Effects of the "all-fish" GH (growth hormone) transgene expression on resistance to Ichthyophthirius multifiliis infections in common carp, Cyprinus carpio L.
文献类型： 外文期刊
作者： Ling, Fei 1 ; Luo, Qing 2 ; Wang, Jian-Guo 1 ; Wang, Ya-Ping 2 ; Wang, Wen-Bo 4 ; Gong, Xiao-Ning 1 ;
作者机构： 1.Chinese Acad Sci, Lab Healthy Aquaculture, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
4.Chinese Acad Fishery Sci, Div Fishery Organism Dis Control, S China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
关键词： "All-fish" growth hormone gene;Ichthyophthirius multifiliis;Transgenic fish;Infection level
期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）
ISSN： 0044-8486
年卷期： 2009 年 292 卷 1-2 期
页码：
收录情况： SCI
摘要： A study was undertaken on the susceptibility of the F(4) generation of "all-fish" growth hormone transgenic carp, Cyprinus carpio L, against Ichthyophthirius multifiliis infections. When 1-year old, transgenic carp, with non-transgenic carp and non-manipulated carp (controls) were split into three batches, and experimental infections were performed throughout the 3-month period. All 72 fish were successfully infected. It was shown that there was a significant difference (P<0.01) on infection level between transgenics and non-transgenics, and transgenics and controls. It possibly resulted from transgenics that had stronger non-specific immune functions. In addition, fish surface area affected significantly infection level (P<0.001). Carp with larger surface area harboured more parasites for each type of fish, but transgenic with larger surface area than non-transgenics and controls (P<0.01), loaded fewer parasites than others. Besides, the time of infection also greatly influenced (P<0.001) infection level. Results showed that there was a significant decline in parasite infectivity through October to November (P<0.001). It was likely to suggest that there existed senescence resulted in failure of any I. multifiliis isolate maintenance. Significant difference in infectivity between isolate G from grass carp and isolate H from gold fish suggested that different parasite strains may exist. (C) 2009 Elsevier B.V. All rights reserved.
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