ArticleMolecular biology and evolution2015
Hybridization and the Origin of Contagious Asexuality in Daphnia pulex.
Article in Molecular biology and evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed, 65 citations in OpenAlex.
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- Trans-Specific Polymorphisms Between Cryptic Daphnia Species Affect Fitness and Behavior.Molecular ecology · 2025Article
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- Evolutionary Genomics of Sister Species Differing in Effective Population Sizes and Recombination Rates.Genome biology and evolution · 2023Article
- Contrasting Evolutionary Patterns Between Sexual and Asexual Lineages in a Genomic Region Linked to Reproductive Mode Variation in the pea aphid.Genome biology and evolution · 2023Article
- Transcriptomics and the origin of obligate parthenogenesis.Heredity · 2023Article
- Evolutionary Genomics of a Subdivided Species.Molecular biology and evolution · 2022Article
- Genetic Diversity, Heteroplasmy, and Recombination in Mitochondrial Genomes of Daphnia pulex, Daphnia pulicaria, and Daphnia obtusa.Molecular biology and evolution · 2022Article
- The transcriptomic signature of obligate parthenogenesis.Heredity · 2022Article
- Article
- Genome-Wide Allele-Specific Expression in Obligately Asexual Daphnia pulex and the Implications for the Genetic Basis of Asexuality.Genome biology and evolution · 2021Article
- The rapid, mass invasion of New Zealand by North AmericanLimnology and oceanography · 2021Article
- The life-history fitness of FInvertebrate biology : a quarterly journal of the American Microscopical Society and the Division of Invertebrate Zoology/ASZ · 2021Article
- Extremely Widespread Parthenogenesis and a Trade-Off Between Alternative Forms of Reproduction in Mayflies (Ephemeroptera).The Journal of heredity · 2021Article
- Identifying the fitness consequences of sex in complex natural environments.Evolution letters · 2020Article
- Poly-aneuploid cancer cells promote evolvability, generating lethal cancer.Evolutionary applications · 2020Article
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Authors and funding
9 authors at 1 institution in 2 countries.
Funding
Abstract
Hybridization plays a potentially important role in the origin of obligate parthenogenesis (OP) in many organisms. However, it remains controversial whether hybridization directly triggers the transition from sexual reproduction to obligate asexuality or a hybrid genetic background enables asexual species to persist. Furthermore, we know little about the specific genetic elements from the divergent, yet still hybridizing lineages responsible for this transition and how these elements are further spread to create other OP lineages. In this study, we address these questions in Daphnia pulex, where cyclically parthenogenetic (CP) and OP lineages coexist. Ancestry estimates and whole-genome association mapping using 32 OP isolates suggest that a complex hybridization history between the parental species D. pulex and D. pulicaria is responsible for the introgression of a set of 647 D. pulicaria single nucleotide polymorphism alleles that show perfect association with OP. Crossing experiments using males of OP lineages and females of CP lineages strongly support a polygenic basis for OP. Single-sperm analyses show that although normal meiotic recombination occurs in the production of haploid sperm by males of OP lineages, a significant proportion of such sperm are polyploid, suggesting that the spread of asexual elements through these males (i.e., contagious asexuality) is much less efficient than previously envisioned. Although the current Daphnia genome annotation does not provide mechanistic insight into the nature of the asexuality-associated alleles, these alleles should be considered as candidates for future investigations on the genetic underpinnings of OP.
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