• Title/Summary/Keyword: Atlantic salmon

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Nutritional Characteristics of Olive Flounder Paralichthys olivaceus, Red Sea Bream Pagrus major and Salmon Distributed in Korea as Commonly Consumed Sliced Raw Fish (국내 다소비 횟감용 어류인 광어(Paralichthys olivaceus), 참돔(Pagrus major) 및 연어류의 영양 특성)

  • Choe, Yu Ri;Lee, Chang Yong;Park, Ji Hoon;Lee, Jung Suck;Heu, Min Soo;Kim, Jin-Soo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.55 no.6
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    • pp.777-790
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    • 2022
  • This study was conducted to investigate the nutritional characteristics of the following Korean-distributed fish species commonly consumed as sliced raw fish (CC-SRF): olive flounder Paralichthys olivaceus (OF), red sea bream Pagrus major (RS), Atlantic salmon (AS), coho salmon (CS) and sockeye salmon (SS). The crude protein and lipid contents of OF, RS, AS, CS and SS were 20.2% and 5.5%, 21.2% and 6.8%, 17.7% and 18.5%, 18.3% and 16.1%, and 20.4% and 5.7%, respectively. Regardless of the type and weight of fish species, the major amino acids were leucine, lysine, aspartic acid, and glutamic acid, whereas histidine was identified as a limiting amino acid. The major minerals in all CC-SRF were P, K and Se based on the recommended daily intake or sufficient intake for Korean males aged between 19-49 years. Among the different types of all CC-SRF, the intake of OF and SS lipids is predicted to be associated with a lower n-6/n-3 fatty acid ratio, whereas among the free amino acids, which are expected to have health functionality, we identified taurine in OF and RS, and anserine in salmons. The digestibility of OF, RS, AS, CS and SS were 60.7%, 54.9%, 48.5%, 49.6%, and 53.4%, respectively.

Molecular Biological Studies on the Stress Protein HSP90$\beta$ Gene from Flounder (Paralichthys olivaceus) (넙치(Paralichthys olivaceus) HSP90$\beta$ 유전자의 분자생물학적 연구)

  • Lee, Jae-Hyeong;Kim, Yeong-Tae
    • Microbiology and Biotechnology Letters
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    • v.32 no.4
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    • pp.297-306
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    • 2004
  • Heat shock proteins (HSPs) were induced in cells in the thermal stress, and the HSP90 family is one of the major classes of HSPs. Gene encoding HSPs have been characterized from various mammals and piscine. We have cloned and sequenced the HSP90 cDNA from a brain cDNA library constructed from flounder (Paralichthys oliThe result of sequence analysis shows it to be the HSP90~. The nucleotide sequence of the HSP90$\beta$ was composed of 2791 long, encoding 726 amino acid residues. The flounder hsp90$\beta$ gene showed very high sequence homology with hsp90f3 of European sea bass (96.6%), zebrafish (92.9%), Atlantic salmon (92.0%) and human (89.5%). We also constructed a phylogenetic tree based on HSP90 amino acid sequences from vertebrate species. Gene-specific primers were selected and used in RT-PCR reactions to measure the basal hsp90$\beta$ mRNA. The hsp90f3 gene is constitutively expressed at a fairly high level in all examined tissues (brain, liver, kidney, muscle, and spleen). In order to express protein of flounder hsp90$\beta$ in E. coli, we used the His-tagged pETvector. Then, the expression of flounder HSP90$\beta$ was confirmed by Western blot analysis.

Effect of Water Temperature on the Expression of Stress Related Genes in Atlantic Salmon (Salmo salar) Fry (수온이 대서양 연어(Salmo salar) 치어의 체내 스트레스 관련 유전자 발현에 미치는 영향)

  • Kang, Hee Woong;Kim, Kwang Il;Lim, Hyun Jeong;Kang, Han Seung
    • Korean Journal of Environmental Biology
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    • v.36 no.2
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    • pp.131-139
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    • 2018
  • The warming of water as a result of climate change affects fish habitat. Variations in water temperature affect fish physiology almost totally. The rise in water temperature due to climate change leads to hypoxia following decreased oxygen solubility and decreased binding capacity of oxygen-carrying hemoglobin. This study was conducted to evaluate the health status of Atlantic salmon (Salmo salar) fry at elevated water temperatures($20^{\circ}C$) compared with optimum water temperature ($15^{\circ}C$). The method facilitated the detection of biomarker genes using NGS RNAseq analysis and evaluation of their expression pattern using RT-qPCR analysis. The biomarker genes included interferon alpha-inducible protein 27-like protein 2A transcript variant X3, protein L-Myc-1b-like, placenta growth factor-like transcript variant X1, fibroblast growth factor receptor-like 1 transcript variant X1, transferrin, intelectin, thioredoxin-like, c-type lectin lectoxin-Thr1-like, ladderlectin-like and calponin-1. The selected biomarker genes were sensitive to changes in water temperature based on NGS RNAseq analysis. The expression patterns of these genes based on RT-qPCR were similar to those of NGS RNAseq analysis.

