小足倒毛摇蚊的再描述(双翅目:摇蚊科)

对摇蚊科（Chironomidea）倒毛摇蚊属（Microtendipes Kieffer）,1915小足倒毛摇蚊[M.pedellus（De Geer,1776）]进行再描述,并附主要特征图。     

武汉南湖摇蚊幼虫中国新记录

本文记述了武汉南湖摇蚊幼虫中国新记录属、种。６个新记录种为美丽前突摇蚊Ｐｒｏｃｌａｄｉｕｓ （Ｐｓｉｌｏｔａｎｙｐｕｓ）ｂｅｌｌ－ｕｓ（Ｌｏｅｗ），毛突摇蚊Ｃｈａｅｔｏｃｌａｄｉｕｓ ｓｐ．，普隆蒂内曼摇蚊Ｔｈｉｅｎｅｍａｎｉｏｌａ ｐｌｏｅｎｅｎｓｉｓ Ｋｉｅｆｆｅｒ，伸足凯氏摇蚊Ｋｉｅｆｆｅｒｕｌｕｓ ｔｅｎｄｉｐｅｄｉｆｏｒｍｉｓ Ｇｏｅｔｇｈｅｂｕｅｒ，微小摇蚊Ｍｉｃｒｏｃｈｉｒｏｎｏｍｕ     

广西多足摇蚊属一新记录种记述

记述了广西多足摇蚊属一新记录种:十斑三突多足摇蚊[Polypedilum(Tripodura)decematoguttatum],并附主要特征图。十斑三突多足摇蚊隶属于多足摇蚊属(Polypedilum)三突摇蚊亚属(Tripodura),由Tokunaga于1938年命名并描述。十斑三突多足摇蚊区别于本亚属其他种的主要特征是翅具10块色斑、足具色环、肛尖每侧各具2个背突。     

武汉南湖摇蚊幼虫群落的研究

１９８７－１９８８年及１９９１年对武汉南源摇蚊幼虫分别进行了定量的水平和垂直采样，获得幼虫１５种，隶属３个亚科，１０个属。中国长足摇蚊、Ｐｒｏｐｓｉｌｏｃｅｒｕｓ ａｋａｍｕｓｉ（Ｔｏｋｕｎａｇａ）和半褶皱摇蚊（Ｃｈｉｎｏｍｕｓ ｐｌｕｍｏｓｕｓ ｆ．ｓｅｍｉｒｅｄｕｃｔｕｓ ｌｅｎｚ）是３个优势种。幼虫群落的平均密度为１３９２个／ｍ＾２，其中５月密度最低，９月最大；平均生物量为１０．４ｇ／ｍ＾２     

稻田摇蚊的研究进展

摇蚊是一类重要的水生昆虫,其种类和数量都非常丰富.该类昆虫在各大陆均有发生,是水体环境中的优势种.简要介绍了摇蚊的生活史及发生情况,并对稻田摇蚊的研究进行了较为详细的综述,以期为今后稻田摇蚊的深入研究与防治提供帮助.     

浙江省间摇蚊属种类记述

对浙江省间摇蚊属(Paratendipes Kieffer,1911)已知种类进行了描述,共描述此属5种:白间摇蚊[Paratendipes albimanus(Meigen,1818)]、尖窄间摇蚊[Paratendipes angustus(Lin,QiWang,2011)]、黑带间摇蚊[Paratendipes nigrofasciatus(Kieffer,1916)]、裸瓣间摇蚊[Paratendipes nudisquama(Edwards,1929)]、苏步间摇蚊[Paratendipes subaequalis(Malloch,1915)]。其中,裸瓣间摇蚊为浙江省新记录种,对其进行了详细的再描述,并附主要特征图。编制了浙江省间摇蚊属已知雄成虫的分种检索表。     

