ArticleGenome biology and evolution2023
Evolutionary Genomics of Sister Species Differing in Effective Population Sizes and Recombination Rates.
Article in Genome biology and evolution, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Evolution of the highest fidelity DNA replication systems.bioRxiv : the preprint server for biology · 2026Article
- Adaptive radiation and structural tailoring of the VietnameseFrontiers in genetics · 2026Article
- The mosaicism of Cas-induced mutations and pleiotropic effects of scarlet gene in an emerging model system.Heredity · 2025Article
- Trans-Specific Polymorphisms Between Cryptic Daphnia Species Affect Fitness and Behavior.Molecular ecology · 2025Article
- Balancing selection and the functional effects of shared polymorphism in crypticbioRxiv : the preprint server for biology · 2024Article
- Efficient CRISPR genome editing and integrative genomic analyses reveal the mosaicism of Cas-induced mutations and pleiotropic effects ofbioRxiv : the preprint server for biology · 2024Article
- Analysis of the genome-editing activity of microinjected CRISPR/Cas9 ribonucleoprotein complexes inmicroPublication biology · 2024Article
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Authors and funding
3 authors.
Funding
Abstract
Studies of closely related species with known ecological differences provide exceptional opportunities for understanding the genetic mechanisms of evolution. In this study, we compared population-genomics data between Daphnia pulex and Daphnia pulicaria, two reproductively compatible sister species experiencing ecological speciation, the first largely confined to intermittent ponds and the second to permanent lakes in the same geographic region. Daphnia pulicaria has lower genome-wide nucleotide diversity, a smaller effective population size, a higher incidence of private alleles, and a substantially more linkage disequilibrium than D. pulex. Positively selected genes in D. pulicaria are enriched in potentially aging-related categories such as cellular homeostasis, which may explain the extended life span in D. pulicaria. We also found that opsin-related genes, which may mediate photoperiodic responses, are under different selection pressures in these two species. Genes involved in mitochondrial functions, ribosomes, and responses to environmental stimuli are found to be under positive selection in both species. Additionally, we found that the two species have similar average evolutionary rates at the DNA-sequence level, although approximately 160 genes have significantly different rates in the two lineages. Our results provide insights into the physiological traits that differ within this regionally sympatric sister-species pair that occupies unique microhabitats.
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