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Stress, antioxidant defence and mucosal immune responses of the large yellow croaker Pseudosciaena crocea challenged with Cryptocaryon irritans

文献类型: 外文期刊

作者: Yin, Fei 1 ; Gong, Hui 2 ; Ke, Qiaozhen 3 ; Li, Anxing 4 ;

作者机构: 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Minist Agr, Key Lab East China Sea & Ocean Fishery Resources, Shanghai 200090, Peoples R China

2.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Fujian Province, Peoples R China

3.Ningde Fufa Fisheries Co Ltd, Key Lab Large Yellow Croaker Fujian Prov, Ningde 352000, Fujian Province, Peoples R China

4.Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Key Lab Aquat Prod Safety,Minist Educ, Guangzhou 510275, Guangdong, Peoples R China

关键词: Cryptocaryon irritans;Pseudosciaena crocea;Survival;Stress;Mucosal immune

期刊名称:FISH & SHELLFISH IMMUNOLOGY ( 影响因子:4.581; 五年影响因子:4.851 )

ISSN:

年卷期:

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收录情况: SCI

摘要: To clarify the effects of a Cryptocaryon irritans infection on the stress, antioxidant and mucosal immune response of the large yellow croaker Pseudosciaena crocea, this study utilized C. irritans at dose of 12,000 (group I); 24,000 (group II); and 36,000 (group III) theronts/fish to infect large yellow croaker weighing 100 +/- 10 g. The food intake, survival and relative infection intensity (RID; levels of reactive oxygen species (ROS), malondialdehyde (MDA) and vitamin C (VC), activities of super oxide dismutase (SOD) and catalase (CAT) in liver; variation patterns of lysozyme (LZM), alkaline phosphatase (AMP), complement component 3 (C3) and immunoglobulin M (IgM) levels in the body surface mucus at different time points after infection were compared. These results showed that with the increase of the infection dose and the passage of time, the food intake and survival of the fish gradually decreased. The final survival of the control group (0 theronts/fish), group I, group II, and group III was 100, 100, 96.67 +/- 5.77, and 48.33 +/- 7.64. Group I, II, and III stopped feeding respectively on the third, third and second days after infection. RII increased significantly with increased infection dose. The RH of the control group, group I, group II, and group III was 0, 0.73 +/- 0.06, 1.30 +/- 0.26, and 1.84 +/- 0.02. With the infection dose increased, ROS contents showed an overall upward trend; MDA contents of the group I, group II and group III did not show significant changes at any timepoint compared with the control group; Activities of SOD and CAT and the overall VC levels in the liver of P. crocea dropped; LZM activity showed an overall upward trend; AMP activity increased first then dropped at each timepoint with its highest level appearing at group II; Complement C3 and IgM levels in body surface mucus were significantly increased. In conclusion, P. crocea has a strong ability to resist oxidative stress caused by the infection of C irritans. The body surface mucus of P. crocea contains high levels of immune factors, which presented a rapid and significant response to the infection of C. irritans.

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