大连市的摇蚊科幼虫及新记录

根据1985—1987年4至7月,在大连市5个区。16个地点调查、采集摇蚊科幼虫,经鉴定分类于4亚科16属。共28种,其中有10种为国内新记录。即:喀氏粗腹摇蚊Peloia Kratzia Kieff。伤残长跗摇蚊Tanytarsusmancua Wulp、劳氏长跗摇蚊Tanytarsus Lauterborni Kieff、簇状长咐摇蚊Tanytarsus gregarius kieff、云斑乡足摇蚊Polypedilum nubeclutsum Meigen、多足摇蚊Polypedilum sp Lipina、三齿沼摇蚊LimnoChironomus .friromus Kieff.神经沼摇蚊LimnoChironomus (?) staeg.污秽刀突摇蚊Psectrocladius Sordiellus(Zettertedt)棒脉摇蚊Corynoneura sP.文中对大连市摇蚊科幼虫作了检索外,对国内首次记录种类进行了简要形态描述,同时也对大连市摇蚊的分布作了简介。     

浙江省哈摇蚊属种类记述

依据浙江省已有标本,详细描述了浙江省短叶哈摇蚊[Harnischia curtilamellata(Malloch,1915)]、截铗哈摇蚊[Harnischia japonica(Hashimoto,1984)]、叶突哈摇蚊[Harnischia tenuitubercula(ChaudhuriChattopadhyay,1990)]和膨铗哈摇蚊[Harnischia turgidula(WangZheng,1993)]等4种哈摇蚊属,并附主要特征图和分种检索表。以上4种均为浙江省新记录种,其中叶突哈摇蚊为中国新记录种。     

浙江省小摇蚊属种类记述

对浙江省小摇蚊属(Microchironomus Kieffer, 1918)已知种类进行了描述,共描述此属2种,包括软铗小摇蚊[Microchironomus tener (Kieffer, 1918)]、塔氏小摇蚊[Microchironomus tabarui (Sasa, 1987)]。其中,塔氏小摇蚊为浙江省新记录种,对其进行了详细地再描述,并附主要特征图。     

3种农药对花翅摇蚊毒力和AChE活性影响

[目的]研究3种农药对花翅摇蚊毒力和AChE活性影响.[方法]以花翅摇蚊为对象,测定氧化乐果、甲萘威和辛硫磷对花翅摇蚊4龄幼虫毒力和体内AChE活性的影响.[结果]氧化乐果、甲萘威和辛硫磷24h致死中浓度LC50分别为193.45、73.53和100.30mg/L.亚致死浓度（LC5、LC10和LC20）胁迫下,氧化乐果和甲萘威对摇蚊幼虫AChE活性抑制率分别为-9.03％ ～53.89％和5.14％ ～38.14％,主要表现为抑制作用.辛硫磷对AChE活性抑制率为-27.27％～33.13％.[结论]摇蚊幼虫AChE对3种农药有高敏感性,可作为监测水体农药污染的生化标志物.     

田间斜纹夜蛾成虫饲毒后垂直传毒对其后代的影响

[目的]通过TDM模型研究田间斜纹夜蛾成虫当代饲毒后,对子代种群的毒力。[方法]在田间以3种浓度斜纹夜蛾核型多角体病毒感染斜纹夜蛾成虫,分析病毒对斜纹夜蛾幼虫致死的浓度效应和时间效应。[结果]结果表明,子1代斜纹夜蛾从孵化开始,第5天日死亡率最高,且随着病毒浓度的升高,LT50值减小,在稀释浓度为200倍时,LT50值为8．9928,在稀释浓度为50倍时,LT50值为6．4256。[结论]病毒虫瘟1号对斜纹夜蛾成虫当代饲毒后,对子代也有明显的控制效果。     

