A phylogenomic framework of Gastrotricha evolutionary relationships.
Fuente:
PubMed
Gespeichert in:
| Hauptverfasser: | , , , , , , , , |
|---|---|
| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Molecular phylogenetics and evolution
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1868266074600898561 |
|---|---|
| author | Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio |
| author_facet | Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio |
| collection | PubMed - marine biology |
| contents | A phylogenomic framework of Gastrotricha evolutionary relationships. Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio Phylogeny Animals Biological Evolution Sequence Analysis, DNA Evolution, Molecular Genomics Bayes Theorem Helminths Gastrotricha are microscopic acoelomate worms that play key ecological roles in marine and freshwater meiobenthic communities. For a long time, their relationships have been inferred primarily from morphology, or from molecular studies based on only a few genes, due to the scarcity of genomic resources. Here we analyzed 221 nuclear loci from 31 species spanning nine families (including 28 newly assembled genomes), providing the first phylogenomic framework for the phylum. Our results support the deep split between the two main orders, Macrodasyida and Chaetonotida, and clarify the long-debated position of Neodasys, which is consistently recovered as sister to Macrodasyida. Within Chaetonotida, our analyses confirm the monophyly of the recently established clade Oiorpata. Phylogenetic mapping indicates a single, primary marine-to-freshwater transition within Oiorpata. Since all oiorpatans are parthenogenetic, this suggests that the pre-existing reproductive mode may have facilitated the colonization of freshwater environments. Comparative genomic analyses reveal that Chaetonotida genomes have lost a defined set of conserved BUSCO genes, 9.6% in Muselliferidae + Xenotrichulidae and up to 11.2% in Oiorpata, indicating a broader genomic reorganization within the order. Together, these results provide both confirmation and new insights into the evolutionary history of Gastrotricha, demonstrating how expanding genomic datasets in understudied meiofaunal lineages can uncover hidden dimensions of metazoan genome evolution and diversification. |
| format | Artículo científico |
| id | pubmed_41802643 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Molecular phylogenetics and evolution |
| record_format | pubmed |
| spellingShingle | A phylogenomic framework of Gastrotricha evolutionary relationships. Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio Phylogeny Animals Biological Evolution Sequence Analysis, DNA Evolution, Molecular Genomics Bayes Theorem Helminths A phylogenomic framework of Gastrotricha evolutionary relationships. Wallnoefer, Oscar Kosakyan, Anush Cesaretti, Agata Saponi, Francesco Gammuto, Leandro Serra, Valentina Petroni, Giulio Plazzi, Federico Todaro, M Antonio Phylogeny Animals Biological Evolution Sequence Analysis, DNA Evolution, Molecular Genomics Bayes Theorem Helminths Gastrotricha are microscopic acoelomate worms that play key ecological roles in marine and freshwater meiobenthic communities. For a long time, their relationships have been inferred primarily from morphology, or from molecular studies based on only a few genes, due to the scarcity of genomic resources. Here we analyzed 221 nuclear loci from 31 species spanning nine families (including 28 newly assembled genomes), providing the first phylogenomic framework for the phylum. Our results support the deep split between the two main orders, Macrodasyida and Chaetonotida, and clarify the long-debated position of Neodasys, which is consistently recovered as sister to Macrodasyida. Within Chaetonotida, our analyses confirm the monophyly of the recently established clade Oiorpata. Phylogenetic mapping indicates a single, primary marine-to-freshwater transition within Oiorpata. Since all oiorpatans are parthenogenetic, this suggests that the pre-existing reproductive mode may have facilitated the colonization of freshwater environments. Comparative genomic analyses reveal that Chaetonotida genomes have lost a defined set of conserved BUSCO genes, 9.6% in Muselliferidae + Xenotrichulidae and up to 11.2% in Oiorpata, indicating a broader genomic reorganization within the order. Together, these results provide both confirmation and new insights into the evolutionary history of Gastrotricha, demonstrating how expanding genomic datasets in understudied meiofaunal lineages can uncover hidden dimensions of metazoan genome evolution and diversification. |
| title | A phylogenomic framework of Gastrotricha evolutionary relationships. |
| topic | Phylogeny Animals Biological Evolution Sequence Analysis, DNA Evolution, Molecular Genomics Bayes Theorem Helminths |
| url | https://pubmed.ncbi.nlm.nih.gov/41802643/ |