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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Molecular ecology
2025
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| Accesso online: | https://pubmed.ncbi.nlm.nih.gov/40590190/ |
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| _version_ | 1868266184095301632 |
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| author | de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana |
| author_facet | de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana |
| collection | PubMed - marine biology |
| contents | No Mate, No Problem: Molecular Mechanisms Involved in Parthenogenesis in the Cosmopolitan Earthworm Aporrectodea trapezoides (Annelida, Clitellata). de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana Animals Parthenogenesis Oligochaeta Reproduction Microbiota Genotype Algeria Genetics, Population Approximately, 40% of earthworm species can reproduce by parthenogenesis. This is the case for the cosmopolitan species, Aporrectodea trapezoides, although sexual forms have been described sporadically. We analyse the genotypes and microbiomes of 30 individuals from four localities where both forms appear in order to understand the evolutionary mechanisms related to parthenogenesis. In all sites, heterozygosity values were approximately 30% higher in parthenogenetic individuals. However, we detected a stronger genomic structuring due to reproduction than to the geographical setting only in the Algerian population, underpinned by 195 loci that were related to gametogenesis, symbiont-like processes, and nitrate reduction. Similarly, statistical differences in the abundance of ZOTUs were only found between the Algerian sexual and parthenogenetic earthworms, with 754 ZOTUs that included the genus Romboutsia, which is involved in the production of nitric oxide, which enhances sperm motility. In summary, significant genomic and microbiome differences were found only between sexual and parthenogenetic lineages in a single locality. We hypothesise that obligate parthenogenesis evolved early, leaving traces at the genomic and microbiome levels in the Algerian parthenogens that were the earliest splitting lineage. Such obligate parthenogenesis was lost secondarily and individuals in the Iberian sites were facultative parthenogens, with the potential to copulate and therefore erase the genomic and microbial traces of obligate parthenogenesis. Our results indicate a hybrid origin of parthenogenesis in A. trapezoides and shed light on the complex interplay between genomic, microbiome, and reproductive mechanisms in A. trapezoides. |
| format | Artículo científico |
| id | pubmed_40590190 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Molecular ecology |
| record_format | pubmed |
| spellingShingle | No Mate, No Problem: Molecular Mechanisms Involved in Parthenogenesis in the Cosmopolitan Earthworm Aporrectodea trapezoides (Annelida, Clitellata). de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana Animals Parthenogenesis Oligochaeta Reproduction Microbiota Genotype Algeria Genetics, Population No Mate, No Problem: Molecular Mechanisms Involved in Parthenogenesis in the Cosmopolitan Earthworm Aporrectodea trapezoides (Annelida, Clitellata). de Sosa, Irene Turon, Marta Taboada, Sergi Lorente-Sorolla, José Fernández, Rosa Tilikj, Natasha Piris, Alberto Novo, Marta Álvarez Campos, Patricia Riesgo, Ana Animals Parthenogenesis Oligochaeta Reproduction Microbiota Genotype Algeria Genetics, Population Approximately, 40% of earthworm species can reproduce by parthenogenesis. This is the case for the cosmopolitan species, Aporrectodea trapezoides, although sexual forms have been described sporadically. We analyse the genotypes and microbiomes of 30 individuals from four localities where both forms appear in order to understand the evolutionary mechanisms related to parthenogenesis. In all sites, heterozygosity values were approximately 30% higher in parthenogenetic individuals. However, we detected a stronger genomic structuring due to reproduction than to the geographical setting only in the Algerian population, underpinned by 195 loci that were related to gametogenesis, symbiont-like processes, and nitrate reduction. Similarly, statistical differences in the abundance of ZOTUs were only found between the Algerian sexual and parthenogenetic earthworms, with 754 ZOTUs that included the genus Romboutsia, which is involved in the production of nitric oxide, which enhances sperm motility. In summary, significant genomic and microbiome differences were found only between sexual and parthenogenetic lineages in a single locality. We hypothesise that obligate parthenogenesis evolved early, leaving traces at the genomic and microbiome levels in the Algerian parthenogens that were the earliest splitting lineage. Such obligate parthenogenesis was lost secondarily and individuals in the Iberian sites were facultative parthenogens, with the potential to copulate and therefore erase the genomic and microbial traces of obligate parthenogenesis. Our results indicate a hybrid origin of parthenogenesis in A. trapezoides and shed light on the complex interplay between genomic, microbiome, and reproductive mechanisms in A. trapezoides. |
| title | No Mate, No Problem: Molecular Mechanisms Involved in Parthenogenesis in the Cosmopolitan Earthworm Aporrectodea trapezoides (Annelida, Clitellata). |
| topic | Animals Parthenogenesis Oligochaeta Reproduction Microbiota Genotype Algeria Genetics, Population |
| url | https://pubmed.ncbi.nlm.nih.gov/40590190/ |