Results 21 to 30 of about 1,459 (145)
豺属于犬科犬属,近些年来由于人为捕杀,野生豺的数量不断减少,被世界自然保护联盟列为濒危物种,在中国为国家Ⅱ级保护动物。为切实做好对豺的人工饲养和繁殖,本文以石家庄市动物园人工饲养的16只豺为研究对象,通过对豺的生物学特性以及人工圈养条件下的环境、行为、营养、繁殖等多方面进行分析总结,为更好地保护豺这一濒危物种提供依据。
王志永 张丽霞 张永宾
doaj +1 more source
Background – Hymenoptera envenomation with honey bee (Apis mellifera) and paper wasp (Polistes spp.) may cause life‐threatening anaphylaxis in dogs. In human patients, clinical history, intradermal testing (IDT) and measurement of allergen‐specific serological immunoglobulin (Ig)E (sIgE) are used to support a diagnosis of Hymenoptera venom ...
Hilary H. Chan +3 more
wiley +1 more source
Abstract Advancements in the field of reintroduction biology are needed, but understanding of how to effectively conduct translocations, particularly with snakes, is lacking. We conducted a systematic review of snake translocation studies to identify potential tactics for reducing postrelease effects. We included studies on intentional, human‐mediated,
Jonathan D. Choquette +3 more
wiley +1 more source
THE LABORATORY CULTURE AND REPRODUCTION of TWO IANCELETS IN XIAMEN [PDF]
国家自然科学基金(30570208);教育部高等学校博士学科点专项科研基金(20070384041 ...
吕小梅 +5 more
core +1 more source
对行为的定义和描述是定量开展行为学研究的前提与基础。通过对人工饲养环境下长江江豚行为的观察、记录和分析,定义和描述了长江江豚近40种行为。在此基础上,初步构建了人工饲养环境下长江江豚行为学研究所必需的行为谱,由活跃的水面行为、玩耍、索食、社群行为、性行为、休息、摩擦、杂类八个类别组成 ...
肖建强,王丁
core
Extent of threats to marine fish from the online aquarium trade in the United States
The global marine aquarium hobby is a multibillion‐dollar industry, largely driven by demand from the United States. Much of this trade occurs online. We web scraped 4 major US‐based e‐commerce platforms selling marine aquarium fish to determine the retail price and source (wild capture, aquaculture, or both) of 13 families of ray‐finned marine fish ...
Bing Lin +6 more
wiley +1 more source
Functions of DHP and its nuclear receptor on reproductive neuroendocrine in zebrafish (Danio rerio) [PDF]
本文研究了DHP对野生型和孕酮核受体敲除纯合型两种类型雄性斑马鱼垂体中促性腺激素β亚基基因(fshb和lhb)、脑中多巴胺合成限速酶酪氨酸羟基化酶基因(th2)及多巴胺二型受体基因(drd2a和drd2b)和促性腺激素释放激素基因(gnrh2和gnrh3)mRNA表达的影响。主要研究结果如下: 1.野生型雄性斑马鱼垂体中促性腺激素β亚基基因(fshb和lhb)mRNA表达呈现周日变化趋势,可分为基础表达期、上升表达期和高峰表达期3个期,高峰表达期的mRNA表达量显著高于其它2个期 ...
王翠丽
core
We profiled nutritional and physiological markers in captive sifakas, endangered primates from Madagascar, managed in expansive, non‐native forest enclosures. Variation in many markers reflects freely foraged diets and the energy required to maintain homeostasis under more naturalistic conditions.
Lydia K. Greene +5 more
wiley +1 more source
Preliminary Studies on the Nestling Growth,Hatching and Reproductivity of Three Specices of Herons [PDF]
本实验于2006~2008年间在厦门的鸡屿、大屿、大兔屿,漳浦的菜屿列岛和福鼎的日屿岛初步调查了黄嘴白鹭(Egrettaeulophotes)、白鹭(Egrettagarzetta)和池鹭(Ardeolabacchus)的繁殖生态,取得了三种鹭的窝卵数、卵的大小、孵化率和成活率等生物学数据,对白鹭进行了鹭鸟卵和雏鸟的识别实验,对白鹭和池鹭研究了窝卵数人为改变对亲鸟繁殖行为及雏鸟成活的影响,对黄嘴白鹭卵进行了人工孵化和雏鸟人工养殖的探讨。 三种鹭的窝卵数分别是白鹭3.69±0.70枚(n=16),池鹭3 ...
刘华全
core
Background – Recurrent urticaria is common in horses. The pathophysiology is poorly understood and treatment options are limited. Often only glucocorticoids are effective for controlling clinical signs, albeit with potential adverse effects. Studies investigating new treatments need a validated objective scoring system for the grading of skin lesions ...
Katharina Birkmann +5 more
wiley +1 more source

