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Evolution of deceit by worthless donations in a nuptial gift-giving spider
Paolo Giovanni GHISLANDI,Mafia J. ALBO,Cristina TUNI,Trine BILDE - 动物学报(英文版)文章来源: 万方数据 -
Sexual deception: Coevolution or inescapable exploitation?
Jussi LEHTONEN,Michael R. WHITEHEAD[ - 动物学报(英文版)文章来源: 万方数据 -
来自共生微生物的鞘脂类调节宿主肠道自然杀伤T细胞的内稳态
益生菌与哺乳动物肠道的协同进化从根本上改变了哺乳动物的生理功能.An等报道,肠道脆弱拟杆菌(Bacteroides fragilis)通过提供独特的抑制性鞘脂类(sphingolipids)来补充宿主的内源性脂质抗原环境,从而调节宿主体内恒定型自然杀伤T细胞(invariant natural killer T cells,iNKT细胞)的内稳态.这个过程发生在生命的早期,并能有效地阻碍新生儿发育过程中iNKT细胞的增殖,因此结肠的iNKT细胞总数到成年期受到限制,使宿主免于罹患实验性iNKT细胞介导的、由噁唑酮诱导的郑媛媛 - 中国病理生理杂志文章来源: 万方数据 -
论发明人的"个体选择"
对比自然选择,在技术进化过程中,常见的选择来自于社会选择.相比于社会的群体选择,发明人的个体选择同样重要.发明人的选择实现了可表达的新技术基因的形成,影响着技术进化的进程.发明人的选择受其目标准则的影响,与发明人的自身能力素质和外部的社会环境息息相关.要实现国家整体技术水平的提升,必须要重视发明人的工作,应从整体环境营造入手,为发明人提供做出创新性工作的有效空间.杨中楷,徐梦真,韩爽 - 科学学研究文章来源: 万方数据 -
音乐美学理论与实践课程应协同开设
专业艺术院校中,由于教学资源足够丰富,音乐美学与音乐表演课程一般是协同开设的.但地方院校由于师资原因或是教学课程设置的不科学性和主观性导致了美学教育的滞后现象.殊不知,根据系统理论,美学理论和表演课程两者的协同发展有利于锻炼学生的理论意识,提升学生的审美水平,有利于指导学生的实践活动,从而促进学生表演水平的提高,有利于建立对理论学科的兴趣,为学士论文的写作积累语汇.谢柠名 - 音乐创作文章来源: 万方数据 -
城市系统中的竞争与协同机制研究
本文在剖析城市自组织系统耗散结构特征的基础上,重点从区域尺度和城市尺度两种空间尺度解析城市系统自组织演化的驱动力:竞争与协同.研究表明竞争与协同两种力量共同决定城市系统的发展演化,协同性竞争(良性的竞争)有利于城市系统的发展,推进城市可持续发展;反之,过度竞争或竞争乏力则会导致产生无序状态的产生,阻碍城市的发展.杨亮洁,杨永春,王录仓 - 人文地理文章来源: 万方数据 -
山地浅层地温资源协同利用研究
梳理人类对山地浅层地温资源利用的空间谱系与历史经验,提出由地源热泵系统、竖向恒温单元集合以及其它辅助体系所共同构建的协同利用策略,通过实例估算,证明协同利用策略在建筑节能、资金投入、土地利用、技术推广等方面的应用价值.杨欣,刘向晖,万博 - 建筑学报文章来源: 万方数据 -
Habitat-dependent diversification and parallel molecular evolution: Water scavenger beetles as a case study
Habitat shift is a key innovation that has contributed to the extreme diversification of insects. Most groups are well-adapted to more or less specific environments and shifts usually only happen between similar habitats. To colonize a pro- foundly different habitat type does not only present ecological opportunities but also great challenges. We used Hydrophiloidea (water scavenger beetles) as a system to study transitions between terrestrial and aquatic environments. We estimated the diversi- fication rate of different clades using phylogenetic trees based on a representative taxon sampling and six genes. We also investi- gated possible evolutionary changes in candidate genes following habitat shifts. Our results suggest that the diversification rate is relatively slow (0.039-0.050 sp/My) in the aquatic lineage, whereas it is distinctly increased in the secondarily terrestrial clade (0.055-0.075 sp/My). Our results also show that aquatic species have a G (Glycine) or S (Serine) amino acid at a given site of COI, while terrestrial species share an A (Alanine) amino acid with terrestrial outgroups. This indicates that habitat factors may create selection pressure on the evolution of functional genes and cause homoplasy in molecular evolution [Current Zoology 60 (5): 561-570, 2014 ]Ke-Qing SONG,Huai-Jun XUE,Rolf G BEUTEL,Ming BAI,Dong-Ju BIAN,Jie LIU,Yong-Ying RUAN,Wen-Zhu LI,Feng-Long JIA,Xing-Ke YANG - 动物学报(英文版)文章来源: 万方数据 -
Ecological and evolutionary connections between morphology, physiology, and behavior
1 Introduction
Phenotype variation within populations both provides the raw material for and is the product of evolutionary change. An individual's phenotype, defined as the amalgamation of morphology, physiology, and behavior, is highly complex. It has been common to try to isolate each of these aspects of phenotype rather than directly examine their integration. For example, despite the demonstrated importance of single aspects of phenotype for acquiring mates it is well known that signal traits are not evaluated in isolation, but rather in conjunction with associated behaviors, and sometimes with other signal traits (Moiler and Pomiankowski, 1993; Candolin, 2003;Rebecca J. SAFRAN,Maren N. VITOUSEK,Guest Editors - 动物学报(英文版)文章来源: 万方数据 -
顾客-企业知识协同演化研究-基于主体策略和网络结构更新视角
用复杂网络模型构造了顾客-企业知识协同网络,根据主体采取的不同策略研究动态网络上的主体行为,且模型引入了演化博弈思想,即将主体策略行为与网络结构相结合.研究表明:(1)固定策略选择时,具有更多积极主体的网络更有利于知识协同;(2)主体策略更新速度处于中间水平时,知识协同能达到较理想的效果;(3)结构更新速度较快时,更有利于知识协同;(4)较快的策略更新速度伴随较快的结构更新速度有助于达到较好的知识协同效果.卜心怡,张辰鸿,桑滨 - 科学学研究文章来源: 万方数据

