller") stated. Here, we report the first judicial case of application of geographical genetic assignment in a fish species in Spain...
January 10, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28091940/purification-and-sequence-characterization-of-chondroitin-sulfate-and-dermatan-sulfate-from-fishes
#12
Na Lin, Xiaoli Mo, Yang Yang, Hong Zhang
Chondroitin sulfate (CS) and dermatan sulfate (DS) were extracted and purified from skins or bones of salmon (Salmo salar), snakehead (Channa argus), monkfish (Lophius litulon) and skipjack tuna (Katsuwonus pelamis). Size, structural sequences and sulfate groups of oligosaccharides in the purified CS and DS could be characterized and identified using high performance liquid chromatography (HPLC) combined with Orbitrap mass spectrometry. CS and DS chain structure varies depending on origin, but motif structure appears consistent...
January 14, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28089922/x-linked-elliptocytosis-with-impaired-growth-is-related-to-mutated-ammecr1
#13
Lina Basel-Vanagaite, Nir Pillar, Ofer Isakov, Pola Smirin-Yosef, Irina Lagovsky, Naama Orenstein, Mali Salmon-Divon, Hannah Tamary, Tami Zaft, Lily Bazak, Joseph Meyerovitch, Tal Pelli, Shay Botchan, Luba Farberov, Daphna Weissglas, Noam Shomron
In this study, we report a family with X-linked recessive syndrome caused by mutated AMMECR1 and characterized by elliptocytosis with or without anemia, midface hypoplasia, proportionate short stature and hearing loss. Recently, mutations in AMMECR1 were reported in two maternal half-brothers, presenting with nephrocalcinosis, midface hypoplasia and, in one of the siblings, deafness and elliptocytosis. AMMECR1 gene is localized in the critical region of contiguous deletion syndrome on Xq22.3 implicated in Alport syndrome, mental retardation, midface hypoplasia, and elliptocytosis (AMME complex)...
January 9, 2017: Gene
https://www.readbyqxmd.com/read/28089867/attenuation-of-obesity-induced-inflammation-in-mice-orally-administered-with-salmon-cartilage-proteoglycan-a-prophylactic-agent
#14
Shouhei Hirose, Krisana Asano, Akio Nakane
Obesity is associated with chronic inflammation of adipose tissue and causes development of type 2 diabetes. M1 macrophage population was increased in adipose tissue of obese mouse. M1 macrophages induce insulin resistance through the secretion of proinflammatory cytokines. Our previous studies demonstrated that salmon cartilage proteoglycan (PG) suppresses excess inflammation in various mouse inflammatory diseases. In this study, we examined the effect of PG on type 2 diabetes using high-fat-diet (HFD) induced obese mouse model...
January 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28089856/erythrocyte-heat-shock-protein-responses-to-chronic-in-vivo-and-acute-in-vitro-temperature-challenge-in-diploid-and-triploid-salmonids
#15
Pillai V Saranyan, Neil W Ross, Tillmann J Benfey
This research investigated how ploidy level (diploid versus triploid) affects the heat shock protein (HSP) response in erythrocytes under different thermal stress regimes, both in vivo and in vitro, in Atlantic salmon (Salmo salar) and brook charr (Salvelinus fontinalis) in order to address the question of why triploids typically have reduced thermal tolerance. A preliminary study confirmed that identical volumes of diploid and triploid erythrocytes (which equates to a smaller number of larger cells for triploids compared to diploids) did not differ in total protein synthesis rates...
January 13, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28088581/a-stepwise-algorithm-using-a-at-a-glance-first-line-test-for-the-non-invasive-diagnosis-of-advanced-liver-fibrosis-and-cirrhosis
#16
Jérôme Boursier, Victor de Ledinghen, Vincent Leroy, Rodolphe Anty, Sven Francque, Dominique Salmon, Adrien Lannes, Sandrine Bertrais, Frederic Oberti, Isabelle Fouchard-Hubert, Paul Calès
BACKGROUND & AIMS: Chronic liver diseases (CLD) are highly frequent and thus mainly managed by non-hepatologists. Because they lack access to the best non-invasive tests of liver fibrosis, these physicians cannot accurately determine the disease severity and the need for referral to a hepatologist. We aimed to implement an algorithm, comprising a new first-line test usable by all physicians, for the detection of advanced liver fibrosis in all CLD patients. METHODS: Diagnostic study: 3,754 CLD patients with liver biopsy were 2:1 randomized into derivation and validation sets...