Effect of Copper Toxicity on Lymphoid Organs in Ducklings

210 one-day-old Tianfu meat ducklings ware divided into three groups,and fed on diets as follows: (1) control (Cu 12.16 mg kg-1),(2) copper toxic Ⅰ (Cu 850 mg kg-1) and (3)copper toxic Ⅱ( Cu 1 050 mg kg-1) for studies on effects of copper toxicity on lymphoid organs in duckling with the methods of experimental pathology and flow cytometry (FCM).The weight and growth index of the thymus,spleen and bursa of Fabricius were markedly reduced (P＜ 0.05 or P＜ 0.01) in both copper toxic group Ⅰ and Cu toxic group Ⅱ when compared with control group.The G0/G1 phase of the cell cycle of the thymus,spleen and bursa of Fabricius was much higher,and S,G2+M phases lower in Cu toxic groups Ⅰ and Ⅱ than in the control group.There were lymphocyte degeneration and depletion of lymphoid organs,and the reticular cells of spleen and bursa of Fabricius proliferated and the reticular cells of thymus were also degenerate and necrotic in Cu toxic groups.The results demonstrated that Cu toxicity seriously impaired the progression of lymphocytes from the G0/G1 phase to S phase,inhibited the development of lymphoid organs and caused marked pathological injury in lymphoid organs.The results also showed that the effect of Cu toxicity on the primary lymphoid organs occurred stronger than on the secondary lymphoid organs.The effect of Cu toxicity was the greatest on the bursa of Fabricius,followed hy the thymus,and then the spleen.Potential mechanisms underlying aforementioned observation were also discussed.key words: Copper toxicity,Lesion,Cell cycle,Lymphoid organ,Duckling     

Effect of Copper Toxicity on Lymphoid Organs in Broilers

The experiment was conducted to examine the effect of copper toxicity on lymphoid organs by experimental pathology and flow cytometry (FCM). 180 one-day-old Avian broilers were divided into three groups, and fed diets as follows: 1) Control(Cu 11.97 mg kg-1 diet), 2) Cu- toxic group Ⅰ (Cu 650 mg kg-1) and 3) Cu- toxic group Ⅱ (Cu 850 mg kg-1) for six weeks.Compared with the control, the growth index of the thymus, spleen and bursa of Fabricius were markedly reduced (P＜0.05or P＜0.01), the G0/G1 phase of cell cycles of the thymus, spleen and bursa of Fabricius was higher (P＜0.05 or P＜0.01), while the S phase and proliferating index were lower (P＜0.05 or P＜0.01)in both Cu-toxic group Ⅰ and Cu-toxic group Ⅱ. The results demonstrated that Cu toxicity seriously impaired the progression of lymphocytes from the G0/G1 phase to the S phase, inhibited the growth and development of lymphoid organs.     

苹果小绿叶蝉种群空间分布型研究

 小绿叶蝉在苹果园的种群空间分布型用Taylor幂法则,Iwao的m-m回归分析法进行分析,得出的结果均一致,即在小绿叶蝉发生活动期均为聚集分布,且随种群密度的变化,聚集和扩散趋势呈现出一定的规律性。     

6种瓢虫对胡萝卜微管蚜捕食功能反应的测试

[目的]测试6种瓢虫对胡萝卜微管蚜的捕食功能反应。[方法]在室内分别测试了八斑和瓢虫[Harmonia octomaculata（Fabricius）]、粗网巧瓢虫[Denopie chinensis（Weise）]、六斑月瓢虫[Menochilus sexmaculata（Fabriciys）]、红星盘瓢虫[Phrynocaria congener（Billberg）]、龟纹瓢虫[Propylea japonica（Thunberg）]、狭臀瓢虫[Coccinella transversalis（Fabricius）]6种瓢虫成虫对胡萝卜微管蚜（Semiaphisheraclei Takahashi）的捕食功能反应。[结果]胡萝卜微管蚜的密度与6种瓢虫各1头成虫对相应密度蚜虫的捕食率呈极显著负相关,6种瓢虫成虫对胡萝卜微管蚜的捕食功能反应符合Holling-Ⅱ型反应。八斑和瓢虫、粗网巧瓢虫、六斑月瓢虫、红星盘瓢虫、龟纹瓢虫、狭臀瓢虫各1头成虫对胡萝卜微管蚜的日最大潜在捕食量分别为159.52、193.53、129.57、140.76、120.20、147.34头,其中以粗网巧瓢虫成虫控制蚜虫的潜力最大。[结论]粗网巧瓢虫成虫可作为捕食蚜虫的瓢虫优势种加以保护利用。     

