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中国斑芫菁后翅形态比较 总被引:2,自引:0,他引:2
选取中国斑芫菁属11个代表种,对比分析了它们的后翅形态特征; 以苹斑芫菁Mylabris calida Pallas, 1782为模式,探讨了斑芫菁属后翅的翅脉名称,并对其性状进行了描述。研究结果将斑芫菁属翅脉归纳为3种类型:1)南方型:东洋种,翅深褐色,各脉粗大,骨化程度高,皱褶多而明显;2)高原型:青藏高原特有种,翅乳白色,半透明,仅前缘和MP1+2形成明显的大翅室,余脉淡而不显,骨化程度低;3)北方型:为以上两种类型的中间过渡,古北种,翅褐色,各脉清晰,中度骨化。根据研究结果,初步探讨了斑芫菁属翅脉的形态进化。 相似文献
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通过对中国芫菁科5族11属19种(亚种)后翅翅脉、翅关节和翅基部综合特征的比较形态学研究,归纳了族级特征,并用Hennig 86(1.5)软件对其后翅综合特征进行支序分析得出它们之间初步的进化关系,即栉芫菁族Nemognathini+(齿角芫菁族Cerocomini+(豆芫菁族Epicautini+(绿芫菁族Lyttini+斑芫菁族Mylabrini)))。 相似文献
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在多年野外物种考察基础上,依据河北大学馆藏标本和文献资料,对河北省的芫菁种类进行分类和整理,共计9属24种,其中丽斑芫菁Mylabris(Chalcabris)speciosa(Pallas,1781)、四星栉芫菁Megatrachelus politus(Ge-bler,1832)、二斑狭翅芫菁Stenoria(Stenoria)fasciata (Faldermann,1835)和异色带栉芫菁Zonigis fortuccii Fairmaire,1887为河北省新纪录种,并编制了属、种检索表.记述了各种的地理分布. 相似文献
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本文报道新疆20种芫菁雄性外生殖器的比较研究。 研究结果表明:1.芫菁的雄性外生殖器主要由一个阳茎基和中间的一个阳茎组成,属于变异的三瓣型;2.不仅在外生殖器的结构上,在属,亚属和种间存在着明显差异,与外生殖器肌肉相联系的腹部第IX节背板和沟状小针突亦表现如此:3.上述结构特征同其它外部形态特征一样,可用在物种的鉴定分类上。 相似文献
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In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980. 相似文献
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