Results 121 to 130 of about 12,700 (210)

朱鹮性别分子鉴定的研究进展

open access: yes野生动物学报
朱鹮(Nipponia nippon)为世界濒危物种,也是国家一级重点保护鸟类。虽然一系列的保护措施显著增加了朱鹮种群规模和分布区域,但近交衰退、低繁殖力和雏鸟高致残率等问题一直制约着朱鹮种群的发展。朱鹮由于雌雄同型,难以从外观区分性别,因此性别鉴定将对其人工繁殖具有重要意义。本文综述了朱鹮性别的分子鉴定方法,主要包括基于性染色体连锁的染色体解旋酶DNA结合蛋白CHD基因及EcoRⅠ片段的PCR鉴定方法,以期进行有效的人工繁育工作,实现对朱鹮种群的保护及规模重建。
邱国强   +6 more
doaj  

Evaluating the Probiotic Potential of Lactic Acid Bacteria Isolated from Nipponia nippon Feces

open access: yes
Abstract This study aims to identify an optimal lactic acid bacterial strain from the feces of healthy Nipponia nippon. From the fecal samples, twenty isolates were obtained. The isolates were subjected to biochemical identification, acid and bile tolerance tests, in vitro inhibition of pathogenic bacteria assays, cell surface hydrophobicity ...
Lei Yang   +13 more
openaire   +1 more source

笼养朱鹮雏鸟的行为发育

open access: yes野生动物学报, 2016
2014年5~8月和2015年5~8月,在北京动物园利用扫描取样法和焦点动物取样法,对10只圈养朱鹮(Nipponia nippon)雏鸟的行为发育过程进行观察。提出笼养朱鹮雏鸟的行为谱,记录雏鸟发育过程中各种行为首次出现时间,分析了朱鹮雏鸟行为时间分配及与日龄的相关性。结果表明,雏鸟出壳后至10~16日龄,以休息行为为主,休息行为时间分配达46.87%以上,随日龄增加休息行为逐渐减少,趋于稳定; 休息行为与日龄呈极显著负相关 ...
刘 佳 崔多英 毛 宇 张媛媛 刘 娜 贾 婷 刘 斌
doaj  

Futures Thinking in Middle School Science Textbooks: A Perspective from Japan [PDF]

open access: yes
This research aims to illuminate the characteristics of "Futures Thinking" components within the interdisciplinary units of "Science, Technology, and Humanity" and "Nature and Humanity" and "Sustainable development" within Japanese middle school science ...
Fiel\u27ardh, Khalifatulloh
core   +1 more source

Genetic analysis of endangered species Crested Ibis (Nipponia nippon) microsatellite markers

open access: yesThe Korean Journal of Ornithology, 2018
Da Hye Kim   +4 more
openaire   +1 more source

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