January 11, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28088362/molecular-characterization-of-a-novel-orthomyxovirus-from-rainbow-and-steelhead-trout-oncorhynchus-mykiss
#17
William N Batts, Scott E LaPatra, Ryan Katona, Eric Leis, Terry Fei Fan Ng, Marine S O Brieuc, Rachel B Breyta, Maureen K Purcell, Carla M Conway, Thomas B Waltzek, Eric Delwart, James R Winton
A novel virus, rainbow trout orthomyxovirus (RbtOV), was isolated in 1997 and again in 2000 from commercially-reared rainbow trout (Oncorhynchus mykiss) in Idaho, USA. The virus grew optimally in the CHSE-214 cell line at 15°C producing a diffuse cytopathic effect; however, juvenile rainbow trout exposed to cell culture-grown virus showed no mortality or gross pathology. Electron microscopy of preparations from infected cell cultures revealed the presence of typical orthomyxovirus particles. The complete genome of RbtOV is comprised of eight linear segments of single-stranded, negative-sense RNA having highly conserved 5' and 3'-terminal nucleotide sequences...
January 11, 2017: Virus Research
https://www.readbyqxmd.com/read/28087330/molecular-characterization-and-functional-analysis-of-a-salmon-louse-lepeophtheirus-salmonis-kr%C3%A3-yer-1838-heme-peroxidase-with-a-potential-role-in-extracellular-matrixes
#18
Aina-Cathrine Øvergård, Christiane Eichner, Frank Nilsen, Sussie Dalvin
Heme peroxidases are the most abundant type of peroxidase catalyzing a H2O2-dependent oxidation of a wide variety of substrates. They are involved in numerous processes like the innate immune response, hormone and prostaglandin synthesis and crosslinking of proteins within extracellular matrixes (ECM) as well as molecules within the cuticle and chorion of arthropods and nematodes. In the present study, a Lepeophtheirus salmonis heme peroxidase (LsHPX) 1 was characterized. Amino acids in the active site of heme peroxidases were conserved, and the predicted protein sequence showed the highest similarity to genes annotated as chorion peroxidases and genes suggested to be involved in cuticle hardening or adhesion...
January 10, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28085934/housing-systems-influence-gut-microbiota-composition-of-sows-but-not-of-their-piglets
#19
Tereza Kubasova, Lenka Davidova-Gerzova, Elodie Merlot, Matej Medvecky, Ondrej Polansky, Delphine Gardan-Salmon, Helene Quesnel, Ivan Rychlik
Different housing systems can be used in pig production and little is known about their effect on gut microbiota composition. In this study we characterized fecal microbiota by sequencing the rRNA genes in sows kept during gestation in conventional pens with a slatted floor and in enriched pens with a floor covered with deep straw. After farrowing, microbiota of 1- and 4-day-old piglets were also monitored. Microbiota of sows from the enriched system contained significantly more Prevotella, Parabacteroides, CF231, Phascolarctobacterium, Fibrobacter, Anaerovibrio and YRC22 and significantly less Lactobacillus, Bulleidia, Lachnospira, Dorea, Ruminococcus and Oscillospira than microbiota of sows from the conventional system...
2017: PloS One
https://www.readbyqxmd.com/read/28085023/preparation-of-antioxidant-peptides-from-salmon-byproducts-with-bacterial-extracellular-proteases
#20
Ribang Wu, Leilei Chen, Dan Liu, Jiafeng Huang, Jiang Zhang, Xiao Xiao, Ming Lei, Yuelin Chen, Hailun He
Bacterial extracellular proteases from six strains of marine bacteria and seven strains of terrestrial bacteria were prepared through fermentation. Proteases were analyzed through substrate immersing zymography and used to hydrolyze the collagen and muscle proteins from a salmon skin byproduct, respectively. Collagen could be degraded much more easily than muscle protein, but it commonly showed weaker antioxidant capability. The hydrolysate of muscle proteins was prepared with crude enzymes from Pseudoalteromonas sp...
January 11, 2017: Marine Drugs
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