转Bt基因抗虫棉田斜纹夜蛾的发生特点

20 0 3年斜纹夜蛾对转Bt基因抗虫棉叶片和生殖器官的危害已经超过常规棉 ,百株虫量是常规棉的近 4倍。原因主要有 3个方面 :一是转Bt基因抗虫棉对斜纹夜蛾幼虫的发育历期、蛹历期、成虫寿命及蛹重没有显著影响 ;二是斜纹夜蛾取食转Bt基因抗虫棉叶后雌性比例、产卵率和产卵量较高 ;三是斜纹夜蛾的发生与棉株营养有密切的关系 ,表现为随着施氮量和磷钾肥配比的提高 ,百株虫量增加。表明在施氮量和磷钾肥配比较高的田块 ,要更加重视斜纹夜蛾的防治。     

几种草坪蝗虫若虫的识别

在2007和2008每年7—8月对天津草坪蝗虫种类进行调查,并经若虫饲养与种类鉴定、特征比较得知:花胫绿纹蝗若虫头顶前端锐角形,有梯形的头侧窝、无前胸腹板突等构造可以区别于头顶前端平截,无头侧窝、有前胸腹板突的长翅素木蝗及头顶前端园钝,无头侧窝、有前胸腹板突、后足腿节内、外下膝侧片有锐刺状突起的中华稻蝗若虫。东亚飞蝗若虫无前胸腹板突、头顶前端园钝,复眼下方有一深色斑可区别其它几种若虫。     

江淮地区斜纹夜蛾对杀虫剂的抗药性测定

采用点滴法测定了江淮地区斜纹夜蛾对杀虫剂的抗性。结果表明,斜纹夜蛾对高效氯氰菊酯杀虫剂的抗性倍数最高,为42倍,达到高抗水平;对三唑磷和硫丹杀虫剂的抗性水平处于低水平抗性阶段,抗性倍数最高仅为7.5和8.8倍。     

Effect of Zinc Toxicity on Lymphoid Organs in Chickens

The experiment was conducted with the objective of studies on effects of zinc toxicity on lymphoid organs by the methods of experimental pathology and flow cytometry (FCM). 200one-day-old Avian broilers were divided into four groups randomly, and fed on diets as follows: controls (Zn 100mg kg-1)and zinc toxic (Zn 1 500mg kg-1, zinc toxic group Ⅰ; Zn 2 000 mg kg-1, zinc toxic group Ⅱ; Zn 2 500 mg kg-1, zinc toxic group Ⅲ) for seven weeks. The weight and growth index of the thymus, spleen and bursa of Fabricius were reduced in both zinc toxic group Ⅱ and zinc toxic group Ⅲ when compared with those of control group. The G0/G1 phase of the cell cycles of the lymphoid organs was higher, and S, G2+M phases lower in zinc toxic groups Ⅱ and Ⅲ than in control group. Lymphocytes were depleted and degenerate in the lymphoid organs. The reticular cells of the bursa of Fabricius proliferated and the reticular cells of the thymus were also degenerate and necrotic,particularly in zinc toxic groups Ⅱ and Ⅲ. The results demonstrated that more than 1 500 mg kg-1 impaired the progression of lymphocytes from the G0/G1 phase to S phase obviously, inhibited the development of lymphoid organs and caused marked pathological changes in the lymphoid organs. Potential mechanisms underlying these observations are also discussed.     

入侵有害生物芒果果核象甲在我国的风险分析

根据FAO的有害生物风险分析的程序,参照蒋青等建立的有害生物危险性评价的定量分析方法,从国内分布、潜在的危险性、寄主植物的经济重要性、移殖的可能性、危险性管理难度等5个方面,对芒果果核象甲的风险进行了定性和定量分析,结果表明芒果果核象甲综合风险值为2.3,具有高度的危险性.并提出了相应的风险管理的对策.