新疆准噶尔盆地东缘猎隼的繁殖生态
Breeding Ecology of the Saker Falcon at the Eastern Fringe of Junggar Basin, Xinjiang
-
摘要: 猎隼（Falco cherrug）主要繁殖于我国西部省区，为国家Ⅱ级重点保护动物。2005年在新疆准噶尔盆地东缘采用野外调查方法研究了其繁殖生态。猎隼繁殖期为4—7月；窝卵数平均为(4.0±0.63) (3—5)枚；卵长径为（55.40±3.06）mm，卵短径为（41.11±1.70）mm；猎隼的孵化率、雏鸟成活率和繁殖力分别为70.8%、64.7%和1.8；巢成功率为83.3%雏鸟体重、跗蹠长的生长符合逻辑斯谛曲线增长。食物的可利用性是限制新疆猎隼窝卵数和生殖力的主导因素。要有效保护猎隼首先应保护栖息环境和猎物的多样性及丰富度。Abstract: The Saker Falcon（Falco cherrug） is listed as a second class state protected wild animal, mainly distributed in the western provinces of China. From March to July in 2005, the breeding ecology of the Saker Falcon was investigated at the eastern fringe of Junggar Basin, Xinjiang. The results showed that the breeding season of the Saker Falcon was from April to July. The clutch size varied from three to five and the average size was 4.0±0.63. The average length of the eggs were 55.40±3.06 mm and the breadth, 41.11±1.70 mm. The hatchability, survival rate and fecundity of the Saker Falcon were 70.8%, 64.7% and 1.8 respectively. The nest success rate was 83.3%. Their growth changes in body weight and tarsus length, followed a logistic growth curve. In Xinjiang, food is the key factor on clutch size and fecundity for the Saker Falcon. To better protect this Falcon, their habitat should be further protected to maintain a higher prey diversity and abundance, which is essential for the Saker's conservation.
下载: