| Effects of Hypoxia on Dopamine Concentration and the Immune Response of White Shrimp （Litopenaeus vannamei） |
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| 作者单位： | The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, P.R. China
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| 基金项目： | supported by the Program for New Century Excellent Talents in University(NCET-06-0597);;the Transformation and Expansion of Achievement of Agricultural Science and Technology in Tianjin, China (0604020). |
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| 摘 要： |
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| 关 键 词： | 缺氧 多巴胺 免疫响应 浓度 |
Effects of Hypoxia on Dopamine Concentration and the Immune Response of White Shrimp (Litopenaeus vannamei) |
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| Authors: | HU Fawen PAN Luqing JING Futao |
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| Institution: | The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, P.R. China |
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| Abstract: | Effects of hypoxia on the dopamine concentration and the immune response of White Shrimp Litopenaeus vannamei were studied. The results showed that hypoxia had significant effects on the concentration of dopamine (DA) in the haemolymph, haemocyte count, phenoloxidase activity, phagocytic activity of haemocytes and bacteriolytic and antibacterial activity in the haemolvmph (P<0.05). The concentration of the dopamine in haemolymph reached its maximum in the 3.0 and 1.5mgL-1 DO groups at 12h and 6h, and then returned to normal after 24h and 12h, respectively. All immune parameters decreased with the reduction of dissolved oxygen. Total haemocyte count (THC), the hyaline cells and semi-granular cells in the 3.0mgL-1 DO group became stable after 12h,while granular cells did so after 24h, The THC and different haemocyte count (DHC) in the 1.5mgL-1 DO group became stable alter 24h. Phenoloxidase activity and bacteriolytic activity in the 3.0 and 1.5mgL-1 DO groups reached their stable levels after 24 h and 12 h respectively, while phagocytic activity and antibacterial activity became stable after 24 and 12, and 36 and 24 It, respec-tively. It was also indicated that the changes of dopamine concentrations in haemolymph, haemocyte count and phenoloxidase activ-ity were obviously related to the exposure time under hypoxic conditions. |
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| Keywords: | hypoxia dopamine immune response Litopenaeus vannamei |
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