期刊文献+
共找到10篇文章
< 1 >
每页显示 20 50 100
湘江中游江段螺类的种类组成及区系分析 被引量:9
1
作者 刘俊 胡自强 《生命科学研究》 CAS CSCD 2006年第3期248-251,共4页
报道了湘江中游江段螺类的调查结果,计有螺类31种(其中5种为湖南省新记录),分别隶属于腹足纲6科11属,其中主要是田螺科的种类.对它们的种类组成、区系、种群大小、分布与栖息环境的关系进行了分析,并讨论了城镇污水未经处理直接排放及... 报道了湘江中游江段螺类的调查结果,计有螺类31种(其中5种为湖南省新记录),分别隶属于腹足纲6科11属,其中主要是田螺科的种类.对它们的种类组成、区系、种群大小、分布与栖息环境的关系进行了分析,并讨论了城镇污水未经处理直接排放及修河拦坝对螺类生存环境的影响. 展开更多
关键词 暖足/淡水螺 分布 区系 湘江中游
下载PDF
湛江硇洲岛沿岸的腹足类动物 被引量:4
2
作者 杨大伟 《怀化学院学报》 1995年第2期64-68,共5页
本文报道了湛江硇洲岛沿岸的腹足类(螺类)软体动物的调查结果,计有螺类83种,分别隶属于腹足细的4目,35科,并根据丰度进行了分析.
关键词 硇洲岛 腹足/螺 丰度
下载PDF
Two newly recorded species of the genus Itaquascon(Tardigrada;Hypsibiidae) from China 被引量:6
3
作者 王怡婷 王立志 《Journal of Forestry Research》 SCIE CAS CSCD 2008年第1期67-68,共2页
This paper reports two newly recorded species, Itaquascon placophorum Maucci, 1972 and Itaquascon umbellinae Barros, 1939, of the genus Itaquascon (Tardigrada; Hypsibiidae) from China in the first time. The specimen... This paper reports two newly recorded species, Itaquascon placophorum Maucci, 1972 and Itaquascon umbellinae Barros, 1939, of the genus Itaquascon (Tardigrada; Hypsibiidae) from China in the first time. The specimens of Itaquascon placophorum were collected from Tsinling Mountains (33°28′N, 108°29′E) at 2,040 m above the sea level and those ofltaquascon umbellinae from Taibai Mt. (34°21′N, 107°39′E) at 1,500 m above the sea level. All specimens are deposited at the College of Life Sciences, Shaanxi Normal University, China. 展开更多
关键词 TARDIGRADA TAXONOMY new record China
下载PDF
清代通俗史学发展及其时代特征——在鉴学视阈内
4
作者 王彦霞 《北方论丛》 CSSCI 北大核心 2013年第1期100-104,共5页
中国古代通俗史学源远流长,但其著述之极大丰富则在明清时期。在诸多著述中,由《资治通鉴》产生的通俗史学著作独树一帜。在通鉴学领域,清代通俗史学一方面承继前代通俗史学余波而来,一方面又因时代和学术背景不同,具有明显的时代特征... 中国古代通俗史学源远流长,但其著述之极大丰富则在明清时期。在诸多著述中,由《资治通鉴》产生的通俗史学著作独树一帜。在通鉴学领域,清代通俗史学一方面承继前代通俗史学余波而来,一方面又因时代和学术背景不同,具有明显的时代特征。较明代而言,具有更自觉的史学普及意识。在篇幅上短小精悍,体例上灵活多样。在叙事方面,则简洁明了,更加通俗易懂。 展开更多
关键词 通鉴学 通俗史学 鉴”史书
下载PDF
Study on the Bradybaenid Landsnails in NW Sichuan (Gastropoda:Pulmonata:Stylommatophora)
5
作者 吴岷 《Zoological Research》 CAS CSCD 北大核心 2002年第6期504-513,共10页
A new species Pseudiberus (Pseudiberus) maoensis sp.nov.was proposed,and the first dissection study was carried out upon Bradybaena (Bradybaena) pseudocampylaea (Moellendorff),Bradybaena (Bradybaena) sueshanensis Pils... A new species Pseudiberus (Pseudiberus) maoensis sp.nov.was proposed,and the first dissection study was carried out upon Bradybaena (Bradybaena) pseudocampylaea (Moellendorff),Bradybaena (Bradybaena) sueshanensis Pilsbry,and Bradybaena (Bradybaena) controversa monotaeniata Pilsbry.All examined specimens as well as types are housed in the Institute of Zoology,the Chinese Academy of Sciences,Beijing. 展开更多
关键词 Helicoidea Bradybaenidae NW Sichuan Malacofauna New species
下载PDF
孑遗落叶大乔木——连香树
6
作者 庞宗汉 贺天顺 《河南林业》 1990年第2期38-38,41,共2页
连香树,土名叫子母树。是落叶阔叶大乔木,属于原始花被亚纲类植物;和银杏、红豆杉、珙桐等树同属冰川纪以前的孑遗树种;被国家列为二级重点保护树种。
关键词 连香树 大乔木 重点保护 红豆杉 四道沟 孑遗 落叶 银杏 树种 纲类
下载PDF
History of study,updated checklist,distribution and key of scorpions (Arachnida:Scorpiones) from China 被引量:6
7
作者 Zhi-Yong DI Zi-Zhong YANG +2 位作者 Shi-Jin YIN Zhi-Jian CAO Wen-Xin LI 《Zoological Research》 CAS CSCD 北大核心 2014年第1期3-19,共17页
This review describes the history of taxonomic research on scorpions and provides an updated checklist and key of the scorpions currently known in China. This checklist is based on a thorough review of the extant lite... This review describes the history of taxonomic research on scorpions and provides an updated checklist and key of the scorpions currently known in China. This checklist is based on a thorough review of the extant literatures on scorpion species whose presence has been confirmed in China through field expeditions and examination of scorpion collections, excepting a few members that have no clear distribution or are currently in doubt. Totally, the scorpion fauna of China consists of 53 species and subspecies belonging to 12 genera crossing five families, with 33 species(62.3%) and one genus being recorded as endemic. Additionally, identification key and the distribution of scorpions from China are provided. 展开更多
关键词 Scorpion Taxonomy CHECKLIST KEY DISTRIBUTION China
下载PDF
关于维数的纲性
8
作者 丰德军 吴军 《科学通报》 EI CAS CSCD 北大核心 1997年第6期587-590,共4页
在分形集的理论与应用研究中,下述两集类占有重要的地位,其一是正则集(即Hausdorff维数与填充维数相同的集),由于具有很好的性质而受到人们的重视;其二是在应用中起重要作用的Bouligand维数存在的集合,一个自然的问题是如何度量上述两... 在分形集的理论与应用研究中,下述两集类占有重要的地位,其一是正则集(即Hausdorff维数与填充维数相同的集),由于具有很好的性质而受到人们的重视;其二是在应用中起重要作用的Bouligand维数存在的集合,一个自然的问题是如何度量上述两集类的“大小”.本文利用纲性回答了上述问题,主要结论为定理1. 展开更多
