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为了查明黄河三角洲—高速公路路面万只大仓鼠死亡的原因,选用夹夜法、小方块计数鼠洞法及目测计数法调查鼠密度,采用 GB 15996—1995方法对鼠肺流行性出血热病毒抗原测定.夹夜法调查刺槐林、杂草地、麦田的鼠密度分别为 44. 86%、14.61%及 3. 17%.鼠肺流行性出血热病毒抗原测定均为阴性.死鼠只出现在公路路面上,均有被汽车碾轧痕.刺槐林、杂草地及麦田内没发现死鼠.死亡原因主要是该地区1998年雨水多,野生植被丰富,为鼠类提供了足够的食源,大仓鼠周期性繁殖高峰到来引起鼠密度增高,居住拥挤,冬季来临食源相对贫乏及暖冬现象,驱使鼠类分居,在分居的过程中跑到公路上被汽车碾轧死亡.
In order to find out the cause of the death of ten thousand hamsters in the Yellow River Delta-expressway, the rat density was determined by the method of clip-nocturnin, counting by small square and the visual counting method. The rat model of hemorrhagic fever with pulmonary hemorrhagic fever virus Antigenic determination.The nocturnal method to investigate Robinia pseudoacacia forest, weeds, wheat field rat density were 44.86%, 14.61% and 3.17%. Rat lung epidemic hemorrhagic fever virus antigen test was negative. On the road surface, there was a rolling scars by cars.And no dead rats were found in the locust trees, weeds and wheat fields.The main causes of death were the rainy areas in 1998, the rich vegetation in the wild, The onset of cyclical multiplication of the source and large hamsters has led to an increase in rat density, crowded living conditions, relatively poor food supply in winter, and warm winter phenomena, driving the rats to separate from each other and running to the road during separation to be crushed by cars.