Results 31 to 40 of about 1,265 (155)

大袋鼠人工饲养与繁殖的研究

open access: yes野生动物学报, 1993
通过十年研究,基本掌握了大袋鼠在人工饲养条件下生长、发育、繁殖的生态及其对饲养生境的需求,成功地完成了两种大袋鼠的连续繁殖,目前已繁殖子代第五代,十年共繁殖两种大袋鼠37只,繁殖价值达30万元以上,支援了广州、沈阳、武汉等七家城市动物园共14只大袋鼠。探讨了大袋鼠繁殖过程中的幼仔掉袋、人工育幼等难点问题。在对掉袋幼仔的急救处理及人工袋育幼等研究中均取得较好成果。
濮燕群
doaj  

Integrating Plant Tissue Culture and DNA Barcoding: Cutting‐Edge Technologies for Plant Conservation in Sri Lanka 整合植物组织培养与dna条形码技术:斯里兰卡植物保护的前沿技术

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 555-568, December 2025.
Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species. This review emphasizes the potential of biotechnological approaches to enhance conservation accuracy and ...
Mylange Dona Kasundi Mekhala Gunasena   +2 more
wiley   +1 more source

Preliminary study on population genetic diversity of the little egret (Egretta garzetta) with microsatellite loci [PDF]

open access: yes, 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
core  

绿尾虹雉迁地保护现状及对策

open access: yes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  

Identifying priority areas for conservation to promote connectivity and mitigate the impacts of anthropogenic disturbance

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract As nations seek to expand protected area (PA) networks to cover 30% of land and seas by 2030 (30×30), there is an urgent need for systematic conservation planning and spatial prioritization that considers the broad range of ecological and socioeconomic factors influencing the persistence of biodiversity.
Edmond Sacre   +2 more
wiley   +1 more source

高原鼠兔繁殖季节血液指标、血气及性激素变化

open access: yes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  

Assessment of the Threat Status of Bent‐Toed Geckos (Cyrtodactylus) in Indochina: Implementation of the One Plan Approach

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 464-475, September 2025.
This study investigates the diversity, conservation status, distribution, and discovery rate of 84 Cyrtodactylus species in Indochina. Despite rising discovery rates, many species are unassessed, with over half unprotected and 90.5% endemic. This study suggests expanding protected areas and implementing an integrated approach to conservation with IUCN ...
Matilda Julia Lasota   +6 more
wiley   +1 more source

青海湖裸鲤的种群结构和线粒体DNA变异 [PDF]

open access: yes, 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
core  

Effects of the Grazing Exclusion Policy on Pheasant Nesting Success and Predation Risk in the Protected Areas of Southwestern China 森林禁牧对中国西南保护区雉类繁殖成功率与捕食风险的影响研究

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 381-392, September 2025.
Grazing bans improved vegetation but increased predator activity, reducing pheasant nesting success in Giant Panda National Park—highlighting trade‐offs in conservation policy. ABSTRACT Grazing has a profound impact on forest ecosystems and biodiversity.
Yifei Zhang   +7 more
wiley   +1 more source

Changes in the content of ABA, GA3 and carbohydrate in the viviparity of mangrove plants [PDF]

open access: yes, 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
core  

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