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1.
记述了浙江省斑摇蚊属一新记录种:多齿斑摇蚊Stictochironomus multannulatus(Tokunaga,1938),并附主要特征图。多齿斑摇蚊由Tokunaga于1938年命名并描述,区别于本属已知种的主要鉴别特征如下:翅具色斑,肛尖细长,上附器钩状,基部具3-4根长刚毛,近端部1/3处具1根长刚毛,抱器端节端部内缘具4-8根短刚毛。  相似文献   

2.
对摇蚊科(Chironomidea)明摇蚊属(Phaenopsectra Kieffer,1921)黄明摇蚊P.flavipes(Meigen,1818)进行再描述,并附主要特征图。黄明摇蚊P.flavipes(Meigen)的主要鉴别特征为:翅无色斑,体深棕色;肛尖端部膨大,球状;上附器钩状,基部具4根长刚毛,近端部1/3处具1根长刚毛;下附器指状,具8根长刚毛;第IX背板中部17根长刚毛,后缘具8根刚毛。  相似文献   

3.
依据采集自台州市宁溪的摇蚊标本,记述了摇蚊属(Chironomus Meigen,1803)中的5种:尖附器摇蚊(C. cingulatus Meigen,1830)、台南摇蚊(C. circumdatus Kieffer,1916)、背摇蚊(C. dorsalis Meigen,1818)、黄色羽摇蚊(C.flaviplumus Tokunaga,1940)和花翅摇蚊(C. kiiensis Tokunaga,1936)。其中,背摇蚊依据雄成虫和幼虫标本鉴定;尖附器摇蚊、台南摇蚊和花翅摇蚊依据雄成虫标本鉴定;黄色羽摇蚊依据幼虫标本鉴定。本文对上述5种进行了详细描述,并附主要特征图。其中,黄色羽摇蚊为台州市新记录种。  相似文献   

4.
记述了浙江省间摇蚊属一新记录种:黑带间摇蚊Paratendipes nigrofasciatus Kieffer,,对其进行了详细地再描述。并附主要特征图。  相似文献   

5.
本文记述了浙江省二叉摇蚊属一新记录种:七斑二叉摇蚊Dicrotendipes septemmaculaus(Becker,1908),对其进行了详细地再描述,并附主要特征图.  相似文献   

6.
对浙江省台州地区倒毛摇蚊属(Microtendipes Kieffer,1915)已知种类进行了描述,共描述此属4种:黄绿倒毛摇蚊Microtendipes britteni(Edwards,1929)、小足倒毛摇蚊Microtendipes pedellus (De Geer,1776)、平截倒毛摇蚊Microtendipes truncatus Kawai&Sasa,1985、雅安倒毛摇蚊Microtendipes yaanensis Qi&Wang,2006.其中,平截倒毛摇蚊Microtenliipes truncatus为浙江省新记录种,对其进行了详细地再描述,并附主要特征图.编制了台州地区倒毛摇蚊属已知雄成虫的分种检索表.  相似文献   

7.
水环境中的摇蚊幼虫研究进展   总被引:4,自引:0,他引:4  
近年来,摇蚊幼虫在水生态环境中的重要作用已被许多研究所证实。重点介绍了国内摇蚊幼虫在亚科、属、种的鉴定结果;详细总结了摇蚊幼虫的指示生物及其在掌握水环境质量状况中的作用、饲养、污染防治方法:初步涉及摇蚊幼虫在水生态毒理学中的应用。认为我国今后一段时期内的研究重点应是摇蚊幼虫种类鉴定资料的完善、饮用水处理工艺中污染防治技术研究及态毒理学特性分析,并制定标准化的试验方法和监测方法。  相似文献   

8.
唾腺染色体的观察是各高等院校遗传学实验的必开内容 ,本文介绍一种好制作、易观察的唾腺染色体材料———摇蚊 ,并介绍了分析唾腺染色体斑带的简单方法  相似文献   

9.
报道了河南叉襀科一新纪录属:球尾叉襀属Sphaeronemoura,并记述了一新纪录种:Sphaeronemoura songshana.该属鉴别特征为颈侧片的内外两侧具有一不分支的腊肠状颈鳃;雄成虫腹端第8背板后缘延伸,略不对称;第10背板在肛上突基部下方形成一个纵向的膜质区,其侧缘通常有尖锐的隆突;肛侧突中叶形成钝圆的突起;肛上突不对称,端部有长的鞭状突出物.雌成虫的鉴别特征为第7腹板前生殖板后缘中部向前明显凹入,后生殖板有2个骨化的侧骨片.该属稚虫尾须念珠状,端部数节逐渐变大,每节具1圈长鬃,鬃间有1簇短的刚毛,为其与近缘属的有效鉴别特征.观察标本保存在河南科技学院昆虫标本馆.  相似文献   

