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从四川省的7个县共采集了29群东方蜜蜂的样本,每群测定分析15只工蜂,每只工蜂总共有38个测定的形态特征.对测定的性状特征数据进行主要成分分析、因素分析和聚类分析,发现:四川省7个县的东方蜜蜂分为2个类群,位于四川盆地的东方蜜蜂为一个类群,位于川西高原的东方蜜蜂为另一个类群. 相似文献
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神农架东方蜜蜂的形态特征研究 总被引:3,自引:0,他引:3
该研究通过测定神农架6个不同采样点的6群东方蜜蜂,每群15只工蜂,每只蜜蜂样共38个形态特征,并结测定的性状特征数据进行因素分析、集合分析和区辨分析;形态性状与生态环境因子相关性分析:并与周边省份东方蜜蜂的相关数据进行比较.发现,神农架蜜蜂种群内遗传变异丰富,种群中许多形态性状特征表现出较明显的地理变异性;蜜蜂个体增大、体色变深,具体是前翅长、前翅宽、背板3、4宽;后腿长、蜡镜长、蜡镜宽、蜡镜间距、腹片3、6的长和宽逐渐增加;而背板3、4的色素度、小盾片的色素度逐渐加深.神农架东方蜜蜂种群形态性状的多态性、多型性及其生态地理变异式样,均具有生态适应意义. 相似文献
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山东东方蜜蜂形态特征及分类研究 总被引:2,自引:0,他引:2
本文通过测定山东阳谷、海阳和栖霞三地区18群东方蜜蜂,每群15只工蜂,每只蜜蜂共41项指标,所测的数据进行因素分析发现:海阳和阳谷三地东方蜜蜂的形态特征分别提出了4个特征因子,栖霞东方蜜蜂的形态特征提出了3个特征因子。与其它地区的东方蜜蜂进行聚类分析结果表示山东阳谷东方蜜蜂与北京房山地区东方蜜蜂遗传学距离较近,海阳和栖霞两地东方蜜蜂遗传距离较近,而山东东方蜜蜂与其它国家或地区东方蜜蜂遗传距离较远,为我国东方蜜蜂的分类提供了科学参考依据。 相似文献
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陇南东方蜜蜂的分类地位 总被引:1,自引:0,他引:1
该研究通过测定甘肃陇南地区的岷县、临潭县,甘肃陇东地区的天水、四川西北部阿坝州的九寨沟8个不同样点的16群东方蜜蜂,每群15只工蜂,每只蜜蜂样共38个形态特征,测定的性状特征的数据进行因素分析,集合分析和区辨分析,并就这些数据进行ANOVA比较,发现:甘肃陇南地区的蜜蜂种群中许多形态性状特征比较特别:蜜蜂个体最大、体色最深,具体是:前翅长、前翅宽、背板3、4宽;后腿长、蜡镜长、蜡镜宽、蜡镜间距、腹片3、6的长和宽在目前收集的东方蜜蜂数据库里均为最大值,与天水、四川九寨沟的东方蜜蜂有很明显的差异(P<0.005);背板3、4的色素度、小盾片的色素度很深,与周边省份和亚洲其它国家的东方蜜蜂的相关数据进行比较,初步结论是陇南地区的东方蜜蜂应属于一个新的类群或亚种. 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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