@ARTICLE{TreeBASE2Ref22323,
author = {Cuong Quoc Tang and Ulrike Obertegger and Diego Fontaneto and Timothy G. Barraclough},
title = {Sexual species are separated by larger genetic gaps than asexual species in rotifers},
year = {2014},
keywords = {ecological speciation, species delimitation, GMYC, biodiversity, speciation rate},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionary significant units of diversity in 6 bdelloid clades and 7 monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation.}
}
Citation for Study 14643
Citation title:
"Sexual species are separated by larger genetic gaps than asexual species in rotifers".
Study name:
"Sexual species are separated by larger genetic gaps than asexual species in rotifers".
This study is part of submission 14643
(Status: Published).
Citation
Tang C.Q., Obertegger U., Fontaneto D., & Barraclough T. 2014. Sexual species are separated by larger genetic gaps than asexual species in rotifers. Evolution, .
Authors
-
Tang C.Q.
(submitter)
+44 (0)20 7594 2255
-
Obertegger U.
-
Fontaneto D.
-
Barraclough T.
Abstract
Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionary significant units of diversity in 6 bdelloid clades and 7 monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation.
Keywords
ecological speciation, species delimitation, GMYC, biodiversity, speciation rate
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S14643
- Other versions:
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref22323,
author = {Cuong Quoc Tang and Ulrike Obertegger and Diego Fontaneto and Timothy G. Barraclough},
title = {Sexual species are separated by larger genetic gaps than asexual species in rotifers},
year = {2014},
keywords = {ecological speciation, species delimitation, GMYC, biodiversity, speciation rate},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionary significant units of diversity in 6 bdelloid clades and 7 monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation.}
}
- Show RIS reference
TY - JOUR
ID - 22323
AU - Tang,Cuong Quoc
AU - Obertegger,Ulrike
AU - Fontaneto,Diego
AU - Barraclough,Timothy G.
T1 - Sexual species are separated by larger genetic gaps than asexual species in rotifers
PY - 2014
KW - ecological speciation
KW - species delimitation
KW - GMYC
KW - biodiversity
KW - speciation rate
UR - http://dx.doi.org/
N2 - Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discreteness, in terms of intra- and interspecific variation, between facultatively sexual monogonont rotifers and obligately asexual bdelloid rotifers. We calculated the age (phylogenetic distance) and average pairwise genetic distance (raw distance) within and among evolutionary significant units of diversity in 6 bdelloid clades and 7 monogonont clades sampled for 4211 individuals in total. We find that monogonont species are more discrete than bdelloid species with respect to divergence between species but exhibit similar levels of intraspecific variation (species cohesiveness). This pattern arises because bdelloids have diversified into discrete genetic clusters at a faster net rate than monogononts. Although sampling biases or differences in ecology that are independent of sexuality might also affect these patterns, the results are consistent with the hypothesis that bdelloids diversified at a faster rate into less discrete species because their diversification does not depend on the evolution of reproductive isolation.
L3 -
JF - Evolution
VL -
IS -
ER -
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