10.
利用光学显微镜和扫描电子显微镜观察了福建省扁莎属四个种和湖瓜草属二个种的叶表皮,统计并测量了气孔类型、气孔大小、气孔密度及气孔指数等,描述了表皮角质膜、气孔外拱盖的有关特征,结果表明:1)扁莎属四个种和湖瓜草属两个种的气孔器类型均为平列型。2)在光镜下,扁莎属四个种在气孔大小、气孔器密度及气孔指数等方面有明显差异。这些差异在微形态特征方面为扁莎属的系统学研究提供了新的佐证;湖瓜草属在气孔器密度、气孔指数及垂周壁式样等方面存在较大差异,这为湖瓜草属提供了种间分类依据。3)在电镜下,四种扁莎属植物在气孔形状、角质膜特征等方面有一定差异,而两种湖瓜草属植物在角质膜特征方面差异明显。  相似文献   

11.
本文运用灰色理论给出了安徽省耕牛血吸虫病感染率预测的GM (1 ,1 )模型 ,并对耕牛中扩大化疗的比例、耕牛存栏数对血吸虫病感染率的影响进行了灰色关联分析 ,由此对今后的农业血防工作提出了几点建议  相似文献   

12.
采用“稻田土”、“腐殖质+稻田土”、“稻田土+细河沙”3种基质进行石松的分株繁殖试验,结果表明:分株繁殖是石松可行的繁殖方式,而“稻田土”、“腐殖质+稻田土”为石松分株繁殖的适宜基质.  相似文献   

13.
To construct a hepatic stellate cells (HSCs) subtracted cDNA library to find differentially expressed genes in normal mice and mice infected with Schistosomajaponicum (S. japonicum). Suppression subtractive hybridization (SSH) was used. The cDNA fragments of normal mouse were compared to those of schistosoma-infected mice to find differentially expressed genes. Then differentially expressed cDNA fragments were directly inserted into T/A cloning vector to set up the subtractive library. Amplification of the library was carried out with transformation of DH5α. The amplified library contained more than 400 positive bacterial clones, which were then hybridized with forward and backward subtracted probes for differential screening, One hundred positive bacterial clones were randomly selected for sequencing and BLAST analysis, Finally, virtual Northern Blot confirmed such differential expression. The subtracted cDNA library of differentially expressed genes of HSCs was constructed successfully, the library is efficient and lays foundation for screening and cloning new and specific genes of schistosomiasis.  相似文献   

14.
采用水蒸气蒸馏法提取野生天竺桂叶挥发油,利用气相色谱-质谱联用技术分析挥发油化学成分,并以面积归一法测定各成分的相对含量从野生天竺桂叶挥发油中共鉴定了88个化合物,占挥发油总量的83.77%,含量较高的化学成分有β-侧柏烯(12.54%)、1-石竹烯(5.96%)、β-桉叶醇(5.85%)、α-按叶烯(4.53%)等.野生天竺桂叶挥发油成分复杂,以萜类及其衍生物为主,含有多种生物活性成分.  相似文献   

15.
目的:研究人群特异性免疫力对日本血吸虫感染率的影响。方法:选择粪检血吸虫阳性91人(A组)和粪检血吸虫阴性223人(B组)作为研究对象。两组人群经吡喹酮治疗后10d,将观察对象同时暴露在水稻栽插期,栽插期结束后30d用粪检查病,观察两组感染率是否有差异,以此推断特异性免疫力对人群血吸虫感染率的影响。结果:A组感染率(再感染率)为38.46%(35/91),其中6—14岁儿童感染率(再感染率)为10.53%(2/19),15~60岁人群感染率(再感染率)为45.83%(33/72)。B组的感染率为29.60%(66/223),其中6~14岁儿童感染率为20.27%(15/74),15~60岁人群感染率为34.23%(51/149)。结论:人体感染日本血吸虫后产生的特异性免疫力较弱,对降低人群再感染无明显作用。  相似文献   

