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| 1 | 塔城盆地大鸨迁徙前期种群分布与集群大小研究显示文摘2014年10月采用样线法调查了塔城地区大鸨指名亚种Otis tarda tarda迁徙前期种群分布与集群特征。调查面积约2000 km2。调查期间共记录大鸨54群374只,主要分布于阿不都拉乡、恰夏乡和168团3个区域。受食物可利用度影响,迁徙前期塔城大鸨主要在冬小麦和春小麦留茬地中采食。不同分布区域和栖息地类型没有影响大鸨的平均集群大小。农田生态系统食物资源分布均匀,导致迁徙前期大鸨多集小群,偶集大群,以避免集大群而带来的资源竞争。 | 汪沐阳 徐峰 陈强 库尔班江.哈那哈提 杨维康 David Blank | 2015 | 四川动物2015，34，6： | 1 |
| 2 | 内蒙古乌拉特鹅喉羚蒙古亚种夏季生境选择初步研究显示文摘【目的】研究鹅喉羚蒙古亚种与夏季栖息地的关系,为探索鹅喉羚蒙古亚种的生境选择和生境恢复提供科学依据。【方法】于2016年7—8月,采用样线法和随机样方法,在内蒙古乌拉特后旗的蒙古野驴-梭梭林国家级自然保护区展开了鹅喉羚蒙古亚种夏季生境选择研究。共获得71个鹅喉羚数据样方,测定了15种生境因子,计算Vanderploeg和Scavia选择指数同时进行主成分分析。【结果】鹅喉羚喜好高平原和残丘,坡向半阴,灌木类型以白刺灌木林为主。倾向选择灌木数量为0~10株、20~30株,植被盖度为0~20%、60%~80%,距道路的距离为10~15 km,距居民点的距离为10~15 km的生境。主成分分析结果显示,前5个主成分的累计贡献率为76.504%,其中第1主成分的贡献率为22.058%,地形因子(坡向、坡位和坡度)是第1主成分的影响因子,其他几个主成分的生境选择因子主要是干扰、水源和食物及植被因子。【结论】因此,我们认为夏季鹅喉羚对生境的选择呈现一定的偏好和回避,是由于夏季保护区内气候、地形、食物以及干扰等因子特有的季节性特征导致,也体现出其对保护区实际生境情况和资源分布进行的择优和取舍行为。 | 赵宇 金崑 | 2019 | 北京林业大学学报2019，41，3： | 1 |
| 3 | Reproductive biology of Gazella arabica: Predictors of offspring weight and short- and long-term offspring survival显示文摘Reproductive traits are central to organismal fitness,and so the factors influencing patterns of reproduction and offspring survival are at the heart of biology.Making use of breeding data collected over 16 years at the King Khalid Wildlife Research Centre in Saudi Arabia,we investigated the reproductive biology of Arabian gazelles Gazella arabica.Offspring survival was mainly a function of birth weight,with heavier offspring having higher survival rates than lighter offspring.However,while sons were heavier than daughters,daughters had higher survival rates.We could not find evidence that giving birth to sons negatively impacts offspring weight in the following year.We uncovered large narrow-sense heritability(h2)in offspring weight at birth,while maternal effects(m2)on birth weight were of lesser importance.However,maternal effects on offspring survival were strong until weaning age,while paternal effects dominated survival to sexual maturity and first reproduction.We propose that variation in maternal postnatal care might overshadow the effects of maternal inheritance of birth weights,while the overall strong heritability of weight at birth and the paternal effects on survival llustrates strong variance in sire fitness based on genetic quality,suggesting a role for sexual selectionbyfemalemate choiceinwildpopulations. | Ryan A.Martin Rudiger Riesch Martin Plath Naif A.Al Hanoosh Torsten Wronski | 2023 | Current Zoology2023，69，6： | 0 |
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