Do Species Exist in Asexuals? Theory and Evidence from Bdelloid Rotifers.
Do Species Exist in Asexuals? Theory and Evidence from Bdelloid Rotifers.
复制标题
无性动物中是否存在物种?
DOI:
10.1093/icb/icv024
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发表时间:
2015
影响因子:
2.6
通讯作者:
Fontaneto D
中科院分区:
文献类型:
--
作者:
Fontaneto D
The possibility for independently evolving entities to form and persist in the absence of sexual recombination in eukaryotes has been questioned; nevertheless, there are organisms that are known to be asexual and that have apparently diversified into multiple species as recognized by taxonomists. These organisms have therefore been identified as an evolutionary paradox. We explore three alternative hypotheses attempting to solve the apparent paradox, focusing on bdelloid rotifers, the most studied group of organisms in which all species are considered asexual: (1) they may have some hidden form of sex; (2) species do not represent biological entities but simply convenient names; and (3) sex may not be a necessary requirement for speciation. We provide ample evidence against the first two hypotheses, reporting several studies supporting (1) bdelloids asexuality from different approaches, and (2) the existence of species from genetics, jaw morphology, ecology, and physiology. Thus, we (3) explore the role of sex in speciation comparing bdelloid and monogonont rotifers, and conclude with some caveats that could still change our understanding of bdelloid species.
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DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
C. Ricci;R. Shiel;D. Fontaneto;G. Melone
通讯作者:
G. Melone
影响因子:
2.6
作者:
C. Ricci
通讯作者:
C. Ricci
影响因子:
2.6
作者:
Fontaneto, Diego;Iakovenko, Nataliia;Barraclough, Timothy G.
通讯作者:
Barraclough, Timothy G.
影响因子:
64.8
作者:
John Maynard Smith
通讯作者:
John Maynard Smith
影响因子:
2.6
作者:
C. Ricci;U. Fascio
通讯作者:
U. Fascio