Results 31 to 40 of about 3,250 (216)

圈养古巴火烈鸟的繁殖技术

open access: yes野生动物学报, 2021
2015—2020年,以福州动物园33只古巴火烈鸟(Phoenicopterus ruber)为研究对象,通过日常饲养管理总结繁殖经验,并结合监控视频,采用随机观察、目标跟踪法对古巴火烈鸟的繁殖行为、繁殖年龄、繁殖季节、配对模式、发情与交配、筑巢、产卵与孵化、出壳与育雏等方面进行观察研究。结果表明:古巴火烈鸟4—6岁开始产卵繁殖,配对模式属一夫一妻制,偶有3鸟繁殖组和4鸟繁殖组;在福州地区,降水量大和气候温暖的2—4月开始发情交配,3—7月产卵,产卵高峰在6月,每窝1枚卵,每年产1—3枚,孵化期为28 ...
高喜凤
doaj  

Using life history traits to assess climate change vulnerability in understudied species 利用生活史特征评估研究不足物种的气候变化脆弱性

open access: yesIntegrative Conservation, Volume 3, Issue 4, Page 368-381, December 2024.
Lack of species information complicates understanding climate change vulnerability, but life history traits can be proxies for missing information. In the north‐central United States, useful traits for discriminating vulnerability of amphibians include range size, clutch size, diel activity patterns, and habitat breadth.
Ross K. Hinderer   +2 more
wiley   +1 more source

山西芦芽山自然保护区三道眉草鹀的繁殖生态

open access: yes野生动物学报, 2010
2008~2009年,在山西芦芽山自然保护区对9窝三道眉草鹀的繁殖生态进行了观察,该鸟在本区3月种群遇见率为2.9只/km,9月后为5.07只/km,繁殖后比繁殖前增长42.8%;繁殖期为4~7月,营巢期6 d,窝卵数3~5枚,孵卵期12~13 d,孵化率为86%,成活率89.5%,巢内育雏12~13 d,巢外育雏7~8 d。
王建萍
doaj  

Mating system, brood parasitism and extra-pair behaviour in the Chinese egret (Egretta eulophotes) basing on the microsatellite technology [PDF]

open access: yes, 2015
动物的婚配制度影响着个体的繁殖成功率,直接关系到群体的遗传多样性和种群动态的发展变化,是保护遗传学和生态学领域中非常重要的研究内容。已有学者野外观察到黄嘴白鹭(Egrettaeulophotes)存在婚外交配(EPC)行为,然而,有关黄嘴白鹭的婚配制度、EPC的产生机制以及其是否会导致婚外父权(EPP)现象还未清楚。此外,许多集群繁殖的鸟类都存在种内巢寄生(CBP)现象,而关于黄嘴白鹭巢寄生行为的研究也尚未开展。因此,本研究围绕黄嘴白鹭的婚配制度问题,主要开展以下几方面研究: (1)对3种非损伤性样品 ...
戴宇飞
core  

Prospects for conserving freshwater fish biodiversity in the Anthropocene: A view from Southern China 人类世下淡水鱼类生物多样性保护的前景:以中国南方为视角

open access: yesIntegrative Conservation, Volume 3, Issue 4, Page 294-311, December 2024.
Freshwater biodiversity in China is threatened by multiple anthropogenic factors, and while there are some reasons to suppose it may be possible to bend the curve of biodiversity loss, the variety of threats and their likely interactions with ongoing climate change provide little basis for optimism. For example, the historic overexploitation of Yangtze
David Dudgeon
wiley   +1 more source

分断化した森林における鳥類による種子散布の実態把握 [PDF]

open access: yes, 2018
TesisIntroducción: Los datos obtenidos de los controles prenatales son fundamentales ya que ayudan a identificar a pacientes con mayor riesgo tanto obstétrico como perinatal, dado que durante la etapa del embarazo, hay muchos factores que juegan un rol ...
八木橋 勉, 安田 雅俊
core   +2 more sources

圈养赤麻鸭繁殖期的行为日节律及时间分配

open access: yes野生动物学报, 2013
2011年46月,在徐州金桥珍禽有限公司,采用全日制瞬时扫描法对繁殖良好的一对赤麻鸭在繁殖期的行为日节律及时间分配进行了研究,并用独立样本t检验进行了不同性别在繁殖各期行为的差异性分析。结果表明:繁殖的不同时期赤麻鸭行为时间分配存在明显的性别差异。繁殖前期雌雄赤麻鸭之间的筑巢行为差异极显著 ...
陈雁飞   +5 more
doaj  

新疆欧夜鹰繁殖生态初报 [PDF]

open access: yes, 2008
欧夜鹰(Caprimulgus europaeus)属夜行性鸟类。广泛分布于新疆荒漠地区,如乌鲁木齐、阿勒泰、克拉玛依、昌吉州、吐鲁番、哈密、阿克苏、库尔勒、喀什等地区(Ma,2001 ...
张新民, 梅宇, 胡宝文, 马鸣
core  

Adivasi (Tea Tribe) worldviews of living close to wild Asian elephants in Assam, India

open access: yesConservation Biology, Volume 38, Issue 6, December 2024.
Abstract In Assam state, northeastern India, human–elephant conflict mitigation has included technocentric measures, such as installation of barriers, alternative livelihoods, and afforestation. Such measures treat conflict as a technical problem with linear cause–effect relations and are usually ineffective over the long term because they do not ...
Sayan Banerjee   +2 more
wiley   +1 more source

东方白鹳繁殖期能量收支对策

open access: yes野生动物学报, 2013
在笼养东方白鹤繁殖研究的基础上,对其能量分配进行了进一步研究,结果表明:笼养东方白鹳繁殖期,雌鹳和雄鹳的可代谢能摄入率无显著差异;采食量在繁殖期与非繁殖期差异很大 ...
马雪峰, 田秀华, 黄海涛
doaj  

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