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A Comparative Study on the Nonspecific Immunity of Juvenile Litopenaeus vannamei ever Inhabiting Freshwater and Seawater

查看全文 作　　者：JIA [1]Xuying;DING [2]Sen;WANG [1]Fang;DONG [1]Shuanglin 高影响力作者 机构地区：[1]Key Laboratory of Mariculture of Ministry of Education of China, Ocean University of China;[2]Laboratory of Riverine Ecological Conservation and Technology, Chinese Research Academy of Environmental Sciences高影响力机构 出　　处：《Journal of Ocean University of China》索引2014年第13卷第3期,共7页高影响力期刊 基　　金：supported by a project of The Major State Basic Research of China (2009CB118706) 摘　　要：A study on the nonspecific immunity of Litopenaeus vannamei ever inhabiting freshwater and seawater was carried out at different molt stages by comparing their total hemocyte count(THC) and respiratory burst(RB) and activity of phenol oxidase(PO), nitric oxide synthase(NOS) and lysozyme(LY). Two-way ANOVA showed that salinity and molt stage independently affected THC and RB and the activity of PO, NOS and LY of juvenile L. vannamei significantly(P < 0.05). The THC and RB and the activity of NOS gradually increased from the post-molt stages(A and B) to the pre-molt stages(D0–D3), which were common in shrimps inhabiting freshwater and seawater. The activity of PO peaked at the inter-molt stage(C), and touched the lowest at the post-molt stage in freshwater and pre-molt stage in seawater. The activity of LY was stable over the molt cycle. The RB and the activity of PO, NOS and LY of juvenile L. vannamei were significantly lower in freshwater than in seawater; whereas THC was significantly higher in freshwater than in seawater(P < 0.05). It was concluded that the post-molt stage(especially stage A) was critical to shrimp culture, which should be intensively attended when L. vannamei was cultured in freshwater. 关 键 词：非特异性免疫功能 凡纳滨对虾 淡水 海水 少年 居住 NOS活性 南美白对虾
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