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1.
青海油田位于柴达木盆地西缘茫崖县内,尕斯湖周围,据油田工人反映蚊虫吸血骚扰严重,但查文献仅茫崖记载有背点伊蚊。为查明吸血骚扰昆虫情况,由中国石油天然气集团公司卫生处李华,青海油田防疫站许常平、景占良、许国琪和军事医学科学院许荣满组成的调查组,于1999年6月下?..  相似文献   

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2006年5~6月,在香港大帽山到大屿山的18个不同生境地点进行了蠓科昆虫的调查采集,共采获库蠓、蠛蠓和细蠓3吸血蠓属24种。本文报道了全国新纪录库蠓4种,并描述了潮湿蠛蠓Lasioheleahygroecia Yu,Liang et Chensp.nov.和扭曲蠛蠓Lasiohelea thyesta Yu,Chen et He sp.nov.二新种。调查结果显示台湾蠛蠓是香港地区白天多见的吸血蠓种,而珠海库蠓Culicoides zhuhaiensis Yu et Hao是从市区绿化地带到沿海林缘都有活动的吸血蠓种。  相似文献   

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宁夏双翅目蠓科昆虫研究   总被引:1,自引:0,他引:1  
为了研究掌握宁夏双翅目蠓科Ceratopogonidae昆虫,采用人帐诱法、畜诱法、灯诱法和网捕法对其种群组成和数量动态做了调查研究.研究获得宁夏蠓科4亚科6属40种,即细蠓亚科 Subfamily Leptoconopinae,细蠓属 Leptoconops Skuse 17种;毛蠓亚科 Subfamily Dasyheleinae,毛蠓属 Dasyhelea Kieffer 2种;铗蠓亚科 Subfamily Forcipomyiinae,铗蠓属 Forcipomyia Meigen 3种;蠓亚科 Subfamily Ceratopogoninae,库蠓属 Culicoides Latreille 16种,尼蠓属 Nilobezzia (Kieffer 1种和贝蠓属 Bezzia Kieffer 1种.在采获的标本中以细蠓属和库蠓属种类最多.是宁夏双翅目蠓科的主要构成者.银川平吉堡地区细蠓活动的盛季是在5月中旬至7月上旬,6月中旬为一年活动之最高峰;库蠓活动的盛季是在6月中旬至8月下旬,7月中、下旬为一年活动之最高峰;非吸血蠓活动盛季同库蠓,但一年中的活动高峰是在8月上旬.蠓虫几乎全天都有活动,但不同蠓种活动时域不同.库蠓是日出前和日落后1 h活动高峰的主要构成者,而白天蠓虫活动的高峰,确是以细蠓为主.细蠓的婚舞活动以上午为主,自然界细蠓受精率较低(53.85%),而马厩内受精率较高(94.34%).细蠓平均产卵30枚,产卵后平均寿命4.2天;孳生地主要为陆栖型和水陆过渡型,在地表湿润处其幼虫主要活动于2 cm厚范围.  相似文献   

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本文对我国部分地区吸血蠓类群落组成结构进行了分析,结果表明,库蠓是主要的吸血蠓属,种类多、分布广、优势种突出;细蠓在我要主要分布在西北地区,而蠛蠓则分布于南方的种类多于北方。群落多样性分析表明,我国南方地区蠓落多样性指数高于北方,优势集中性指数反映我国蠓类优势种由南方向北渐趋突出明显。Pearson′s相关性分析结果显示:南方地区间吸血蠓群落的相关值大,而北方地区间吸血蠓群落的相关值小。本文还对不同生境中吸血蠓类群落的特征进行了比较分析。  相似文献   

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本文首次报道澳门蠓科昆虫的采集记录,2005年11月30日在澳门采获7种蠓科昆虫皆为澳门特区新纪录,其中包括2个新种:圆额毛蠓新种Dasyhelea gongylophodaYu sp.nov.和林玲毛蠓新种D.linlingae*Yu sp.nov.。  相似文献   

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我国重要吸血双翅目昆虫区系的研究进展   总被引:1,自引:0,他引:1  
本文综述了我国不同生态地理区域内吸血双翅目昆虫的种类分布、吸血双翅目昆虫区系和虫媒病的关系、吸血双翅目昆虫区系研究的基本方法以及河北省吸血双翅目昆虫区系的现状等方面的研究进展,以期为预防和控制虫媒传染病,特别是应对突发性公共卫生事件中虫媒传染病和生物恐怖事件的发生,提供制定防控媒介昆虫预案的基本资料和科学依据。  相似文献   

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我国蠓科(Ceratopogonidae)昆虫的研究是中华人民共和国成立后才开始的,在世界蠓科昆虫研究进程中,整整晚了半个世纪。在我国医学昆虫研究中,也是起步很晚的类群。如1938年我国大陆蚊种已记录了12属100种(亚种),而在1940年我国蠓科仅记载1属1种(Wu,1940)。至1956年也仅百?..  相似文献   

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中国蠓科昆虫研究的发展(双翅目)   总被引:5,自引:1,他引:5  
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蠓科昆虫雄虫尾器是分类的重要依据,但长期以来在普通光学显微镜检视中常存有结构方面的疑点,本文在运用光学显微镜照相、显微镜投影绘图同时,应用扫描电子显微镜对郧县细蠓和台湾蠛蠓尾器的形态结构进行比较观察,全面、准确地显示了郧县细蠓和台湾蠛蠓雄虫尾器的真实结构及其形态特征。并对3种方法进行了比较。  相似文献   

