Results 41 to 50 of about 13,047 (192)

Hobbyist preferences for pet freshwater turtles

open access: yesConservation Biology, EarlyView.
Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao   +7 more
wiley   +1 more source

圈养野生动物营养研究进展

open access: yes野生动物学报, 2011
动物营养学是一门阐明营养物质摄入与生命活动之间关系的科学。目前,动物营养学在家畜家禽养殖研究上较为深入,而在圈养野生动物中只在近几十年才取得一些成果。本文主要在野生动物营养研究方法、野生动物营养评价方法和圈养野生动物营养需求三个方面进行阐述,并结合家畜家禽的研究进展进行综述。很多野生动物营养研究是基于家畜家禽的研究,但野生动物又有别于家畜家禽,因此圈养野生动物营养的科学与均衡应该是野生动物饲养工作中的最主要问题。
谢春雨
doaj  

Internet Negative News Coding for Classification and Key Word for Retrieval Research [PDF]

open access: yes, 2016
与区域相关的网络负面新闻信息逐渐成为了区域内执政者维护区域媒介形象和危机管理的焦点,因此对负面新闻信息的分类和检索就显得意义重大,而开发高质量的负面新闻信息编码分类工具和检索工具则是进行负面新闻信息分类和检索的关键。为解决负面新闻信息分类与检索这两个问题,笔者做了两项研究:研究一是运用扎根理论,对混合抽样所得的6626条负面新闻标题进行了归纳,力图得到涉及区域媒介形象的网络负面新闻信息编码分类工具、和分类类目;研究二是对6626条负面新闻信息进行关键字词的归纳 ...
杨旭彬
core  

Assessing the integration of social marketing principles in ivory demand management interventions in China and Southeast Asia

open access: yesConservation Biology, EarlyView.
Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown   +2 more
wiley   +1 more source

论野生动物保护法的实施

open access: yes野生动物学报, 1993
《中华人民共和国野生动物保护法》已经颁行五年。这五年来,野生动物主管部门依照法律规定进行了有成效的工作,非法捕猎和倒卖国家重点保护野生动物及其产品的违法犯罪活动,慑于法律的威严而有所收敛,广大人民群众对野生动物保护的法律意识也有所提高,然而,在有些野生动物产区,多种野生动物的蕴藏量还在不断下降;野生动物的栖息环境仍在遭到破坏 ...
张明久, 张明石
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  

The collective application of shorebird tracking data to conservation

open access: yesConservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison   +71 more
wiley   +1 more source

Effects of FGF on the growth and development of Echinococcus multilocularis and its molecular mechanism [PDF]

open access: yes, 2015
泡状棘球蚴病是由多房棘球绦虫续绦期幼虫引起的一种严重威胁人类生命安全的人兽共患寄生虫病,泡球蚴在宿主体内的生长发育过程受到宿主生长因子的影响。本文在实验室成功构建的泡球蚴体外培养体系的基础上,探讨宿主成纤维生长因子FGF与泡球蚴生长发育的相互关系,并初步阐述了FGF通过调控泡球蚴体内的ERK信号通路影响泡球蚴生长发育的分子机制。本文主要包括以下内容: (1)FGF影响体外培养泡球蚴的生长过程。分别从FGF影响泡球蚴囊泡的存活率、生长率来阐述FGF对于泡球蚴的生长过程的影响。在有血清和无血清培养液中 ...
王亮
core  

Renewed coexistence as a conceptual reframing of animal reintroductions to foster sustainable human–wildlife coexistence

open access: yesConservation Biology, EarlyView.
Abstract Wildlife reintroductions are socioecological processes entailing the intentional movement of organisms by people. In animal reintroductions, there is growing recognition of the importance of human dimensions and efforts to integrate these into reintroduction projects. To conceptually reframe reintroductions as processes of renewed coexistence (
Roger Edward Auster   +3 more
wiley   +1 more source

“中国野生动物之乡”命名活动

open access: yes野生动物学报, 2012
野生动物是自然生态系统的重要组成部分,在促进人与自然和谐发展、维护生态平衡等方面发挥着重要作用。为了加强野生动物资源的保护,调动野生动物栖息地地区公众保护鸟类的积极性,提高公众野生动物保护的意识,促进人口、资源、环境和经济的协调发展,中国野生动物保护协会自2004年起在全国组织开展了"中国野生动物之乡"命名活动,受到了社会各界的广泛欢迎。截止2011年8月,中国野生动物保护协会共在全国23个省(区、市)命名了50个"中国野生动物之乡"。作为野生动物保护宣传的新模式,"中国野生动物之乡 ...
梦梦, 尹峰
doaj  

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