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出芽生殖

水螅的出芽生殖

出芽生殖 (英语:budding)又称芽殖芽生[1](blastogenesis),是一种无性繁殖方式,亲代借由“出芽”形成子代而进行增殖,但是子代并不立即脱离母体,仍与母体相连,继续接受母体提供养分,直到个体可独立生活才脱离母体。出芽是亲代以细胞分裂方式由其局部向外突出形状像芽的雏体的过程。

芽殖是一种特殊的无性生殖方式,可产生单细胞子代亦可为多细胞子代,由单细胞亲代的细胞膜或细胞壁或由多细胞亲代个体体壁,局部向外突出成芽胞或芽体,成熟后脱离长成与原细胞或个体同样形态的新细胞或个体,或不脱离母体而形成群体。不同类群的出芽虽外观相似,但又分为外出芽、内出芽[2]等生殖类型。行芽殖的微生物或生物有酵母菌白色念珠菌水螅海绵苔藓虫丝盘虫等等。

参考

  1. ^ 存档副本. [2024-04-19]. (原始内容存档于2024-04-19). 
  2. ^ James Desmond Smyth, Derek Wakelin. Introduction to animal parasitology 3. Cambridge University Press. 1994: 101–102. ISBN 0-521-42811-4. 
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出芽生殖
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