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川西亚高山斑羚冬春季死亡调查及保护策略

The Death Investigation and Protection Strategies of Gorals in Subalpine Areas of Western Sichuan

  • 摘要: 川西亚高山冬春季常发现数量不等、死因不明的斑羚尸体,这极不利于斑羚及其它野生动物的科学保护和管理。为深入了解该区域冬春季节斑羚死亡的具体情况,以期找到死亡原因及相应对策,于2016年10月~2017年3月,采用样线调查与样方调查相结合的方法,对卧龙自然保护区邓生管护区域内设置的5条样线进行了12次调查。共发现斑羚尸体21只,其中雌性两只,雄性17只,无法辨别两只,分别占总数的9.5%、81.0%,和9.5%。采集皮肤病料17份,实验室检测后疥螨虫卵都呈阳性。死亡时间集中在1月~2月(19只,占90.5%)。斑羚尸体全部位于水源点20 m范围内,最远20 m,最近1m,平均8.5 m。斑羚尸体集中分布于海拔2 200 m~2 900 m的河谷地带(18只,占85.7%,最低海拔为2 165 m,最高海拔为2 910 m),周边生境类型为针阔叶混交林。斑羚尸体被其他动物取食6只,占28.6%,未被取食15只,占71.4%。调查过程中无害化处理17只,占81.0%。收集头骨3个,骨架1副。同时对该区域斑羚患病、死亡原因进行了初步分析,并提出了针对性管护建议。

     

    Abstract: In recent years,dead goral bodies were often found in winter and spring in subalpine areas of western Sichuan.As the dead bodies resulted from unknown cause and varied in amount,it was very unfavorable to the protection and management of the goral and other wild animals in these areas.To find the cause of the goral's death,and corresponding countermeasure,12 times of investigation were conducted in the Dengsheng Managed and Conserved Area from October 2016 to March 2017,21 dead bodies of gorals were found,of which,2 were female,17 were male and 2 were unable to be distinguished,respectively accounting for 9.5%,81.0%,and 9.5% of the total.17 skin samples were collected,and the lab testing showed that sarcoptidae eggs were positive.The death time was mainly in January and February (19 gorals,accounting for 90.5%).All the death places were within 20 meters away from the water points,of which the farthest was 20 meters,the nearest was 1 meter,and the average was 8.5 meters.Bodies were found to be concentrated in the valleys of 2 200 to 2 900 meters above the sea level (18 gorals,accounting for 85.7%,the lowest was 2 165 meters and the highest was 2 910 meters),and the peripheral habitat type was mixed coniferous broad leaved forest.6 bodies were found to be eaten by other animals and 15 were not eaten,accounting for 28.6% and 71.4% respectively.During the investigation,17 bodies were harmlessly disposed,3 skulls and 1 skeleton were collected.The causes of the goral's illness and death were also analyzed and some suggestions were put forward for the management and conservation of gorals.

     

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