16.
The purpose of this research was to analyze faculty collective bargaining contracts at 124 institutions of higher education that had a 10-year history of collective bargaining from 1975 to 1985 to determine if contracts negotiated in 1975 significantly differed from those negotiated in 1985 with regard to 18 selected academic items. Each academic item in both the 1975 and 1985 contracts was coded according to a scaling code with rankings showing the direction of faculty control. The findings revealed that the 1985 contracts contained both an increased number of academic items and an increased level of faculty control over most of those academic items compared with the 1975 contracts.  相似文献   

17.
利用非离子去污剂TritonX-100抽提日本血吸虫成虫表膜蛋白,反相高效液相色谱(HPLC)分离纯化后,收集各主要蛋白峰,以125I标记的人血浆低密度脂蛋白(LDL)作为放射性配基,通过放射性自显影初步鉴定表明日本血吸虫成虫表膜具有可与人血浆LDL结合的受体蛋白。结果显示,低密度脂蛋白受体保留时间约为11min时,经SDS-PAGE电泳鉴定其分子量约60000,此蛋白能特异结合碘标记人血浆LDL。本实验为了解血吸虫在宿主体内获得脂质的途径及进一步研制新的抗血吸虫药物打下基础。  相似文献   

18.
The generalization of specific social skills to new environments/situations by elementary-aged students with learning disabilities was the primary focus of this study. During the spring semester of 1985, training in the learning disabilities resource room, including a discussion and verbal rehearsal of appropriate skill use and positive consequences of using the specific social skill appropriately, was initiated. Once the subject became proficient in the skill of interest, attempts to establish the skill outside the resource room were initiated (training sufficient exemplars). Reinforcement in the form of systematic attention was delivered in the new environments by teachers and parents. During the fall semester of 1985 each of the subjects was again observed with respect to the behaviors of interest. All subjects manifested generalization of the social skills to the new environments.  相似文献   

19.
中国农村家庭教育支出的实证研究:1985-1999   总被引:13,自引:0,他引:13  
实证研究表明,在我国,1985年后的农村家庭教育支出是不断增加的;1985-1999年期间,家庭教育支出增长率遵循高———低———高的变化趋势;不同年度家庭教育支出与家庭收入呈正向变动关系,二者的弹性系数大于1。与家庭人口规模变化、家庭消费结构等因素比较,教育财政改革推动的教育价格上涨对上述现象的解说更具说服力。  相似文献   

20.

Does Education Matter? By Brian Simon. 240 pp. London: Lawrence and Wishart Ltd. 1985. £5.95.

The Politics of Education: Culture, Power and Liberation. Paulo Freire (with an Introduction by Henry A. Giroux). Macmillan, 1985. xxv + 199 pp. Price £20 HC, £7.95 PR.

Education, Persons and Society: A Philosophical Enquiry. By Glenn Langoford. Pp. x, 205. Houndmills, Basingstoke: Macmillan, 1985. £25.00 and £7.95.

Freedom and Discipline. Richard Smith. 129 pp. Allen &; Unwin 1985. Hardback £12.50. Paperback £4.95.

Beyond IQ: a Triarchic Theory of Human Intelligence. By Robert J. Sternberg. Pp. xvi, 411. Cambridge: Cambridge University Press, 1985. £8.95.

Literacy, Language and Learning. Edited by David R. Olson, Nancy Torrance, and Angela Hildyard. Pp. x, 438. Cambridge: Cambridge University Press, 1985. HB £27.50, PB £9.95.

Moray House and Professional Education, 1835–1985; Papers to mark the College's 150's Anniversary. Edited by Gordon Kirk. Pp. x, 195. Edinburgh: Scottish Academic Press, 1985. £10.50.

Re‐thinking Teacher Education. Edited by David Hopkins and Ken Reid. Pp. v + 262. Beckenham, Croom Helm, 1985, ISBN 0–7099–3705–9, £17.95.

(1) Structure and Process of Initial Teacher Education within Universities in England and Wales. (The acronym does not stretch all the way).

(2) Holt, Rinehart and Winston, 1984.

Key Issues in Education: Comparative Perspectives. Edited by Keith Watson. Pp. vi, 127. London: Croom Helm, 1985. £15.95.

A Teacher's Guide to Multicultural Education. By Jon Nixon. Pp. viii, 183. Oxford and New York; Basil Blackwell, 1985. £?

Keith Watson and Raymond Wilson (editors) Contemporary Issues in Comparative Education: a Festschrift in Honour of Professor Emeritus Vernon Mallinson. Croom Helm, London 1985. Pp. 227. £15.95.

Children's Rights. By C. A. Wringe. Pp. xi, 180. London: Routledge &; Kegan Paul, 1985. £4.95.  相似文献   

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