red sea bream
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Food Control ◽  
2022 ◽  
Vol 132 ◽  
pp. 108545
Author(s):  
Ran Zhao ◽  
Weiliang Guan ◽  
Pingan Zheng ◽  
Fang Tian ◽  
Zhenzhe Zhang ◽  
...  

Aquaculture ◽  
2022 ◽  
Vol 546 ◽  
pp. 737368
Author(s):  
Amal Biswas ◽  
Yuta Takahashi ◽  
Hideo Araki ◽  
Tetsuo Sakata ◽  
Toshihiro Nakamori ◽  
...  

2021 ◽  
Vol 8 (4) ◽  
pp. 2235-2247
Author(s):  
Nur Rachmat ◽  
Yohannes Yohannes ◽  
Adhytio Mahendra

Ikan merupakan hewan vertebrata yang hidup di dalam air. Ikan memiliki insang yang berfungsi sebagai alat pernapasan untuk mengambil oksigen dalam air dan sirip digunakan untuk berenang. Dalam kelompok hewan vertebrata, ikan memiliki jumlah terbesar diperkirakan 40.000 spesies, sementara yang tercatat hingga saat ini sekitar 25.000. Terdapat sekitar 13.630 spesies ikan yang berada di perairan laut, dikarenakan hampir 70% permukaan bumi terdiri dari air laut dan perairan tawar hanya sekitar 1% saja. Penelitian ini menggunakan citra ikan laut yang diambil dari public dataset yang memiliki 7 jenis ikan laut dimana setiap jenis ikan laut ada 7.000 gambar yang akan dilakukan tahap segmentasi warna HSV dengan mengambil nilai value sehingga menjadi grayscale yang akan dilanjutkan ke proses HOG dan untuk mengklasifikasikan jenis ikan laut menggunakan SVM. Untuk teknik pengujian dan pembagian dataset menggunakan metode Fold Cross Validation jenis Leave One Out (LOO). Berdasarkan hasil pengujian klasifikasi SVM baik kernel linear maupun polynomial dengan menggunakan 3-Fold, 4-Fold, dan 5-Fold. Accuracy tertinggi jenis ikan Black Sea Sprat senilai 94,06%. Untuk jenis ikan Gilt Head Bream tertinggi didapat senilai 94,31%. Selanjutnya jenis ikan Hourse Mackerel mendapatkan nilai accuracy tertinggi 94,74%. Kemudian jenis ikan Red Mullet nilai accuracy tertinggi sebesar 94,76%. Selanjutnya jenis ikan Red Sea Bream memperoleh nilai accuracy tertinggi 94,86%, jenis ikan Sea Bass yang dengan nilai accuracy tertinggi 77,86% dan ikan Striped Red Mullet memperoleh nilai accuracy tertinggi 94,41%.


Fishes ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 82
Author(s):  
Min-A Jeong ◽  
Ye-Jin Jeong ◽  
Kwang-Il Kim

In Korea, red sea bream iridovirus (RSIV), especially subtype II, has been the main causative agent of red sea bream iridoviral disease since the 1990s. Herein, we report two Korean RSIV isolates with different subtypes based on the major capsid protein and adenosine triphosphatase genes: 17SbTy (RSIV mixed subtype I/II) from Japanese seabass (Lateolabrax japonicus) and 17RbGs (RSIV subtype II) from rock bream (Oplegnathus fasciatus). The complete genome sequences of 17SbTy and 17RbGs were 112,360 and 112,235 bp long, respectively (115 and 114 open reading frames [ORFs], respectively). Based on nucleotide sequence homology with sequences of representative RSIVs, 69 of 115 ORFs of 17SbTy were most closely related to subtype II (98.48–100% identity), and 46 were closely related to subtype I (98.77–100% identity). In comparison with RSIVs, 17SbTy and 17RbGs carried two insertion/deletion mutations (ORFs 014R and 102R on the basis of 17SbTy) in regions encoding functional proteins (a DNA-binding protein and a myristoylated membrane protein). Notably, survival rates differed significantly between 17SbTy-infected and 17RbGs-infected rock breams, indicating that the genomic characteristics and/or adaptations to their respective original hosts might influence pathogenicity. Thus, this study provides complete genome sequences and insights into the pathogenicity of two newly identified RSIV isolates classified as a mixed subtype I/II and subtype II.


2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Eric Hallerman

AbstractWith external fertilization, high fecundity, and established methods for propagation and larval rearing for cultured species, fish provide systems well suited to genome-editing procedures. While early experiments utilized zinc-finger nucleases and transcription activator-like effector nucleases (TALENs), most recent ones have used the CRISPR/Cas9 editor, and achieved rates of targeted genomic insertion well above those of classical transgenic methods, with lower frequencies of off-site integration. Genome-editing experiments with cultured fishes have focused on improving growth rate and disease resistance, achievement of reproductive confinement, and other valued traits. As reviewed here, advances in knowledge of key molecular pathways and, in some cases, favorable alterations of phenotype have been achieved. For example, loss-of-function of myostatin, a negative regulator of muscle growth, led to increased muscle mass, greater weight, and greater fillet yield in genome-edited lines of red sea bream, tiger puffer, and Nile tilapia than in their unedited counterparts. The red sea bream line become the first genome-edited animal to reach commercial production. As for all animals, wide adoption of genome-edited fishes will depend upon addressing issues of regulation, consumer acceptance, and breeding infrastructure.


2021 ◽  
Vol 24 (11) ◽  
pp. 351-359
Author(s):  
Guk Hyun Kim ◽  
Min Jae Kim ◽  
Hee Ju Choi ◽  
Min Ji Koo ◽  
Min Jeong Kim ◽  
...  

2021 ◽  
Author(s):  
Amal Biswas ◽  
Fumiaki Takakuwa ◽  
Shinichi Yamada ◽  
Asuka Furukawa ◽  
Masaru Shiratori ◽  
...  

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