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实验五 牛羊常见寄生虫的形态特征


16. Mites (螨)
←sarcoptes scabiei (疥螨)
Psoroptes communis → (痒螨)
17. Lice (虱)
血虱
毛虱
作业
请按寄生虫分类体系列出牛、羊
常见寄生虫的中外文名称,并说 明其寄生部位和中间宿主情况。
10. Coenurus cerebralis (脑多头蚴)
Site: brain
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
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。
4. Bunostomum spp. (仰口线虫)
Hale Waihona Puke 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。
Each segment contain two sets of genital organs . In M. expansa interproglottidal glands forming row of rosettes, whereas in M.
benedeni they are confined to short row close to the middle of proglottis margin. 每个成熟节片有两套生殖器官;贝氏莫尼茨绦虫节间腺呈横带状,而扩张莫尼茨绦 虫的节间腺分散排成一行。
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 undulating membrane.
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
Oral Sucker (口吸盘) Ventral Sucker (腹吸盘)
Ovary(卵巢)
Testis(睾丸) intestine(肠管)
肝片吸虫
The ovary, testes and caeca much-branched. 肝片吸虫的卵巢、睾丸和肠管都高度分枝。
姜片吸虫
6. Paramphistomum (前后盘吸虫)

T. vitulorum is the largest intestinal parasite of cattle . The egg is subglobular, with a thick pitted shell. 犊弓首蛔虫为牛体内最大型线虫; 虫卵近圆形,具凹凸不平的厚卵壳。
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。
3. Toxocara (syn. Neoascaris) vitulorum (犊弓首蛔虫)
Experiment Ⅴ
The Morphological Features of the Parasites in Cattle and Goats 牛羊常见寄生虫的形态特征
华南农业大学兽医学院
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。
and
an
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)
15. Cryptosporidium spp. (隐孢子虫)


卵囊呈椭圆形,囊壁 光滑,一端有裂缝。 成熟卵囊含有4个裸 露的香蕉形子孢子和 1个残体。
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。
前后盘吸虫卵
椭圆形; 无色或灰褐色;
肝片吸虫卵
一端有盖;
卵内结构较疏松。
注意与肝片 吸虫卵比较
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。
8. Moniezia (莫尼茨绦虫)
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