共查询到18条相似文献,搜索用时 78 毫秒
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记叙采自湖南省衡阳县gou嵝蜂的七纺蛛属一新种,gou嵝七纺蛛Heptathela goulouensis sp.nov.,及其变异型-雌蛛纳精器官的孪生现象。 相似文献
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记述采自香港的节板蛛科七纺蛛属一新种,定名为香港七纺蛛Heptyathelahongkongsp.nov.,以庆贺香港回归祖国。 相似文献
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我国南方八纺器蛛一新种:蜘蛛目:八纺蛛科 总被引:1,自引:1,他引:0
次坪八纺蛛,新种Liphistius cipingensis sp.nov.采自江西省井冈山次坪。正模♀保存于湖南师范大学生物系。 相似文献
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本文记述隅蛛属一新种和漏斗蛛属两新种:刺隅蛛,新种Tegenaria aculeata sp.nov.三角漏斗蛛,新种Agelena triangulata sp.nov.,小斑漏斗蛛,新种Agelena micropunetulata sp.nov.。 相似文献
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记述采自我国江苏省栖霞山和浙江省西天目山蚁微蛛属2新种:胫突蚁微蛛,新种Solenysa pronlrudens sp.nov.和圆斑蚁微蛛, 新种Solenyas circUlaris sp.nov. 相似文献
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记述我国暗蛛科隙蛛属1新种,即郴州隙蛛,新种Coelotes chenzhou sp.nov.。 相似文献
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中国吻额蛛属一新种(蜘蛛目:皿蛛科:微蛛亚科) 总被引:1,自引:1,他引:0
本文描述了作者1986年采自湖北省神农架林区的吻额蛛属Aprifrontalia一新种:膨大吻额蛛,新种Aprifrontalia afflata sp.nov.。目前,除本新种外,世界仅报道过1种:Aprifrontalia mascula,本新种雄蛛最显著的特征是:其额向前突呈吻状,触肢胫节前端甚膨大。外雌器形成一斜向下方的突起。模式标本保存于白求恩医科大学生物教研室。 相似文献
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用RAPD技术检测不同生态类型蜘蛛代表品种的基因组DNA多态性 总被引:2,自引:0,他引:2
蜘蛛有3种生态类型,即洞穴型、结网型和游猎型。利用RAPD技术检测3种生态类型蜘蛛的代表品种,即白额巨蟹蛛(游猎型)、漏斗蛛(结网型)、虎纹捕鸟蛛和七纺器蛛(洞穴型)的基因组DNA的多态性。用11个随机引物对3种生态类型的代表蜘蛛的基因组DNA进行扩增,平均每个品种观察到约22.5个标记,单个引物获得的标记在4~13个之间。实验结果经统计学分析表明,L纺器蛛和虎纹捕鸟蛛的随机扩增多态DNA共享度(F)高,在分子水平上进一步证实了同生态类型蜘蛛的亲缘天系最近,聚类结果表明,3种类型蜘蛛的总体演化趋势为:洞穴型 结网型—游猎型,与以往的形态学研究相符。 相似文献
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湖南八角科植物的研究 总被引:3,自引:1,他引:2
湖南八角科植物有10种1亚种,分布于44个县,多生长于海拔600~1600m的山地湿润常绿阔叶林中。本文依据湖南八角科植物的分类学研究,结合地理分布、植物区系、地理、气候和土壤资料,经分析和推论得知:(1)湖南八角科植物种质资源丰富,以中国特有成分为主,它们与毗邻省区的种类关系密切。(2)在湖南省内,大多数种类呈地理替代分布。(3)湖南八角科植物区系表现为多种区系成分的过度与汇集,即华中—华东—华南—滇黔桂四个区系成分的交汇、混杂和过度。(4)新生代的冰期和间冰期、湖南的地形和土壤、植物的遗传与变异和对环境的适应性选择是影响湖南八角科植物现代分布格局形成的原因。(5)湖南八角科植物的多数种类是从湖南西南以外地区迁移扩散而来,一些次生种类是在本省周边地区和周边省区分化形成。(6)湘西南地区是湖南八角科植物的现代分布中心、现代分化中心和现代原始类群的分布中心。 相似文献
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W. S. Bristowe 《Journal of Zoology》1976,178(1):1-6
These spiders resemble fossil spiders of the Carboniferous. Although they are unique in retaining several primitive characters it is thought best to include them in the sub-Order Mygalomorphae and to abandon the special sub-Order Liphistiomorphae.
The family Heptathelidae to include those species with seven instead of eight spinnerets as in the Liphistiidae is also abandoned.
The species Liphistius thorelli Sim. from Sumatra is regarded as a synonym of the other Sumatran species L. sumatranus Thor.
Eight species of Liphistius and two of Heptathela are now recognized. Their distribution is confined, according to present knowledge, to Burma, Thailand, Vietnam, China, Japan, Malaysia and Sumatra. This may provide useful evidence in the question, as yet unsettled, of the origin of south-east Asia in terms of continental drift.
A special visit has been paid to Sumatra to rediscover Liphistius sumatranus (of which only one specimen was found and described in 1879) to establish with certainty that it is distinct from the Malaysian L. desultor . This was achieved and the species are now compared.
Some biological observations are provided. 相似文献
The family Heptathelidae to include those species with seven instead of eight spinnerets as in the Liphistiidae is also abandoned.
The species Liphistius thorelli Sim. from Sumatra is regarded as a synonym of the other Sumatran species L. sumatranus Thor.
Eight species of Liphistius and two of Heptathela are now recognized. Their distribution is confined, according to present knowledge, to Burma, Thailand, Vietnam, China, Japan, Malaysia and Sumatra. This may provide useful evidence in the question, as yet unsettled, of the origin of south-east Asia in terms of continental drift.
A special visit has been paid to Sumatra to rediscover Liphistius sumatranus (of which only one specimen was found and described in 1879) to establish with certainty that it is distinct from the Malaysian L. desultor . This was achieved and the species are now compared.
Some biological observations are provided. 相似文献
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不同品种水稻秸秆的理化特性及酶解产糖的研究 总被引:1,自引:0,他引:1
本研究以不同品种水稻秸秆为原料,测定分析了三大主要组分纤维素、半纤维素和木质素含量及理化特性的差异,并分析对比了经碱预处理后酶解及直接酶解的产糖率差异。利用X-射线衍射仪测定分析了结晶度和晶粒尺寸的异同,红外光谱仪定性评估了特定基团的差异,扫描电镜观察分析了表面形态结构的差异。综合考虑理化特性和酶解产糖率结果,与a(常规水稻黄华占)相比,5种不同品种的超级杂交水稻秸秆中,b(杂交水稻Y两优1)、c(杂交水稻隆两优2010)和f(杂交水稻Y两优143)三个品种的秸秆材料比较适合作为酶解产糖的原材料。 相似文献