Phylogeographic reconstruction of the marbled crayfish origin

被引:13
|
作者
Gutekunst, Julian [1 ]
Maiakovska, Olena [1 ]
Hanna, Katharina [1 ]
Provataris, Panagiotis [1 ]
Horn, Hannes [2 ]
Wolf, Stephan [2 ]
Skelton, Christopher E. [3 ]
Dorn, Nathan J. [4 ,5 ]
Lyko, Frank [1 ]
机构
[1] DKFZ ZMBH Alliance, German Canc Res Ctr, Div Epigenet, D-69120 Heidelberg, Germany
[2] German Canc Res Ctr, Genom & Prote Core Facil, D-69120 Heidelberg, Germany
[3] Skelton Environm Consulting LLC, Madison, GA 30650 USA
[4] Florida Atlant Univ, Dept Biol Sci, Ft Lauderdale, FL 33314 USA
[5] Florida Int Univ, Dept Biol Sci, North Miami, FL 33181 USA
关键词
PROCAMBARUS-FALLAX HAGEN; DECAPODA CAMBARIDAE; PARTHENOGENESIS; PHYLOGENIES; VIRGINALIS;
D O I
10.1038/s42003-021-02609-w
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Gutekunst et al. explore the phylogeographic origins of the marbled crayfish, Procambarus virginalis, a parthenogenetic freshwater species. Based on genomic data of the parent species, they demonstrate that both parental haplotypes of P. virginalis were inherited from the Everglades subpopulation of P. fallax. The marbled crayfish (Procambarus virginalis) is a triploid and parthenogenetic freshwater crayfish species that has colonized diverse habitats around the world. Previous studies suggested that the clonal marbled crayfish population descended as recently as 25 years ago from a single specimen of P. fallax, the sexually reproducing parent species. However, the genetic, phylogeographic, and mechanistic origins of the species have remained enigmatic. We have now constructed a new genome assembly for P. virginalis to support a detailed phylogeographic analysis of the diploid parent species, Procambarus fallax. Our results strongly suggest that both parental haplotypes of P. virginalis were inherited from the Everglades subpopulation of P. fallax. Comprehensive whole-genome sequencing also detected triploid specimens in the same subpopulation, which either represent evolutionarily important intermediate genotypes or independent parthenogenetic lineages arising among the sexual parent population. Our findings thus clarify the geographic origin of the marbled crayfish and identify potential mechanisms of parthenogenetic speciation.
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页数:6
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