Results 31 to 40 of about 1,160 (156)
Preliminary study on population genetic diversity of the little egret (Egretta garzetta) with microsatellite loci [PDF]
, 2012 白鹭（Egrettagarzetta）是在全球分布广泛的湿地鸟类，曾被列入《濒危野生动植物种国际贸易公约》名单附录III（2003）。为对其遗传多样性等种群遗传学特征进行研究，本研究筛选获得用于白鹭种群遗传学研究的12个多态性微卫星位点，建立了白鹭羽毛的微卫星分型技术体系。在此基础之上，本文初步研究了中国沿海三个白鹭繁殖种群（广西防城港的巫头村、福建厦门猫屿、浙江舟山馒头山）2010年的种群遗传多样性和遗传结构。 微卫星筛选主要利用跨种扩增的方法，从黄嘴白鹭和棕颈鹭的已知位点中选择高多态性的位点进行扩增，
管昊
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Simulating the efficacy of wolf–dog hybridization management with individual‐based modeling
Conservation Biology, Volume 39, Issue 1, February 2025.In the photo, an introgressed adult wolf–dog in the Northern Apennines, Italy, not far from the city of Bologna. Part of a research program, this male has been sterilized and released back in its own pack with a Global Positioning Collar. Abstract Introgressive hybridization between wolves and dogs is a conservation concern due to its potentially ...
Nina Luisa Santostasi +4 more
wiley +1 more source
野生动物学报, 2019 通过对我国特产雉类绿尾虹雉野外种群状况和圈养繁殖状况研究的调查，对其迁地保护现状做了分析和总结。绿尾虹雉圈养繁育难点主要有：圈养与栖息地海拔和气候环境差异较大使圈养个体易患疾病，存活率低；圈养繁殖率低，繁育技术水平有待提高；圈养种群缺少基础建立者，导致近亲繁殖。本文针对以上难点提出了该物种今后迁地保护相应的对策：根据野外生态环境选择圈养场地，建立生态式笼舍和繁育场所；科学地进行繁殖管理，提高繁育水平和繁殖率；建立疾病防预体系和卫生防疫制度；开展技术交流与合作。希望能为今后绿尾虹雉圈养保护提供参考。
张敬 1 邓江宇 2 马红 2 罗毅 1 陶玉静 3 李莹1左琳 2 张成林 1
doaj
, 2006 对青海湖裸鲤55个个体Cytb基因全序列进行了测定和分析,探讨了种群结构和群体遗传多样性。用MEGA2.1软件分析了碱基组成和序列变异;以黄河花斑裸鲤为外群,构建了单倍型的NJ树;用Arlequin Ver.2 000程序计算了群体内遗传变异值(Fst)。结果显示,青海湖裸鲤群体没有显著的种群结构,提示青海湖裸鲤群体内存在广泛的基因交流;种群的遗传多样性较低(π=0.7828±0.0532),青海湖裸鲤种群很可能在历史上遭受过严重的“瓶颈效应”
何舜平, 彭作刚, 李俊兵, 赵凯
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Island restoration to rebuild seabird populations and amplify coral reef functioning
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Mobile organisms like seabirds can provide important nutrient flows between ecosystems, but this connectivity has been interrupted by the degradation of island ecosystems. Island restoration (via invasive species eradications and the restoration of native vegetation) can reestablish seabird populations and their nutrient transfers between ...
Ruth E. Dunn +5 more
wiley +1 more source
野生动物学报, 2017 2014年5月至2014年10月间,在青海省海北自治州祁连县野牛沟乡达玉村附近,从动态的角度研究高原鼠兔在其生境地繁殖季节前后血常规、血气和性激素的变化,并与繁殖期间的各种环境因子相关联,探讨鼠兔繁殖策略对环境及行为的响应。结果表明,可将该地区高原鼠兔的繁殖期分为过渡恢复阶段(5月以前); 繁殖旺盛阶段(5月下旬～7月中旬); 繁殖抑制阶段(7月下旬～9月下旬); 繁殖静止阶段(10月及10月以后)4个阶段,不同的繁殖阶段高原鼠兔在体重、繁殖指数、血常规指标、血气指标、睾丸相对重量 ...
谢惠春 罗巧玉 陈 志 马永贵
doaj
Integrating adult occurrence and reproduction data to identify conservation measures for amphibians
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Monitoring programs are pivotal to establishing sound management. Due to economic, logistic, and time limitations, monitoring programs often overlook differences among life‐history stages. However, species occurrence does not necessarily mean population viability, and it is unclear to what extent monitoring programs that do not consider ...
Elia Lo Parrino +4 more
wiley +1 more source
Effect Structure of Iron Core on Kinetics of Iron Release from Horse Spleen Ferritin [PDF]
, 2001 建立H+参与马脾铁蛋白释放铁的动力学方程。H+以 1 / 2级反应方式参与铁蛋白释放铁核表层的铁。在酸性介质 ( pH 6 5)中 ,铁蛋白释放铁的总平均速率 ( 332Fe3+/HSF·min)比在碱性介质 ( pH8 0 )中释放铁的总平均速率 ( 73Fe3+/HSF·min)高 4 6倍。铁蛋白的铁核结构和外加的磷酸盐均能影响该蛋白释放铁的速率 ,但并不改变其反应级数。A Kinetic equation of iron release with H + existing was ...
曾骥 +5 more
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Integrative Conservation, Volume 3, Issue 4, Page 330-341, December 2024.Despite the availability of data on plants and their pollinators from the Indian sub‐continent, detailed investigations that explain the intricacy of the mutualistic interaction at both population and community levels have largely been limited. This review explores the current status of pollination ecology research in India and suggests future ...
Arjun Adit +3 more
wiley +1 more source
Changes in the content of ABA, GA3 and carbohydrate in the viviparity of mangrove plants [PDF]
, 2012 应用高效液相色谱法（HPLC）和蒽酮硫酸比色法，对比显胎生红树植物木榄、秋茄，隐胎生红树植物桐花树、白骨壤繁殖器官在花蕾期、种子期、种子萌发早期、种子萌发晚期内源激素GA3、ABA含量以及可溶性糖、淀粉含量的动态变化，探讨胎生发生的可能机制，实验结果如下： 1、四种红树植物繁殖器官不同发育时期内源激素含量的变化 （1）四个发育时期GA3含量变化规律基本相同，从花蕾期到萌发晚期都表现出先升高后降低的趋势：在种子期GA3达到最高值；从花蕾期到种子期GA3含量增幅最大，进入种子萌发早期后GA3含量小幅下降 ...
卢磊
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