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皮盲蝽属CoridromiusSignoret世界已有记载共6种。本文为该属在我国和亚洲的首次分布记录。本文记述该属两新种:中国皮盲蝽Coridromiuschinensissp.nov.;正模♂,广西阳朔,1964-09-11,王良臣采。副模:15♂♂,17♀♀,广西阳朔;1♂,台湾台北;24♂♂,28♀♀,福建龙岩;4♀♀,福建南靖;1♂,福建福州。赭皮盲蝽Coridromiustestaceoussp.nov.,正模♀,海南尖峰岭,1985-04-01,郑乐怡采,灯诱。模式标本保存在南开大学生物系。  相似文献   

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记述采自安徽黄山的泡粉蚧属一新种,即黄山泡粉蚧Puto huangshanensis sp.nov.,模式标本保存在北京林业大学昆虫标本室。  相似文献   

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本文报道贵州省新记录的鞭蝽科(Dipsocoridae)栉鞭蝽属(Ceratocombus Signoret)1新种。模式标本存放于南开大学生物系。贵州栉鞭蝽Ceratocombus guizhouensis Ren et Yang,新种(图1-7) 雄虫及雌虫均为大翅型个体,体淡棕黄色,触角、喙、各足及腹部(除尾节外)为淡黄色。  相似文献   

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寄生于壳斗科(Fagaceae)植物的蚧虫种类繁多,经初步整理,已达10科64属152种之多,几乎是我国已知蚧虫种类的1/5~1/4,其中栎链蚧属(AsterodiaspisSignoret,1876)是专性寄生类群之一。本属主要分布于东洋区,部分种类零星分布于全北区。本属迄今已知24种,其中我国已记载11种。我们在进行栎类蚧虫区系研究中,又发现该属1新种,现记述于下。异形栎链蚧Asterodiaspis deformis,新种(图Ⅰ,Ⅱ)  相似文献   

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脉红螺Rapana venosa(Valenciennes)生殖系统的组织解剖学研究   总被引:6,自引:2,他引:6  
脉红螺为雌雄异体。雄性生殖系统包括8部分:精巢、输精小管、贮精囊、输精管、前列腺、输精管外套段Ⅰ、输精管外套段Ⅱ和阴茎。雌性生殖系统包括7部分:卵巢、输卵小管、输卵管Ⅰ段、纳精囊、输卵管Ⅱ段、蛋白腺和产卵器。 脉红螺精子形成过程中有精子细胞团形成。精子线形,由头段、中段和尾段构成。头段核基部内凹形成倒“U”形管;中段有丝状线粒体鞘,螺旋缠绕轴丝;尾段由9条粗纤维包围‘9+2’型轴丝构成。 本文亦对前列腺、蛋白腺及蛋白质卵黄粒等的超微结构作了观察。  相似文献   

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Autotrophic nutrition plays an important role in adult Tridachiacrispata in the western Atlantic Ocean and results from an endosymbioticassociation between the sacoglossan and the kleptoplastids ofChlorophyta. A series of living specimens 7-80 mm in length was studied inthe laboratory. After a body length of 10 mm has been attained,the parapodial lobes of the two sides meet and fuse. Microscopicexamination of faecal strings of specimens undergoing this transitionrevealed that algal remains were produced only by juvenilesless than 13 mm long. Larger specimens defaecated only rarelyand the diminutive faecal strings contained no recognizablealgal debris. This transition probably parallels the physiologicaltransition between juvenile heterotrophic nutrition and adultautotrophic nutrition. Microscopic examination of the radulae of transitional specimensshowed no diminution of the size, number or morphology of theteeth. This indicates that in an emergency heterotrophic nutritionmay be resumed. Growth rates of Tridachia were measured in the laboratory, withand without light and the provision of algal foods. Unfed animalslost weight rather rapidly in captivity, whereas those fed uponsuitable algae (Halimeda discoidea, Caulerpa verticillata, C.racemosa and Chaetomorpha sp) did not.Caulerpa sertularioideswas suitable for food for a limited time, but proved toxic afterabout a week. Of the other species tested, Caulerpa verticillatawas the least suitable, while Halimeda, Chaetomorpha and Caulerparacemosa were the best. Ironically, C. verticillata was theonly one of the algal species tested which is known to be takenin the natural diet in Floridean waters. These experiments confirmedthat heterotrophic feeding will be resumed in Tridachia if theculture-conditions do not favour autotrophic nutrition.  相似文献   

