实验五-牛羊常见寄生虫的形态特征.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Experiment,The Morphological Features of the Parasites in Cattle and Goats,牛羊常见寄生虫的形态特征,1.,Haemonchus contortus,（捻转血矛线虫）,The male has an asymmetrical dorsal lobe.,The female usually has a vulval flap.,雄虫交合伞有一“人”字形背肋,雌虫有一发达的椭圆形阴门盖。,2.,Oesophagostomum,（食道口线虫）,1.Oe.radiatum,has two inflated collars.辐射食道口线虫头囊分成两部。,2.Oe.columbianum,has a pair of broad cervical alae.哥伦比亚食道口线虫有发达的颈侧翼和1对颈乳突。,3.Oe.venulosum,without above features.微管食道口线虫无上述特征。,4.Oe.asperum,has an inflated cuticular cephalic vesicle.粗纹食道口线虫头囊发达。,4.,Bunostomum,spp.,（仰口线虫）,Site:small intestine,5.,Fasciola hepatica,（肝片吸虫）,The anterior end is conical and marked off by distinct shoulders from the body.,The egg is oval,operculate,yellow and large.,成虫体前端具头锥和肩部；,虫卵椭圆形，淡黄色，一端有卵盖。,The ovary,testes and caeca much-branched.,肝片吸虫的卵巢、睾丸和肠管都高度分枝。,Oral Sucker,（口吸盘）,Ventral Sucker,（腹吸盘）,Testis（睾丸）,Ovary（卵巢）,intestine（肠管）,肝片吸虫 姜片吸虫,6.,Paramphistomum,（前后盘吸虫）,The adults are small,conical,maggot-like flukes,One sucker is at the tip，and the other at the base.,虫体呈圆锥状；一吸盘在体前端，另一吸盘在体后端。,7.,Schistosoma japonicum,（,日体分体吸虫,）,The body is thread form，Unisexual,not hermaphrodite.,虫体呈圆线状；雌雄异体；雄虫具一抱雌沟,。,9.,Cysticercus bovis,（牛囊尾蚴）,The cysticercus,is greyish white,about 1.0 cm in diameter.,There is a scolex on the wall of cysticercus.,牛囊尾蚴呈灰白色，黄豆般大小，囊壁上有一反凹头节。,11.棘球蚴,棘球蚴模式图,12.,Babesia bigermina,（双芽巴贝斯虫）,Typically they are pyriform.,The body is longer than the half diameter of red cell.,They as pairs are often arranged at a characteristic angle with their narrow ends opposed.,虫体长度大于红细胞的半径，两个梨籽形虫体以其尖端成锐角相联,。,13.,Trypanosoma,（锥虫）,Elongated spindle-shaped protozoa,Possess a flagellum and an undulating membrane.,虫体呈柳叶状；具有一根鞭毛和波动膜；细胞核位于虫体中部。,14.,Theileria,spp.,（泰勒焦虫）,Theileria annulata,(,环形泰勒虫,),16.Mites(螨),sarcoptes scabiei,(,疥螨),Psoroptes communis,(痒螨),17.Lice(虱),血虱,毛虱,