Effects of Cecropin Transgenesis and Interspecific Hybridization on the Resistance to Ichthyophthirius multifiliis in Channel Catfish and Female Channel Catfish x Male Blue Catfish Hybrids
文献类型： 外文期刊
作者： Elaswad, Ahmed 1 ; Khalil, Karim 1 ; Ye, Zhi 1 ; Alsaqufi, Ahmed 1 ; Abdelrahman, Hisham 1 ; Su, Baofeng 1 ; Perera, D 1 ;
作者机构： 1.Auburn Univ, Sch Fisheries Aquaculture & Aquat Sci, Auburn, AL 36849 USA
2.Suez Canal Univ, Fac Vet Med, Dept Anim Wealth Dev, Ismailia 41522, Egypt
3.Cairo Univ, Fac Vet Med, Dept Anat & Embryol, Giza 12211, Egypt
4.King Faisal Univ, Coll Agr & Food Sci, Dept Aquaculture & Anim Prod, Alahsa Hofuf, Saudi Arabia
5.Cairo Univ, Fac Vet Med, Dept Vet Hyg & Management, Giza 12211, Egypt
6.Chinese Acad Fishery Sci, Heilongjiang Fisheries Res Inst, Key Lab Freshwater Aquat Biotechnol & Genet Breed, Minist Agr, Harbin 150070, Heilongjiang, Peoples R China
7.Univ Arkansas Pine Bluff, Dept Aquaculture & Fisheries, Pine Bluff, AR 71603 USA
8.Alexandria Univ, Fac Agr Saba Basha, Dept Agr Bot, Alexandria 21568, Egypt
期刊名称：NORTH AMERICAN JOURNAL OF AQUACULTURE （ 影响因子：1.717； 五年影响因子：1.664 ）
ISSN： 1522-2055
年卷期： 2019 年 81 卷 3 期
页码：
收录情况： SCI
摘要： The resistance of Channel Catfish Ictalurus punctatus, hybrid catfish (female Channel Catfish x male Blue Catfish I. furcatus [CB hybrids]), and Channel Catfish and hybrid catfish expressing the introduced cecropin B gene to Ichthyophthirius multifiliis infestation was investigated in two experiments. In experiment I, four fingerling groups were challenged, including cecropin-transgenic Channel Catfish, cecropin-transgenic CB hybrids, non-transgenic Channel Catfish, and non-transgenic CB hybrids. Non-transgenic Channel Catfish survived for a shorter time than the other three groups. Survival rate was significantly different between non-transgenic Channel Catfish and the other groups, which had similar survival rates. In experiment II, non-transgenic CB hybrids had a less severe infestation than non-transgenic Channel Catfish. Mortality rates were 62.4% and 40.2% for non-transgenic Channel Catfish and CB hybrids, respectively. The mean survival time for non-transgenic hybrids was significantly longer (>5 d) than that of non-transgenic Channel Catfish. The results suggest that genetic enhancement of Ichthyophthirius resistance can be accomplished in Channel Catfish by either cecropin transgenesis or interspecific hybridization. In addition to survival rate, improving survival time is important because the extension of survival time provides greater opportunity to apply treatments to stop the protozoan infestation.
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