The geographical variations in life history characteristics of small yellow croaker Larimichthys polyactis, caused by experienced different environmental conditions, have been observed in China seas. Previous studies ...The geographical variations in life history characteristics of small yellow croaker Larimichthys polyactis, caused by experienced different environmental conditions, have been observed in China seas. Previous studies based on spatial distribution, migration route, and body morphometrics suggested a complex stock structure. In this study, to clarify the source of a spawning stock, we investigated the reproduction strategy and inter-structure of the Haizhou Bay (HZB) spawning stock in the middle Yellow Sea from both egg survey and adult otolith increment analysis. Egg and adult samples were collected from three surveys during spawning season in 2013. Distinct spatial and temporal variations were detected in egg distribution and size, and otolith shape analysis of adult fishes revealed two morphotypes with different increment growth using random forest cluster. The results indicate the existence of two components within the same spawning stock in HZB from different wintering grounds, and accordingly special protection should be required for this stock given the significance to maintain connectivity between adjacent subpopulations.展开更多
The Japanese Spanish mackerel Scomberomorus niphonius(Cuvier,1832)is widely distributed in the subtropical and temperate waters of the northwestern Pacific Ocean,supporting one of the most important commercial fisheri...The Japanese Spanish mackerel Scomberomorus niphonius(Cuvier,1832)is widely distributed in the subtropical and temperate waters of the northwestern Pacific Ocean,supporting one of the most important commercial fisheries in China.However,ignoring the potential population structure changes induced by fishing pressure and climate change may undermine the population stability under the current management strategy.In this study,the population structure of the Japanese Spanish mackerel was investigated based on a morphometric truss network system.A total of 534 individuals were randomly collected from commercial gill nets spanning eight major spawning grounds in the Bohai,Yellow,and East China Seas during the peak spawning seasons respectively.A total of 17 measurements(including eye diameter)were conducted in each specimen and subjected to principal component analysis(PCA)and discriminant function analysis(DFA).The results of PCA indicated that the first two factors cumulatively caused 78.38%of the total morphometric variation and observable differences,primarily fin the caudal and trunk areas.The results of DFA revealed that the eight spawning groups can be divided into three stocks,i.e.,southern,middle,and northern stocks,with 68.7%of total accuracy.In contrast to previous studies,the spawning groups of the Japanese Spanish mackerel demonstrated a tendency to disperse to northern regions.In conclusion,this study found that to maintain the stability of the population structure and the total production of Japanese Spanish mackerel S.niphonius(Cuvier,1832),a newly revised management method should be developed and implemented.展开更多
OBJECTIVE:To uncover the anti-tumor effects and potential mechanism of Sanwu Baisan Decoction(三物白散,SWB)in treatment of colorectal cancer(CRC)in mice.METHODS:Therapeutic effect was evaluated based on body weight ga...OBJECTIVE:To uncover the anti-tumor effects and potential mechanism of Sanwu Baisan Decoction(三物白散,SWB)in treatment of colorectal cancer(CRC)in mice.METHODS:Therapeutic effect was evaluated based on body weight gain,tumor volume,tumor growth inhibition rate,and histological changes and apoptosis in the tumor tissues.Anti-tumor immunity was studied by measuring plasma levels of anti-tumor cytokines,interleukin 6(IL-6),interleukin 17(IL-17),and interferonγ(IFN-γ).Gut morphological changes were evaluated by histological staining and tight junction proteins expressions.Gut microbiota composition was analyzed by 16S r RNA gene sequencing.Classical toll-like receptor 4(TLR-4)/cyclooxygenase 2(COX-2)/prostaglandin E2(PGE-2)pathway was examined in colon tissue and tumor samples.RESULTS:SWB presented high anti-tumor efficacy of CRC in mice,which manifested as decreased tumor volume and increased tumor growth inhibition rate.This anti-tumor effect of SWB was associated with elevated plasma levels of anti-tumor immune cytokines(IL-6,IL-17,and IFN-γ).Further studies showed that SWB also increases the expression of occluding and promotes the abundance of gut probiotics,Clostridium_XIVa,Enterorhabdus,and uncultured_bacterium.Moreover,results suggested that the anti-tumor effects of SWB might associate with inducing cancer cell apoptosis and inhibiting the TLR-4/COX-2/PGE-2 pathway in both colon tissue and tumor samples.CONCLUSION:SWB shows strong anti-tumor efficiency in mice with colorectal carcinoma,possibly through promoting the secretion of anti-tumor immune cytokines,inducing cancer apoptosis,maintaining the gut microbiota,and inhibiting tumorigenesis by inhibiting the TLR-4/COX-2/PGE-2 pathway.展开更多
基金Supported by the Fundamental Research Funds for the Central Universities(No.201562030)
文摘The geographical variations in life history characteristics of small yellow croaker Larimichthys polyactis, caused by experienced different environmental conditions, have been observed in China seas. Previous studies based on spatial distribution, migration route, and body morphometrics suggested a complex stock structure. In this study, to clarify the source of a spawning stock, we investigated the reproduction strategy and inter-structure of the Haizhou Bay (HZB) spawning stock in the middle Yellow Sea from both egg survey and adult otolith increment analysis. Egg and adult samples were collected from three surveys during spawning season in 2013. Distinct spatial and temporal variations were detected in egg distribution and size, and otolith shape analysis of adult fishes revealed two morphotypes with different increment growth using random forest cluster. The results indicate the existence of two components within the same spawning stock in HZB from different wintering grounds, and accordingly special protection should be required for this stock given the significance to maintain connectivity between adjacent subpopulations.
