搜索结果: 31-45 共查到“知识库 动物分类学”相关记录834条 . 查询时间(3.464 秒)
Histology of the androgenic gland in Eriphia verrucosa (Forskål, 1775) (Decapoda, Brachyura)
Decapoda crab Eriphia verrucosa androgenic gland
2010/3/24
This study investigated the histology of the androgenic gland in Eriphia verrucosa (Forskål, 1775). The results obtained with light microscopy show that the androgenic gland in this species cons...
New records of Leptostracans (Crustacea, Phyllocarida) from the eastern Mediterranean
Leptostraca Nebalia eastern Mediterranean distribution new records
2010/3/24
Knowledge about leptostracans from the Mediterranean Sea is still scarce. Examination of samples collected from the Aegean Sea off Turkey and from Cyprus in the eastern Mediterranean Sea revealed new ...
The occurrence of the subgenus Microlaccobius Gentili in Turkey (Coleoptera: Hydrophilidae, Laccobius), with taxonomic notes
Coleoptera Hydrophilidae Laccobius Microlaccobius taxonomy new record Turkey, Palaearctic
2010/3/24
Distributional data and the chorotype of all known taxa of Turkish species of the subgenus Microlaccobius Gentili, 1974 are summarized. The taxonomic position of Laccobius gracilis persicus Gentili, 1...
Verdanus artvinensis (Hemiptera: Cicadellidae), a new leafhopper species from northeastern Turkey
Hemiptera, Cicadellidae, Deltocephalinae, Verdanus, leafhopper, new species, Turkey
2010/3/24
Verdanus artvinensis n. sp. from northeastern Turkey is described and illustrated. The main characteristics of this species are compared with those of V. pazoukii (Dlabola, 1980), a closely related sp...
A contribution to the tachinid flies of the subfamilies Exoristinae and Tachininae (Diptera: Tachinidae) from Fars province, Iran
Diptera Tachinidae Iran Fars distribution
2010/3/24
Data are given on the distribution of 40 species belonging to the subfamilies Exoristinae and Tachininae that were collected by the first author in Fars province, Iran, during 2006-2007. In all, 22 sp...
Review of the species of Gugolzia Delucchi and Steffan (Hymenoptera: Pteromalidae) in Europe and Turkey, with descriptions of new species
Gugolzia new species diagnosis distribution biology
2010/3/24
The species of Gugolzia (Hymenoptera: Chalcidoidea, Pteromalidae) in Europe and Turkey were reviewed, and an identification key for differentiating the species is provided. Newly discovered diagnostic...
东南亚大陆5种长吻松鼠的支系系统关系
长吻松鼠属 支系系统关系 东南亚
2016/7/20
基于Hennig 支系系统原理,本研究分析并编码了分布于东南亚大陆5 种长吻松鼠头骨及外形共计32 个性状特征,运用Paup 4.0b10 软件构建上述5 种的支系系统关系。结果显示:D. pyrrhomerus 和D. rufigenis 均为独立的有效种,D. lokriah 是Dremomys 中最早分化的类群,其次是D. pernyi; D. pyrrhomerus 与D. rufigen...
运用多变量形态度量学和框架结构形态学的方法,测量了采自滇池流域6个不同地点的149尾滇池金线鲃(Sinocyclocheilus grahami)的标本。应用多变量形态度量学分析,选择了20个框架结构性状和19个常规性状,进行主成成分分析。主成成分分析结果的散布图显示,6个不同地点的标本聚在一起没有分开,表明滇池金线鲃的各居群之间在可数性状和可量性状上均未表现出明显的差异,说明滇池金线鲃在形态上还...
[目的]调查驴肠道寄生圆线虫的种类,为圆线虫的分类研究和防治提供依据。[方法]2006~2007年检查和采集了河南省34头驴的肠道寄生圆线虫,在光学显微镜下进行形态学观察和种类鉴定。[结果]共鉴定出22种圆线虫,隶属于2亚科7属,其中副杯口属Parapoteriostomum Hartwich,1986仅发现1种,即真臂副杯口线虫Parapoteriostomum euproctus(Bo...
对大熊猫夏季栖居地植物群落种类组成进行承样调查,以聚类分析方法进行植物群落分类,并研究与大熊猫生境因子之间的相关性,结果表明;1.大熊猫夏季栖居地植物群落可分为3个群丛6个亚群丛2;.大熊猫夏季栖居地生境因子由于财北坡地形状导致的水湿分布与植物群落类型分布紧密有关;3.自然背景植的比较结果显示,南坡的夏季栖居地结构优于北坡。
陕西猕猴的栖息地和食物组成
猕猴 栖息地 食物 陕西
2009/11/11
认为猕猴在陕西仅分布于大巴山和米仓山,喜欢选择盆地农田带上缘及农田-灌丛-森林带和中山落叶阔叶林带下缘活动,海拔600-1500m之间,其间人迹罕致的悬崖峭壁中的灌木材和小禾木林,是猕猴最喜欢的栖息场所,无大迁移。随植物的物候期变化,取食植物的种类和部位也随之变化,共取食76种植物,104个部位。
环青海湖斑头雁种群数量动态模拟及趋势分析
斑头雁 青海湖 种群数量 动态模型
2009/11/10
斑头雁是青海湖候鸟中的优势种之一,其未来种群数量的变化对青海湖的保护决策具有重要作用。利用STELLA图形化建模软件,从动力学出发,构建了青海湖地区斑头雁种群数量变化的动态模型。在该模型中,根据前人和青海湖自然保护区对斑头雁的观测研究结果,设置了班头雁的交配、产卵、孵卵、育幼、迁入、迁出、死亡等过程的模型参数。根据斑头雁在青海湖的活动时间,设置以年为模拟单位,选取1/7为模拟步长,对未来25年的...
体外分步诱导猕猴胚胎干细胞为肝细胞
猕猴 胚胎干细胞 肝细胞 细胞因子
2009/11/10
采用分阶段诱导方法模拟肝细胞体内发育,建立体外诱导猕猴胚胎干细胞(rhesus monkey embryonic stem cells, rESCs)分化为成熟肝细胞的体系,对研究以ES细胞为基础的临床替代治疗人类晚期肝脏疾病具有重要的意义。将rESCs团块在含有10% FBS的DMEM培养基中悬浮培养11d,形成含有早期内胚层细胞的拟胚体(embryonic bodies, EB)并开始表达早...
2008年4—7月,在新疆北部对白冠攀雀巢址选择进行了研究。白冠攀雀的营巢习性特殊,巢呈囊袋状,结构甚为精致。对于白冠攀雀巢的研究,采用总面积调查法,进行地毯式的搜寻,并结合标图法对其进行标记,绘制分布图。研究结果共发现巢125个,营巢位于于临近湖泊、河流等水域附近的柳树、杨树、桦树等阔叶树上。营巢树种以柳树为主,占68.80%。巢的高度平均为(5.3±2.5)m,营巢于乔木的中下部(约1/3处)...