Comparison of Hsp90 and CYP1A Expression Patterns by Water Temperature Stress in Atlantic Salmon (Salmo salar) (대서양 연어(Salmo salar)의 수온 스트레스에 의한 Hsp90 및 CYP1A 발현 양상 비교)

  • Kang, Han Seung;Song, Jae-Hee;Kang, Hee Woong
    • Journal of Marine Life Science
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    • v.3 no.2
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    • pp.51-58
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    • 2018
  • Variations in water temperature are known to affect almost every part of fish physiology. The rise in water temperature due to climate change can physically damage fish. This study was conducted to evaluate the health status of the Atlantic salmon (Salmo salar) at high water temperature (20℃) than the optimum water temperature (15℃). Liver tissue exerts important metabolic functions in thermal adaptation. Therefore, liver tissue was used in this study. The evaluation method is to develop the biomarker gene using NGS RNAseq analysis and to examine the expression pattern using RT-qPCR analysis. The NGS RNAseq analysis revealed 1,366 differentially expressed genes, among which 880 genes were increase expressed and 486 genes were decrease expressed. The biomarker genes are such as heat shock protein 90 alpha (Hsp90α), heat shock protein 90 beta (Hsp90β) and cytochrome P450 1A (CYP1A). The selected genes are sensitive to changes in water temperature through NGS RNAseq analysis. Expression patterns of these genes through RT-qPCR were similar to those of NGS RNAseq analysis. The results of this study can be applied to other fish species and it is considered to be useful industrially.

Molecular cloning and expression analysis of an interferon stimulated gene 15 from rock bream Oplegnathus fasciatus

  • Kim, Ju-Won;Kwon, Mun-Gyeong;Park, Myoung-Ae;Hwang, Jee-Youn;Park, Hyung-Jun;Baeck, Gun-Wook;Kim, Mu-Chan;Park, Chan-Il
    • Journal of fish pathology
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    • v.23 no.2
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    • pp.177-187
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    • 2010
  • The Interferon stimulated gene 15 (ISG15) is strongly induced in many cell types by IFNs, viral infections, and double-stranded RNA (poly I:C). The ISG15 homologue cDNA was isolated from the rock bream LPS stimulated leukocyte cDNA library. The rock bream ISG15 homologue was found to consist of 833 bp encoding 157 amino acid residues. Compared with other known ISG15 peptide sequences, the most conserved regions of the rock bream ISG15 peptide were found to be the tandem ubiquitin-like domains and a C-terminal LRLRGG conjugating motif, characteristic of mammalian and non-mammalian ISG15 proteins. Phylogenetic analysis based on the deduced amino acid sequence revealed a homologous relationship between the ISG15 sequence of rock bream and that of Atlantic salmon, Atlantic cod, northern snake head, black rockfish and olive flounder. The expression of the rock bream ISG15 molecule was induced in the peripheral blood leukocytes (PBLs) from 1 to 24 h following poly I:C stimulation, with a peak at 3 h post-stimulation. The rock bream ISG15 gene was predominantly expressed in the PBLs, spleen and gill.

Genetic identification of Aeromonas species using a housekeeping gene, rpoD, in cultured salmonid fishes in Gangwon-Do (강원도 양식 연어과 어류에서 분리된 에로모나스 종의 유전학적 동정)

  • Lim, Jongwon;Koo, Bonhyeong;Kim, Kwang Il;Jeong, Hyun Do;Hong, Suhee
    • Journal of fish pathology
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    • v.30 no.2
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    • pp.79-88
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    • 2017
  • At the present, fish farms are suffering a lot of economic losses due to infectious diseases caused by various pathogens including aeromonad. Aeromonad is ubiquitous bacteria that causes infectious diseases. At least 26 species in the genus Aeromonas have been reported to cause fatal infections not only in salmonid fishes, but also in other freshwater and seawater fishes. Molecular techniques based on nucleic acid sequences of 16S rDNA and housekeeping genes can be used to identify the Aeromonas species. In this study, The genus Aeromonas was isolated from salmonid fishes of sixteen fish farms in Gangwon-Do, Korea and phylogenetically identified based on the sequences of 16S rDNA and housekeeping genes for Aeromonad, i.e. RNA polymerase sigma factor ${\sigma}^{70}$ (rpoD) or DNA gyrase subunit B (gyrB). Consequently, 96 strains were collected from Atlantic salmon (Salmo salar), coho salmon (Oncorhynchus kisutch), masou salmon (Oncorhynchus masou) and rainbow trout (Oncorhynchus mykiss), and 36 isolates were identified as the genus Aeromonas by 16S rDNA analysis. Thirty six Aeromonad isolates were further analysed based on rpoD or gyrB gene sequences and found Aeromonas salmonicida (24 isolates), A. sobria (10 isolates), A. media (1 isolates) and A. popoffii (1 isolates), indicating that A. salmonicida is a main infectious bacteria in Salmonid fishes in Gangwon-Do. It was also proved that the phylogenetic identification of Aeromonas species based on the sequences of housekeeping gene is more precise than the 16S rDNA sequence.

