Results 51 to 60 of about 463 (161)
Avian influenza overview December 2023–March 2024
EFSA Journal, Volume 22, Issue 3, March 2024.Abstract Between 2 December 2023 and 15 March 2024, highly pathogenic avian influenza (HPAI) A(H5) outbreaks were reported in domestic (227) and wild (414) birds across 26 countries in Europe. Compared to previous years, although still widespread, the overall number of HPAI virus detections in birds was significantly lower, among other reasons ...
European Food Safety Authority +16 more
wiley +1 more source
Evaluating hybrid speciation and swamping in wild carnivores with a decision‐tree approach
Conservation Biology, Volume 38, Issue 1, February 2024.Abstract Hybridization is an important evolutionary force with a principal role in the origin of new species, known as hybrid speciation. However, ongoing hybridization can create hybrid swamping, in which parental genomes are completely lost. This can become a biodiversity threat if it involves species that have adapted to certain environmental ...
Laura Tensen, Klaus Fischer
wiley +1 more source
Journal of Anatomy, Volume 244, Issue 2, Page 205-231, February 2024.Intervertebral mobility and backbone properties were studied in 34 species of terrestrial carnivorans. Carnivorans that seize prey with their jaws (canids and hyaenids) are characterized by a significantly elongated neck and increased vertebral mobility in the sagittal and horizontal planes.
Ruslan I. Belyaev +5 more
wiley +1 more source
野生动物学报, 1999 紫貂（Martes zibellina）是季节性繁殖动物,每年只繁殖一次,一般在68月份发情,怀孕期9个月,其特点是胚泡的游离期特别长。紫貂性成熟较晚,笼养条件下2岁龄交配的雌貂,受孕率很低,通常只有40%60%产仔,最高80%。4岁龄以上雌貂,仍有10%15%的空怀率。人们饲养紫貂,目的在于获得质高价优的高质量毛皮 ...
张丽梅
doaj
Building national parks to protect key ecosystems in China
Biological Diversity, Volume 1, Issue 3-4, Page 193-198, December 2024.
Dehuang Zhu +3 more
wiley +1 more source
野生动物学报, 1985 紫貂（Martes zibellina L.）是栖息在高纬度地区的亚寒带针叶林和温带针阔混交林带的一种珍稀毛皮动物。我国对紫貂的人工驯养已有多年的历史,但由于紫貂在人工饲养条件下的性成熟晚、空怀率高,严重影响兽群的扩大。紫貂是季节性繁殖的动物,一年只有一个繁殖季节,即在6月中旬—8月初发情交配,翌年4—5月份产仔,妊娠期长达9个月左右。多年生活在这种环境下的动物便形成了对这种环境因素的适应 ...
马文忠
doaj
人工圈养紫貂(Martes zibellina)春季换毛序研究
野生动物学报, 2016 紫貂(Martes zibellina)是国家Ⅰ级重点保护动物,建立其人工圈养种群是迁地保护的重要手段。被毛是哺乳动物最主要的特征之一。紫貂每年春季和秋季两次换毛,研究紫貂人工圈养繁育地换毛的规律是深入了解在人工圈养条件下紫貂生物学特性的重要方面。本研究旨在通过对人工圈养紫貂的春季换毛的启动时间、结束时间、被毛的脱换顺序的观察,结合当地大连的昼夜长短变换(光周期)、最高气温、最低气温、平均气温等的关系,解释和掌握紫貂春季被毛脱换规律及其与之相关的诸影响因素。 研究结果表明:(1)紫貂春季换毛时 ...
顾丽雅 华 彦 莫举霞 王海滨 张 伟
doaj
Differentiation of three Martes species (M. martes, M. zibellina, M. foina) by tooth morphotypes
Comptes Rendus Palevol, 2015 Abstract We studied crown morphology of Martes foina , M. martes , and M. zibellina from different regions of the northern Eurasia and described its morphotypes. The following has been identified: three morphotypes for P3, eight morphotypes for P4, 16 morphotypes for M1, four morphotypes for i3, three morphotypes for p3, four morphotypes for p4 ...
Dmitriy Gimranov, Pavel Kosintsev
openaire +1 more source
ВОЗРАСТНАЯ И ПОЛОВАЯ ИЗМЕНЧИВОСТЬ ФОРМЫ ЧЕРЕПА СОБОЛЯ MARTES ZIBELLINA L.
Ширяева, Е.Л. +1 more
openalex +2 more sources
人工圈养紫貂(Martes zibellina)行为谱构建及行为节律研究
野生动物学报, 2015 2014年5月～2015年2月,采用全事件取样法和扫描取样法(scan sampling method)对人工圈养的8只紫貂进行行为学观察,定义了休息、运动、采食、排泄、警戒以及其他行为等行为谱。通过对雌雄紫貂在不同季节行为节律研究发现:除了睡眠行为、卧息行为和玩耍行为外,其他行为在时间分配上均表现出雄性高于雌性,卧息行为和其他行为时间分配雌雄之间差异性显著 ...
邹 婧 华 彦 王海滨 张 伟
doaj