【作者】 赵匠； 易国栋； 万冬梅； 高玮；

【Author】 Zhao jiang Yi guodong Wan Dong-mei Wang Hai-tao Department of Biology, Jilin Normal University, Siping, China 136000 School of Life Science, Northenst Normal University, Changchun, China 1300214 Department of life science, Liaoning University, Shenyang, China 110036

【机构】 吉林师范大学； 辽宁大学生命科学学院； 东北师范大学生命科学院；

【摘要】 2000年和2001年的4-7月,作者在内蒙古扎赉特旗草原,采用野外直接观察法对野生大鸨的窝卵数、营巢成功率进行了研究。结果表明:大鸨种群的平均窝卵数为2.52±0.98 枚/巢(n=21);窝卵数与产卵期值、每巢雏鸟存活率与产卵期值、窝卵数与卵大小之间呈负相关;产卵期值与每巢孵化率之间存在极显著的负相关关系,巢径和巢深与窝卵数之间存在显著的正相关关系,孵化率为24.53%;大鸨的繁殖成功率为23.81%。更多还原

【Abstract】 Direct observation and measurement methods were adopted to study the clutch size and nest success of wild Great Bustard(Otis tarda)on the grassland of Zha-lai-te-qi in Inner Mongolia Municipality during the period from April to July in 2000 and 2001. The results show that the averae clutch size of Great Bustard population is 2.52?.98 individuals per nest(n=53); there exit negative correlation between clutch size and laying date, success fledgling numbers and laying date, clutch size and egg size; significant negative correlation between laying date and incubation rate; significant positive correlation between nest diameter and clutch size; there exist positive correlation between other nest variables and clutch size. The incubation rate is 24.35 %: the reproductive success rate of Great Bustard is 23.81 %.更多还原