Single and Multi-Strain Probiotics Supplementation in Commercially Prominent Finfish Aquaculture: Review of the Current Knowledge

  • Sumon, Md Afsar Ahmed;Sumon, Tofael Ahmed;Hussain, Md. Ashraf;Lee, Su-Jeong;Jang, Won Je;Sharifuzzaman, S.M.;Brown, Christopher L.;Lee, Eun-Woo;Hasan, Md. Tawheed
    • Journal of Microbiology and Biotechnology
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    • v.32 no.6
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    • pp.681-698
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    • 2022
  • The Nile tilapia Oreochromis niloticus, Atlantic salmon Salmo salar, rainbow trout Oncorhynchus mykiss, olive flounder Paralichthys olivaceus, common carp Cyprinus carpio, grass carp Ctenopharyngodon idella and rohu carp Labeo rohita are farmed commercially worldwide. Production of these important finfishes is rapidly expanding, and intensive culture practices can lead to stress in fish, often reducing resistance to infectious diseases. Antibiotics and other drugs are routinely used for the treatment of diseases and sometimes applied preventatively to combat microbial pathogens. This strategy is responsible for the emergence and spread of antimicrobial resistance, mass killing of environmental/beneficial bacteria, and residual effects in humans. As an alternative, the administration of probiotics has gained acceptance for disease control in aquaculture. Probiotics have been found to improve growth, feed utilization, immunological status, disease resistance, and to promote transcriptomic profiles and internal microbial balance of host organisms. The present review discusses the effects of single and multi-strain probiotics on growth, immunity, heamato-biochemical parameters, and disease resistance of the above-mentioned finfishes. The application and outcome of probiotics in the field or open pond system, gaps in existing knowledge, and issues worthy of further research are also highlighted.

Expression of HSP90, HSP70 mRNA and Change of Plasma Cortisol and Glucose During Water Temperature Rising in Freshwater Adapted Black Porgy, Acanthopagrus schlegeli (담수 사육 감성돔, Acanthopagrus schlegeli의 수온 상승에 따른 HSP90, HSP70 mRNA의 발현 및 혈장 cortisol과 glucose 변화)

  • Choi, Cheol-Young;Min, Byung-Hwa;Kim, Na-Na;Cho, Sung-Hwoan;Chang, Young-Jin
    • Journal of Aquaculture
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    • v.19 no.4
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    • pp.315-322
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    • 2006
  • The objective of the present study was to investigate the expression of heat shock protein 90 (HSP90) and 70 (HSP70) mRNA as cellular stress responses, the levels of plasma cortisol with glucose as neuro-endocrine stress responses during water temperature rising in freshwater adapted black porgy, Acanthopagrus schlegeli. A cDNA fragment of 891 (HSP90) and 465 (HSP70) bp was cloned from black porgy testis by Reverse transcription-polymerase chain reaction (RT-PCR) with primers designed from the conserved regions of other teleost. The PCR product of HSP90 showed very high homology to red seabream (99%), rainbow trout (95%), Atlantic salmon (94%), zebrafish (94%) HSP90, HSP70 of black porgy was also highly similar to those of rainbow trout (96%), silver seabream (95%), zebrafish (95%) HSP70. Water temperature rising ($20{\sim}30^{\circ}C$) induced elevation of HSP90 mRNA in black porgy gonad, liver, brain, intestine and kidney, whereas it resulted in an induction of the HSP70 mRNA expression in gonad only. Plasma cortisol levels increased significantly at $30^{\circ}C$ in the fish compared to those at $20^{\circ}C$. Glucose levels of the fish showed a tendency of co-increase with cortisol during water temperature rising. These results suggest that increased HSP90 mRNA in liver with plasma cortisol following heat shock may be related to increasing glucose for homeostasis in this species.