Evolution and Speciation in Protozoa

原生动物的进化与物种形成

发育生物学,古生物学

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作      者
出  版 社
出版时间
2023年02月24日
装      帧
精装
ISBN
9781032347516
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页      码
180
开      本
234 x 156 mm (6.14 x 9.21
语      种
英文
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The polyphyletic Protozoa have explored the possibility of performing almost all metazoan functions with a few subcellular organelles. Their unicellularity and structural simplicity have (i) limited diversity to 32,950 species, (ii) restricted spatial distribution to aquatic habitats (94%, against 15% in Metazoa), (iii) demonstrated the ubiquitous dominance of clonality, (iv) reduced sexualization in 50% species, (v) facilitated the use of vegetative gametes in 40% species and (vi) secondary loss of sex in 10% species. With the fastest multiplication rates, i.e. once every 6-60 hours, they occur in high densities of 105-106 cell/ml. Their diverse and complicated life cycles are described in 30 types. Being risky, the cycle involves two hosts in
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