Edwardsiella piscicida, a pathogenic bacterium newly detected in spotted sea bass Lateolabrax maculatus in China

Spotted sea bass (Lateolabrax maculatus, McClelland, 1844) is a species belonging to the genus Lateolabrax (Lateolabracidae), and is characterized by the many distinct black spots on the bodies of mature fish. For the first time, six specimens have been recorded in Quang Ninh province. The specimens were collected from Luon Cave in Bai Tu Long National Park in May-June 2019. The new specimens collected from Quang Ninh, Vietnam are different from the recorded specimens from Japan, Korea, Taiwan, and China in terms of lateral line scales (LLS) as the samples collected in Quang Ninh, Vietnam have 94-97 scales and the samples collected from the other countries have 66-82 scales. Phylogenetic analysis of the 16S rDNA sequence confirmed that all of the samples collected in Quang Ninh, Vietnam belonged to the species of spotted sea bass.

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Genome-wide evolutionary signatures of climate adaptation in spotted sea bass inhabiting different latitudinal regions

10.22541/au.161555584.41724264/v1 ◽

2021 ◽

Author(s):

Baohua Chen ◽

Zhixiong Zhou ◽

Yue Shi ◽

Jie Gong ◽

Chengyu Li ◽

...

Keyword(s):

Evolutionary Biology ◽

Climate Adaptation ◽

Demographic History ◽

Thermal Adaptation ◽

Sea Bass ◽

Latitudinal Gradients ◽

Phylogeographic Structure ◽

Northwest Pacific ◽

Marginal Seas ◽

Lateolabrax Maculatus

Temperature is an important climatic factor that shapes the distribution of eurythermal species. Thermal adaptation of species is important to both evolutionary biology and climate-change biology because it frequently leads to latitudinal gradients of various phenotypes among populations. Spotted sea bass (Lateolabrax maculatus) has a broad latitudinal distribution range along the marginal seas of the Northwest Pacific, providing an excellent teleost model for climate adaptation studies. We generated over 8.57 million SNP loci using whole genome re-sequencing from 100 samples collected at 14 geographic loci. We built the phylogeographic structure and demographic history of L. maculatus and determined sea surface temperature as the key environmental factor and major driving force for genetic divergence and local adaptation. We also identified distinct selective signatures and functional genes underlying adaptive mechanisms and ecological tradeoffs in the southernmost and northernmost populations inhabiting distinct climatic and latitudinal zones. The results offer an opportunity to better understand the genetic basis of the phenotypic variation in eurythermal fishes inhabiting different climatic regions.

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Blood physiological responses and steroidogenetic effects of decreasing salinity on maturing male spotted sea bass (Lateolabrax maculatus )

Aquaculture Research ◽

10.1111/are.13817 ◽

2018 ◽

Vol 49 (11) ◽

pp. 3517-3528 ◽

Cited By ~ 1

Author(s):

Meili Chi ◽

Meng Ni ◽

Yongyi Jia ◽

Zhimin Gu ◽

HaiShen Wen

Keyword(s):

Physiological Responses ◽

Sea Bass ◽

Lateolabrax Maculatus

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Survival and serum biochemical responses of spotted sea bass Lateolabrax maculatus during simulated waterless live transportation

Aquaculture Research ◽

10.1111/are.14685 ◽

2020 ◽

Vol 51 (9) ◽

pp. 3495-3505

Author(s):

Ruipeng He ◽

Yuepeng Su ◽

Anli Wang ◽

Bo Lei ◽

Kuopeng Cui

Keyword(s):

Sea Bass ◽

Biochemical Responses ◽

Lateolabrax Maculatus ◽

Serum Biochemical

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Dietary Supplementation with Sea Bass (Lateolabrax maculatus) Ameliorates Ulcerative Colitis and Inflammation in Macrophages through Inhibiting Toll-Like Receptor 4-Linked Pathways

International Journal of Molecular Sciences ◽

10.3390/ijms20122907 ◽

2019 ◽

Vol 20 (12) ◽

pp. 2907 ◽

Cited By ~ 3

Author(s):

Jiali Chen ◽

Muthukumaran Jayachandran ◽

Wenxia Zhang ◽

Lingyuqing Chen ◽

Bin Du ◽

...

Keyword(s):

Molecular Mechanisms ◽

Intestinal Inflammation ◽

In Vitro Study ◽

Sea Bass ◽

Mice Model ◽

Food Material ◽

Lateolabrax Maculatus ◽

Associated Conditions ◽

Anti Inflammatory

Sea bass (Lateolabrax maculatus) is a kind of food material commonly consumed in daily life. In traditional Chinese medicinal books, it has been indicated that sea bass can be applied for managing many inflammation-associated conditions. However, the studies on the pharmacological mechanisms of inflammation of sea bass remain scarce. Hence, this study aims to investigate the molecular mechanisms of the anti-inflammatory activity of sea bass. Anti-inflammatory activities of sea bass were assessed using dextran sulfate sodium (DSS)-induced colitis in a mice model and lipopolysaccharide (LPS)-activated macrophages model. Low body weight and short colon length were observed in DSS-fed mice that were significantly recovered upon sea bass treatments. Moreover, the colon histopathology score showed that sea bass-treated mice had decreased crypt damage, focal inflammation infiltration and the extent of inflammation, suggesting that treatment with sea bass could attenuate intestinal inflammation. In addition, the in-vitro study conjointly indicated that sea bass could suppress the inflammatory mediators in LPS-activated macrophage by inhibiting the TLR4-linked pathway. The present findings demonstrated that sea bass has an inhibitory effect on TLR4 signaling; thus, it could be a promising candidate for treating inflammation-associated conditions. A further justification for the clinical application of sea bass in treating inflammation-associated conditions is necessary.

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