The genetic basis and fitness consequences of sperm midpiece size in deer mice.
The genetic basis and fitness consequences of sperm midpiece size in deer mice.
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DOI:
10.1038/ncomms13652
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发表时间:
2016-12-02
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
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An extensive array of reproductive traits varies among species, yet the genetic mechanisms that enable divergence, often over short evolutionary timescales, remain elusive. Here we examine two sister-species of Peromyscus mice with divergent mating systems. We find that the promiscuous species produces sperm with longer midpiece than the monogamous species, and midpiece size correlates positively with competitive ability and swimming performance. Using forward genetics, we identify a gene associated with midpiece length: Prkar1a, which encodes the R1α regulatory subunit of PKA. R1α localizes to midpiece in Peromyscus and is differentially expressed in mature sperm of the two species yet is similarly abundant in the testis. We also show that genetic variation at this locus accurately predicts male reproductive success. Our findings suggest that rapid evolution of reproductive traits can occur through cell type-specific changes to ubiquitously expressed genes and have an important effect on fitness. Across species there are large changes in sperm morphology, yet how and why is unclear. Here, the authors show in Peromyscus mice, that the sperm midpiece length influences swimming speed and male fertility, and is regulated by cell-type specific expression of a ubiquitously expressed gene, Prkar1a.
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影响因子:
2.1
作者:
Holt, W. V.;Hernandez, M.;Satake, N.
通讯作者:
Satake, N.
DOI:
10.1098/rspb.2006.3752
发表时间:
2007-02-22
影响因子:
4.7
作者:
Immler, Simone;Birkhead, Tim R.
通讯作者:
Birkhead, Tim R.
影响因子:
--
作者:
CARDULLO, RA;BALTZ, JM
通讯作者:
BALTZ, JM
影响因子:
3.7
作者:
Calhim, Sara;Immler, Simone;Birkhead, Tim R.
通讯作者:
Birkhead, Tim R.
影响因子:
64.8
作者:
Fisher, Heidi S.;Hoekstra, Hopi E.
通讯作者:
Hoekstra, Hopi E.