大學(xué)動(dòng)物學(xué)--原生動(dòng)物-文庫(kù)吧資料
2024-08-29 01:43本頁(yè)面
【正文】 ● 傳播媒介： 雌按蚊 間日瘧的生活史 ● 紅細(xì)胞前期 ：在人的肝臟中進(jìn)行。 mouth 昏睡病 African Sleeping Sickness ? Parasite Trypanosoma ? Chronic disease lasting years. ? Affecting countries of western amp。 anemia. ? Fatality can be 90% if untreated. ? 白蛉子傳播 寄生于皮膚的利什曼原蟲(chóng) Cutaneous Leishmaniasis ? Parasites form skin ulcers. As many as 200 lesions may form causing disability and social stigma 寄生于皮膚粘膜的利什曼原蟲(chóng) Mucocutaneous Leishmaniasis ? Central amp。 盤(pán)藻 空球藻 實(shí)球藻 Sexual Asexual 孢子生殖 配子生殖 接合生殖 Mitosis – Division of nucleus Cytokinesis – Division of cytoplasm Binary Fission 縱二分裂 橫二分裂 Sporogongy ? Like multiple fission (schizogony) except occurs after union of gametes v 包囊形成 Encystment and Excystment ? Cyst forms to survive harsh environment – Dormant stage – Resistant covering – Shuts down metablolism ? Up to 49 years! – Parasite leaves host
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