Phylogeographic reconstruction of the marbled crayfish origin
Autor: | Hannes Horn, Nathan J. Dorn, Christopher E Skelton, Stephan Wolf, Katharina Hanna, Julian Gutekunst, Frank Lyko, Olena Maiakovska, Panagiotis Provataris |
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Rok vydání: | 2021 |
Předmět: |
Genotype
Genetic Speciation QH301-705.5 media_common.quotation_subject Parthenogenesis Population Medicine (miscellaneous) Zoology Evolutionary biology Astacoidea Article Evolutionary genetics General Biochemistry Genetics and Molecular Biology Animals Biology (General) education media_common education.field_of_study Genome biology Haplotype Crayfish biology.organism_classification Biological Evolution Phylogeography Speciation Procambarus fallax Ploidy General Agricultural and Biological Sciences |
Zdroj: | Communications Biology, Vol 4, Iss 1, Pp 1-6 (2021) Communications Biology |
ISSN: | 2399-3642 |
Popis: | 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. 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. |
Databáze: | OpenAIRE |
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