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1.
魏刚 《动物分类学报》1998,23(4):342-345
本记述丽棘虫属一新种,即重庆丽棘虫Brentisentis chongqingensis sp.nov.与其它相似种进行了比较。新种体呈梭形;吻部细长,雄虫的吻大小为(1.58 ̄1.78)mm×(0.14 ̄0.20)mm;吻钩12纵行,每行有吻钩22 ̄24个;吻腺很长,延伸到身体后部;前、后精巢的大小分别为(0.28 ̄0.61)mm×(0.24 ̄0.35)mm,(0.25 ̄0.56)mm×(0.  相似文献   

2.
本文描述采片黑龙江省的蝇科中棘蝇属Phaonia R.-D,1830二新种;黄尾棘蝇Phaonia flavicauda sp.nov.,黑荡棘蝇Phaonia nigrierrans sp.nov。  相似文献   

3.
薛万琦 《动物学研究》2000,21(3):227-230
报道了采自云南省的蝇科棘蝇属Phaonia R.-D.3新种,分别命名为明斑棘蝇Phaonia luculentimacula sp.nov.、刺尾棘蝇Phaonia spinicauda sp.nov.和毛盾棘蝇Phaonia villiscutellata sp.nov.,均隶属于棕斑棘蝇种团Ph.fuscata-group。模式标本保存于沈阳师范学院昆虫研究所。  相似文献   

4.
川藏地区棘蝇属六新种(双翅目:蝇科)   总被引:2,自引:0,他引:2  
本文报道川藏地区棘蝇6新种,1.暗基棘蝇Phaonia nigricoxa sp.nov,2.宽条棘蝇Phaonia latistriata sp.nov.3.似唇棘蝇Phaonia chilitica sp.nov,4.瘤叶棘蝇Phaonia tuberosuratyla sp.nov.,5.茂汶棘蝇Phaonia maowerensis sp.nov.6.平叶棘蝇Phaonia flatice  相似文献   

5.
从湖南两地的家鸭水肠中采集到2新种细小吸虫、经鉴定为:湘中棘缘吸虫,新种Echinoparyphium xiangzhongense sp.nov.,前宽后狭尖,头棘41-42,角刺4枚,子宫中卵1-3枚。隆回棘缘吸虫,新种Echinoparyphium longhuiense sp.nov.,舌形,头棘39枚,子宫中卵1-12枚。新种与近似种的主要特征进行了比较,讨论了建立新种的依据。  相似文献   

6.
棘口属吸虫一新种   总被引:1,自引:0,他引:1  
本记述采自寄生在我国陕西省洋县山区的濒危危鸟朱HuanNipponia nippon体内的棘口吸虫一新种,洋县棘口吸虫Echinostoma yangxianensissp.nor。,对新种的形态特征作详细的描述并与近似种进行了比较。  相似文献   

7.
本文记述采自山西北部山区的蝇科棘蝇属Phaonia R.-D-新种,命名为宁武棘蝇Phaonia ningwuensis sp.nov.,模式标本保存于山西省大同市地方病防治所。新种属于光泽棘蝇群Phaonia nymphaearun-roup,同欧洲种Phaonia wahlbergi Ringdah1,1930近缘,与后者区别是新种额宽约为后方两单眼外缘间距的4/5,间额约为一侧额宽的2倍,触  相似文献   

8.
本文记述采自山西北部山区的蝇科棘蝇属PhaoniaR.D.—新种。命名为宁武棘蝇Phaonianingwuensissp.nov.。模式标本保存于山西省大同市地方病防治所。新种属于光泽棘蝇群Phaonianymphaearumgroup,同欧洲种PhaoniawahlbergiRingdahl,1930近缘,与后者区别是新种额宽约为后方两单眼外缘间距的4/5,间额约为一侧额宽的2倍,触角第3节宽而短,长约为宽的15倍,下眶鬃达到单眼三角处,平衡棒黑褐色,后股具1列完整的后腹鬃。正模,山西省宁武县吴家沟,19870608,王明福采。  相似文献   

9.
冯炎 《动物学研究》1998,19(4):314-317
描述了采自中国四川的蝇科(Muscidae)棘蝇属(PhaoniaRobineau-Desvoidy,1830)3新种:钉棘蝇,新种Phaoniapattalocercasp.nov,回归棘蝇,新种Phaoniaredactatasp.nov.双耳棘蝇,新种Phaoniabiauriculatasp.nov。其中1种命名为回归棘蝇Phaoniaredactata,以示香港于1997年7月1日回归祖  相似文献   

10.
青藏高原几种黄芪和棘豆植物核型的初步研究   总被引:4,自引:3,他引:1  
对分布于西藏地区的棘豆属和黄芪属7个种植物的核型进行了研究,其中除小叶棘豆外其余6个种的核型均为道 次报道。结果如下:1.叶棘豆Oxytropis microphyllum(Pall)DC。普兰材料的体细胞染色体数目为2n=16,核型公式为2n=16=8m+8sm,属于1A型。2.冰川棘豆Oxytropis glacialis Benth.ex Bge。体细胞染色体数目为2n=16,核型公式为2n  相似文献   

11.
本文再次描述了中国云南省棘■科棘■属的二个新记录种,喜马拉雅棘■Onychiurushi-malayensis采自昆明;依田氏棘■O.yodai采自西双版纳,并描述了新的特征。前者以无肛针和具有雄性腹部器官为持征;后者以头部和腹部Ⅳ至Ⅵ节背面具有中间刚毛为特征。  相似文献   

