Results 41 to 50 of about 20,824 (277)
Wildlife Letters, EarlyView.In this study we analyze the role of phylogeny, environment, and community structure on sociality. Using structural equation modeling (SEM) we aim to quantify the direct and indirect impacts of variables on behaviors including social grouping, reproduction, and space use among Carnivora species.
Jessica Ward +3 more
wiley +1 more source
, 2012 目的筛选稀有鮈鲫HAN近交系遗传质量检测标记。方法采用鳞片活体移植和同工酶聚丙烯酰胺凝胶电泳法对稀有鮈鲫HAN近交系的遗传纯度进行检测。结果在免疫标记分析中,鳞片同体移植存活率为96.7%以上,野生群体移植存活率为7.4%,而HAN系F22鳞片异体移植的成功率为80%,显著高于野生群体。在生化标记分析中,在HAN系F22中无多态性位点,不同个体的同工酶谱呈现高度一致,在野生群体中有2个多态位点即est2和est3,多态位点的比例为15.56%。结论经过多代近亲交配 ...
曹文宣, 王伟, 王剑伟, 邵燕
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Wildlife Letters, EarlyView.This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang +8 more
wiley +1 more source
Genetic diversity of Noctiluca scintillans [PDF]
, 2016 夜光藻是一种常见的赤潮藻，在世界大部分近海海域均有分布。目前普遍认为夜光藻只有一个种，但还没有研究探索不同地理种群的夜光藻是否产生了种内变异。本研究通过单细胞PCR以及单细胞克隆文库的方法，比较了中国黄海、东海、南海，墨西哥湾以及阿拉伯海5个海域夜光藻核糖体基因的遗传多样性。主要研究结果如下： 1、发现22种ITS单倍型(n=103)，12种28S单倍型(n=25)，6种18S单倍型(n=31)；这3个基因的单倍型多样度(Hd)分别为0.824、0.670、0.557，核苷酸多样度(π)分别为0 ...
潘永柏
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
wiley +1 more source
野生动物学报, 2007 迁地保护的海南坡鹿种群可以分为野放、半野放和圈养等3种主要类型。野放种群个体数量最多,约占迁地保护种群个体总数的55．3％;其次为半野放种群,其个体数量占35．6％;圈养种群个体数量最少,只占9．1％。半野放是一种较为稳妥的坡鹿种群恢复方式。在海南坡鹿的迁地保护中,应该增加半野放种群个体数量。本文就海南坡鹿的迁地保护提出了7点保护管理及科学研究建议。
卢学理, 袁喜才, 李善元, 张海
doaj
, 2012 大头鲤(Cyprinus pellegrini)是一种云南高原湖泊特有的国家Ⅱ级重点保护鱼类。土著种大头鲤与外来种鲤(C.carpio)的渐渗杂交在星云湖野生种群中已经广泛发生。本研究结合形态和微卫星及线粒体DNA分析检测了螺蛳铺大头鲤原种种群的遗传现状。结果显示,螺蛳铺大头鲤样本所有个体在形态上位于大头鲤与鲤的参照样本之间;在微卫星因子对应分析中也显示,其位于大头鲤与鲤的参照样本之间,但与大头鲤参照样本较为相似;在线粒体DNA分析中显示,都具有鲤的单倍型 ...
唐卫星, 陈毅峰
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Devouring the Invaders: The Racial‐Ecological Politics of the Chinese Crayfish Trade in Kenya
American Anthropologist, EarlyView.ABSTRACT This article examines entanglements of ecology, race, and foodways at Lake Naivasha in Kenya. Nonnative Louisiana red swamp crayfish (Procambarus clarkii), first introduced to Kenya in the 1960s, were once viewed as invasive but are now sought after as a delicacy among Kenya's Chinese community.
Amanda Kaminsky
wiley +1 more source
Conservation Biology, EarlyView.Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero +5 more
wiley +1 more source
野生动物学报, 2014 应用种群管理软件SPARKS 1.6及PMX对中国黑叶猴圈养种群的现状进行了统计分析。截至2012年12月31日,黑叶猴谱系记录了574只个体,目前种群存活个体数量为318只,分布在34家动物园或机构中。圈养种群野外捕获个体主要来源于20世纪70～90年代,目前保持稳定状态。圈养出生个体数则一直保持上升状态,是维持黑叶猴圈养种群增长的主要来源,2012年圈养出生数量占种群总数的87.4%。种群周期增长率λ=1.042,性比M:F=1:1.04,目前种群中能够繁殖的个体共110只(♂48只,♀62只 ...
高喜凤
doaj