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LACK OF SPREAD OF ENDOMYCORRHIZAS OF CENTAURIUM (GENTIANACEAE)   总被引:4,自引:4,他引:0  
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王慧芙  文在根  陈军 《蛛形学报》2002,11(2):107-127
Preface The research on Chinese oribatid mites was started in the 1920's, when A. Jacot recorded 10 oribatid species from Beijing (Peking) and Shandong (Shantung). In the 1980s', Chinese acarologists noticed the necessity of studying soil mites, which were poorly investigated and reported during the past 60 years. Along with the adoption of more open policy in China, the academic exchange and coopera  相似文献   

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在标本(包括许多模式标本)查考和居群调研的基础上,对刚竹属Phyllostachys Sieb.et Zucc.一些类群的分类问题进行了评注,其中将遂昌雷竹Ph.primotina Wen作为不同于红壳雷竹Ph.incarnata Wen的1个独立的竹种看待;8个拉丁学名被减为异名;Ph.heteroclada Oliv.f.solida(S.L.Chen)C.P.Wang et Z.H.Yu因其  相似文献   

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长须杵蚊Tripteroides(Rachionotomyia)longiplpisDong,ZhouetDong,1997系董学书等采自云南省西双版纳的雄蚊、蛹及幼虫描述,最近又采获一批幼虫,经饲养获雌、雄各3只,雌蚊描述如下。长须杵蚊Tripteroides...  相似文献   

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Abstract
External features of the puparium, larvae and egg of the Queensland fruit fly, Dacus (Bactrocera) tryoni (Froggatt) were studied by scanning electron microscopy and significant morphological characters are described and illustrated. Cephalopharyngeal skeletons are described from examination by light microscopy.  相似文献   

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黑色拱背果蝇种组三新种记述:(双翅目:果蝇科)   总被引:2,自引:0,他引:2  
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Shell variation within a single population of Litlorina rudis(Maton), collected near the Biological Station at Trondheim,Norway, was studied. The variation of the shell features studied, which includedthe shape of the basal part of the outer lip, and the relativeheight of the spire, width of the shell and of the aperture,were found to be at least partially related to shell height.Furthermore, the shell shape in the population investigated,besides varying with age, also varies due to shell damage. Nosignificant differences were found between the shapes of theshells of males and females. The shell characteristics of different populations of L. rudisalso vary greatly, one of the causes being differences in theenvironmental conditions. When studying this variation betweendifferent populations, however, it must be emphasized that onlyundamaged shells of individuals of about the same age shouldbe compared, in order to obviate the effects of the variabilitydue to age differences and shell damage within each individualpopulation. *Contribution from Trondhjem Biological Station no. 199 (Received 18 February 1980;  相似文献   

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C_(60)对小鼠S_(180)肉瘤光动力学作用模型的建立   总被引:3,自引:0,他引:3  
为验证C60对活体肿瘤的光动力学损伤作用,我们从两方面进行实验:C60对荷瘤小鼠的S180实体瘤的光动力学杀伤作用和C80对离体S180肿瘤细胞的光动力学杀伤作用,在小鼠的瘤体上注射C80光敏剂,在511nm、578nm混合黄录色激光照射正派主发C60,产生大量的单线态氧,杀伤活性肿瘤。激光光强为500mW,C60浓度为30μg/ml时,荷瘤小鼠寿命平均延长5天,瘤径减小1cm,瘤重减轻0.8克,  相似文献   

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