12.
Abstract Two species of the genus Onychiurus (Collembolai Onychiuridae) new to China are re-described from Yunnan Province by giving new characters: Onychiurus hidayensis from Kunming and O. yodai from Xishuangbanna. The former is characteristic in lacking anal spines and having male ventral organ and the latter is remarkable in having dorsomedian setae on head and Abd. IV-VI.  相似文献   

13.
Xin Sun  Donghui Wu 《ZooKeys》2014,(425):99-111
A checklist of onychiurid species from the Wanda Mountains in China is presented. Eighteen species belonging to twelve genera have been found, including two new species. Bionychiurus qinglongensis sp. n. can be easily distinguished from other known species of the genus by the absence of pseudocelli on Th. I tergum and fewer number of vesicles in postantennal organ. Onychiurus heilongjiangensis sp. n. is diagnosed by pseudocellar formulae as 32/133/33352 dorsally and 3/011/31120 ventrally, parapseudocellar formula as 0/000/111001+1m, ratio of anal spine/unguis as 0.6, unguiculus without inner basal lamella, and male ventral organ absent.  相似文献   

14.
In this paper we provide microscopic and molecular evidence for the presence of an endosymbiontic bacterium in male and female gonads of the soil arthropod Onychiurus sinensis. The sequence of the gene encoding for the 16S rRNA shows that the bacterium is a member of the genus Rickettsia, and some anomalies presumably associated with the presence of these microorganisms have been detected. Although the Rickettsia found in O. sinensis has the smallest genetic divergence with Rickettsia bellii, the phylogenetic analysis fails to find support for a sister-group relationship between these two species, rather suggesting that most Rickettsia species/strains isolated in various arthropods have rapidly evolved and diversified in what appears to be a sudden burst of evolution.  相似文献   

15.
The feeding biology of the arctic collembolan Onychiurus arcticus (Tullberg) is described from West Spitsbergen, based on a combination of gut content analyses for field collected and microcosm-living animals, together with laboratory feeding trials. There was wide variation in the food items consumed by individual animals, reflecting the wide choice available in the environment. Most animals fed predominantly on living and dead bryophytes, detritus and to a lesser extent algal cells. Laboratory trials showed that O. arcticus feeds as a herbivore on a range of bryophyte species. The presence of dense aggregations below bird cliffs and elsewhere may reflect the distribution of particularly favourable microenvironments.  相似文献   

16.
The life cycle of a new microsporidium, Octosporea collembolae, from the fat body of naturally infected springtails, Onychiurus quadriocellatus, is described at light and electron microscope levels. The prevalence of infection and host-parasite relationships are discussed.  相似文献   

17.
In this study effects of previous intensive management on microorganisms and soil fauna were investigated. It was hypothesized that a former but now abandoned intensive management practice still causes negative effects years after conversion into conventional management.Two agricultural fields were investigated. Until 1990 one field (preINT) had been managed with the intensive crop hops (Humulus lupulus), whereas the second one (preCON) had been under crop rotation. In consequence the main difference between the two fields was the high copper load of preINT. In the period during this study both fields were cultivated the same way (1991: winter wheat, 1992: spring barley).Microbial biomass, species numbers and abundances of collembola as well as of earthworms were much lower in preINT in the first year of investigation. In 1992, earthworm biomass was still extremely low, whereas the microbial biomass and total collembola had reached the values of preCON. Between the collembola populations there were still distinct differences in species abundances. In preCON,Folsomia quadrioculata, Onychiurus armatus, and theMesaphorura krausbaueri group each made up about 1/4 of the total population. In preINT nearly 60% of the population consisted of theMesaphorura krausbaueri group, followed byIsotoma notabilis andOnychiurus armatus.Folsomia quadrioculata andIsotomiella minor in preINT exhibited extremely small abundances during the whole investigation period. Thus, in comparative field studies their abundances could serve as indicators for copper contamination.Supplementary microcosm studies had shown that severe reductions of earthworm numbers, especially with simultaneous high mesofauna abundances, will be accompanied by increased mineralization rates. Therefore changes in soil fauna composition caused by copper contamination could have pronounced effects on mineralization rates and nutrient fluxes.  相似文献   

18.
19.
Patchiness and compensatory growth in a fungus-Collembola system   总被引:3,自引:0,他引:3  
The compensatory growth potential of a grazed fungal biomass was mathematically expressed as a function of patchiness in its distribution and demonstrated in an experiment using the fungivorous collembolan Onychiurus armatus and the soil fungi Verticillium bulbillosum and Penicillium spinulosum. The model addresses the regrowth potential in relation to patch fragmentation, travelling time and consumption rate of the collembolan and the mean relative growth rate of the fungus. It suggests that the mean relative growth rate required for regrowth decreases with patch fragmentation and increases with the mean growth rate of the fungus. The experiments were performed with a system of soil-filled vials provided with fungi and collembolans. The size of the vials and the length of the tubes connecting them were varied to give different patch sizes and travelling times. The respiratory activity of fungi after grazing increased as a unit of mycelium was distributed into smaller connected vials. The slow growing species V. bulbillosum showed a greater but delayed response to grazing in comparison with the fast growing P. spinulosum. An increased travelling time delayed the growth response in both species.  相似文献   

20.
The carabid beetle Notiophilus preys readily on the collembolan Folsomia Candida Willem in very simple experimental conditions. Some features of this predator-prey system are outlined to emphasize its use as a teaching practical. Experiments with another potential collembolan prey, Onychiurus burmeisteri (Lubbock), are described in the context of developing the method for more advanced studies.  相似文献   

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