The color change and stress response of Atlantic salmon (Salmo salar L.) infected with Aeromonas salmonicida
文献类型： 外文期刊
作者： Yi, Mengmeng 1 ; Lu, Huanda 4 ; Du, Yishuai 1 ; Sun, Guoxiang 1 ; Shi, Ce 1 ; Li, Xian 1 ; Tian, Huiqin 1 ; Liu, Ying 1 ;
作者机构： 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Minist Agr, Key Lab Trop & Subtrop Fishery Resource Applicat, Guangzhou 510380, Peoples R China
3.Dalian Ocean Univ, Minist Educ, Key Lab Environm Controlled Aquaculture, Dalian 116023, Peoples R China
4.Zhejiang Univ, Ningbo Inst Technol, Ningbo 315100, Peoples R China
关键词： Atlantic salmon; Aeromonas salmonicida; Color change
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.216； 五年影响因子：3.812 ）
ISSN： 2352-5134
年卷期： 2021 年 20 卷
页码：
收录情况： SCI
摘要： Fish challenged with pathogens often show behavioral disorders. The present study investigated the influence of Aeromonas salmonicida infection on the body color changes of Atlantic salmon (Salmo salar L.). In both conditions of a white background and transfer from the black background to the white background, the body color contrast of the fish infected with A. salmonicida (100 mu L bacterium solution 8.2 x 10(9) CFU ml(-1) in the dorsal muscle) declined significantly following an initial increase compared with the control group (100 mu L 0.9 % NaCl); the greatest differences were observed on day 11, at 57.6 % and 52.7 % respectively (P<0.01). In the black background (transferred from white to the black background), A. salmonicida infection resulted an initial lower and then higher contrast in the challenged fish (P<0.01), and the greatest difference occurred on day 5, reaching 156.7 % (P<0.01). Meanwhile, the cortisol, melanocyte stimulating hormone (MSH) and melanin-concentrating hormone (MCH) levels in serum were also evaluated. Comparing the infected fish with the control fish, the cortisol (7.2 % similar to 21.2 %), MSH (25.8 % similar to 48.6 %) and MCH (36.4 % similar to 54.4 %) levels of the infected fish were elevated to varying degrees after infection with A. salmonicida (P < 0.05). The results suggested that A. salmonicida challenge altered the color-change behavior, which might be regulated by MSH and MCH.
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