10.
2010年9月中下旬在四川省峨眉县峨眉山(29.5°N,103.3°E)西南麓进行了挥网采集,获得蠓类2亚科10属11种,其中有2个新种:峨眉裸蠓(Atrichopogon emeiensis Deng,Liao et Yu sp.nov.)和李江柱蠓(Stilobezzia lijiangi Yu,Zhang et ...  相似文献   

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Salivary proteins of hematophagous Culicoides spp. are thought to play an important role in pathogen transmission and skin hypersensitivity. Analysis of these proteins, however, has been problematic due to the difficulty in obtaining adequate amounts of secreted Culicoides saliva. In the current study, a collection method for midge saliva was developed. Over a 3-d period, 3- to 5-d-old male and female Culicoides nubeculosus Meigen (Diptera: Ceratopogonidae) were repeatedly placed onto the collection system and allowed to deposit saliva into a filter. Salivary products were eluted from the filters and evaluated by gel electrophoresis and mass spectrometry as well as by intradermal testing and determination of clotting time. Gel electrophoresis revealed approximately 55 protein spots displaying relative molecular masses from 5 to 67 kDa and isoelectric points ranging from 4.5 to 9.8. The majority of molecular species analyzed by mass spectrometry showed high convergence with salivary proteins recently obtained from a cDNA library of Culicoides sonorensis Wirth & Jones, including proteins involved in sugarmeal digestion, defense, and coagulation inhibition as well as members of the D7 family and unclassified salivary proteins. In addition, the proteome analysis revealed a number of peptides that were related to proteins from insect species other than Culicoides. Intradermal injection of the saliva in human skin produced edema, vasodilatation, and pruritus. The anticoagulant activity of the saliva was demonstrated by significantly prolonged clotting times for human platelets. The potential role of the identified salivary proteins in the transmission of pathogens and the induction of allergies is discussed.  相似文献   

14.
A major allergen has been identified in an aqueous extract of the 'green nimitti' midge, Cladotanytarsus lewisi (Diptera: Chironomidae). Following chromatography on Sephadex G-100 allergenic activity, as assessed by skin ('prick') testing, eluted as two closely related peaks (pools I and II) at about 50% bed volume. When these pools were applied separately to columns of CM-cellulose, activity in each eluted with 0 . 05 M NaCl. Isoelectric focusing of the unfractionated allergen gave a single peak of activity at pI 4 . 3. By SDS--PAGE, biological activity in the whole 'green nimitti' extract and the material eluting from both pools I and II of the Sephadex G-100 column migrated to the same positions and were associated with a molecular size of 15,000--20,000 daltons. Skin test reactivity of the unfractionated material and the Sephadex G-100 pool I and II eluates were all destroyed following incubation with trypsin, chymotrypsin, thermolysin and neuraminidase. These experiments indicate that a major allergen derived from the 'green nimitti' midge, a cause of widespread and severe immediate-type allergy in the Sudan, is an acidic glycoprotein of 15,000--20,000 molecular weight.  相似文献   

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From the above it can be seen that autopsy is not a grotesque, macabre procedure performed for peculiar and disreputable reasons in a remote corner of the hospital. On the contrary, it is a scientific study designed to forward our knowledge of health and disease by the three primary methods of service, teaching and research. The examination of a dead body is always an emotional procedure. The pathologist and those concerned with frequent performance of autopsies become accustomed to it. To witness an autopsy may cause considerable emotional reaction in inexperienced people. As part of the learning experience, it can be very useful and appropriate staff are welcome to attend by arrangement. As proper protection garments are required and the suitability of viewing certain autopsies may arise, a formal request to the responsible pathologist is necessary. Whatever one's religious beliefs, it may be helpful to think of the deceased person's body as something which he or she has used during life, but which is no longer in any real way the persons once life has departed. The decreased body must be treated with dignity and respect as representing the remains of what was a human being and because of the natural desire of the next of kin that the remains of their relative should so be treated; it is not the person who used the body during life.  相似文献   

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Mark-release-recapture experiments were conducted to determine the duration of the gonotrophic cycle of Anopheles albitarsis s.l. in Ribeira Valley, State of Sao Paulo, Brazil. Separate experiments with females collected from the field were followed under laboratory conditions. A mean of 2.4 d was characteristic for the gonotrophic cycle for wild-caught females, whereas 4.4 d was characteristic for females in the laboratory conditions.  相似文献   

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The diurnal pattern of oviposition by Toxorhynchites moctezuma (Dyar & Knab), ambient relative humidity, and ambient air temperature were monitored hourly between 0600 and 1800 hours for 46 consecutive d in a tropical rainforest in Trinidad, West Indies. The mean number of eggs per ovitrap per hour was correlated negatively with mean ambient relative humidity and positively with air temperature. Partial correlation coefficients among these variables and contingency table analysis indicated a stronger relationship between the oviposition rate and relative humidity than between oviposition rate and temperature. We suggest that this relationship is further evidence of the ability of female Tx. moctezuma to detect suitable oviposition sites using humidity gradients.  相似文献   

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