关键词 维数 纲类 分形集 豪斯道夫维数
原文传递
Complete mitochondrial genome of Nanorana pleskei (Amphibia: Anura: Dicroglossidae) and evolutionary characteristics 被引量:1
9
作者 Guiying CHEN Bin WANG +2 位作者 Jiongyu LIU Feng XIE Jianping JIANG 《Current Zoology》 SCIE CAS CSCD 北大核心 2011年第6期785-805,共21页
The complete mitochondrial genome of Nanorana pleskei from the Qinghai-Tibet Plateau was sequenced. It includes 17,660 base pairs, containing 13 protein-coding genes, two rRNAs and 23 tRNAs. A tandem duplication of tR... The complete mitochondrial genome of Nanorana pleskei from the Qinghai-Tibet Plateau was sequenced. It includes 17,660 base pairs, containing 13 protein-coding genes, two rRNAs and 23 tRNAs. A tandem duplication of tRNAu^t gene was found in this mitochondrial genome, and the similarity between the two tRNAMet genes is 85.8%, being the highest in amphibian mitochondrial genomes sequenced thus far. Based on gene organization, 24 types were found from 145 amphibian mitochondrial genomes. Type 1 was present in 108 species, type 11 in 11 species, types 5, 16, 17, and 20 each in two species, and the others each present in one species. Fifteen types were found in Anura, being the most diversity in three orders of the Lissamphibia. Our phylogenetic results using 11 protein-coding gene sequences of 145 amphibian mitochondrial genomes strongly support the mo- nophyly of the Lissamphibia, as well as its three orders, the Gymnophiona, Caudata, and Anura, among which the relationships were ((Gymnophiona (Caudata, Anura)). Based on the phylogenetic trees, type 1 was recognized as the ancestral type for am- phibians, and type 11 was the synapomorphic type for the Neobatrachia. Gene rearrangements among lineages provide meaning- ful phylogenetic information. The rearrangement of the LTPF tRNA gene cluster and the translocation of the ND5 gene only found in the Neobatrachia support the monophyly of this group; similarly, the tandem duplication of the tRNAMet genes only found in the Dicroglossidae support the monophyly of this family 展开更多
关键词 Nanorana pleskei Complete rnitochondrial genome Tandem duplication of tRNAMet genes Mitochondrial genometype PHYLOGENETIC AMPHIBIA
原文传递
Novel insights into the historical biogeography of the streak-breasted scimitar babbler complex (Aves: Timaliidae: Pomatorhinus ruficollis complex) 被引量:1
10
作者 Sushma REDDY Arpad S. NYARI 《Current Zoology》 SCIE CAS CSCD 2015年第5期910-921,共12页
The Streak-breasted Scimitar Babblers of the Pomatorhinus ruficollis species complex are found in most of the forested habitats across southern and eastern Asia. The diversification history of this group is obscured b... The Streak-breasted Scimitar Babblers of the Pomatorhinus ruficollis species complex are found in most of the forested habitats across southern and eastern Asia. The diversification history of this group is obscured by high plumage variation across populations and conflicting genetic signal across loci. We combined genetic and geographic data from several recent studies to investigate how these species diversified across China using both phylogenetic and ecological niche modeling analyses. These two lines of evidence are consistent in showing that two well-sampled species, P. reconditus and P. nigrostellatus, in central and southern China respectively, likely experienced a history of isolation and expansion as suitable habitat contracted during the last interglacial and expanded in patchy extent during the glacial maximum. The genetic analysis showed that populations of P. nigrostellatus on Hainan Island are very similar to the ones in nearby mainland southern China. We recovered two well-supported clades within P. reconditus that were not geographically structured with both containing individuals from the same localities across central China. This phylogenetic result corresponded to the ecological niche models that showed expansion from refugia since the last interglacial. This study illustrates the value of using an integrative approach and detailed geographic sampling to help understand the recent diversification of birds in China [Current Zoology 61 (5): 910-921, 2015]. 展开更多
关键词 SONGBIRDS Asia Ecological niche modeling PHYLOGENETICS Babblers
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部