基金supported by the Fundamental Research Funds for the Central Universities of Ocean University of China(Nos.201762015 and 201822027)
文摘The Japanese Spanish mackerel Scomberomorus niphonius(Cuvier,1832)is widely distributed in the subtropical and temperate waters of the northwestern Pacific Ocean,supporting one of the most important commercial fisheries in China.However,ignoring the potential population structure changes induced by fishing pressure and climate change may undermine the population stability under the current management strategy.In this study,the population structure of the Japanese Spanish mackerel was investigated based on a morphometric truss network system.A total of 534 individuals were randomly collected from commercial gill nets spanning eight major spawning grounds in the Bohai,Yellow,and East China Seas during the peak spawning seasons respectively.A total of 17 measurements(including eye diameter)were conducted in each specimen and subjected to principal component analysis(PCA)and discriminant function analysis(DFA).The results of PCA indicated that the first two factors cumulatively caused 78.38%of the total morphometric variation and observable differences,primarily fin the caudal and trunk areas.The results of DFA revealed that the eight spawning groups can be divided into three stocks,i.e.,southern,middle,and northern stocks,with 68.7%of total accuracy.In contrast to previous studies,the spawning groups of the Japanese Spanish mackerel demonstrated a tendency to disperse to northern regions.In conclusion,this study found that to maintain the stability of the population structure and the total production of Japanese Spanish mackerel S.niphonius(Cuvier,1832),a newly revised management method should be developed and implemented.
基金Supported by National Natural Science Foundation-funded Project:the Biological Mechanism of Lingguizhugan Decoction Treating Alzheimer’s Disease via Regulating Brain Lymphatic Drainage System(No.82074504)the Priority Academic Program Development of Jiangsu Higher Education Institutions(Integration of Chinese and Western Medicine)Natural Science Foundation of the Jiangsu Higher Education Institutions-funded Project:to Explore the Mechanism of Sanwubai San Regulating Gut Microbiota Against Colorectal Cancer By IL-23/ΓδT17/IL-17 Axis(19KJB360003)。
文摘OBJECTIVE:To uncover the anti-tumor effects and potential mechanism of Sanwu Baisan Decoction(三物白散,SWB)in treatment of colorectal cancer(CRC)in mice.METHODS:Therapeutic effect was evaluated based on body weight gain,tumor volume,tumor growth inhibition rate,and histological changes and apoptosis in the tumor tissues.Anti-tumor immunity was studied by measuring plasma levels of anti-tumor cytokines,interleukin 6(IL-6),interleukin 17(IL-17),and interferonγ(IFN-γ).Gut morphological changes were evaluated by histological staining and tight junction proteins expressions.Gut microbiota composition was analyzed by 16S r RNA gene sequencing.Classical toll-like receptor 4(TLR-4)/cyclooxygenase 2(COX-2)/prostaglandin E2(PGE-2)pathway was examined in colon tissue and tumor samples.RESULTS:SWB presented high anti-tumor efficacy of CRC in mice,which manifested as decreased tumor volume and increased tumor growth inhibition rate.This anti-tumor effect of SWB was associated with elevated plasma levels of anti-tumor immune cytokines(IL-6,IL-17,and IFN-γ).Further studies showed that SWB also increases the expression of occluding and promotes the abundance of gut probiotics,Clostridium_XIVa,Enterorhabdus,and uncultured_bacterium.Moreover,results suggested that the anti-tumor effects of SWB might associate with inducing cancer cell apoptosis and inhibiting the TLR-4/COX-2/PGE-2 pathway in both colon tissue and tumor samples.CONCLUSION:SWB shows strong anti-tumor efficiency in mice with colorectal carcinoma,possibly through promoting the secretion of anti-tumor immune cytokines,inducing cancer apoptosis,maintaining the gut microbiota,and inhibiting tumorigenesis by inhibiting the TLR-4/COX-2/PGE-2 pathway.
