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首页> 外文期刊>Apidologie >Negative evidence for effects of genetic origin of bees on Nosema ceranae, positive evidence for effects of Nosema ceranae on bees
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Negative evidence for effects of genetic origin of bees on Nosema ceranae, positive evidence for effects of Nosema ceranae on bees

机译:蜜蜂遗传起源对Nosema ceranae影响的负面证据,蜜蜂对Nosema ceranae影响的正面证据

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摘要

In two tests, honey bee colonies of different origins were sampled monthly to detect possible differential infection with Nosema ceranae; colony sizes and queen status were monitored quarterly. One experiment used queens crossed with drones of the same type obtained from colonies which had previously exhibited high and low infections. A second experiment used queens from ten commercial sources. No clear genotypic (P=0.682) or phenotypic (/>=0.623) differences in infection were evident. Colony deathsand supersedures did not relate significantly with infection except for deaths of colonies in the autumn (f=0.02). Significant effects on colony growth were found in all seasons: average 3-month decreases in population ranged from 0.4 to 1.4 frames of bees per million N. ceranae per bee. These results confirm that N. ceranae can be involved in weakening of colonies even in warm climates and suggest that breeding for resistance may require more intense selection, larger base populations, or different screening methods.
机译:在两个测试中,每月对不同来源的蜜蜂菌落进行采样,以检测可能存在的Nosema ceranae的差异感染。每季度监测菌落大小和蚁后状况。一项实验使用了女王/王后与从以前表现出高和低感染率的殖民地获得的相同类型的无人机杂交。第二个实验使用了来自十个商业来源的皇后。没有明显的基因型(P = 0.682)或表型(/>=0.623)感染差异。除秋季菌落死亡外(f = 0.02),菌落死亡和替代与感染没有显着关系。在所有季节中都发现了对菌落生长的显着影响:种群的平均3个月减少量为每百万只蜜蜂中华蜜蜂0.4到1.4帧蜂。这些结果证实,即使在温暖的气候下,cerenae ceranae也可能参与菌落的弱化,并且表明抗性育种可能需要更严格的选择,更大的基本种群或不同的筛选方法。

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