The big, the small and the weird: A phylogenomic analysis of extant Priapulida DOI Creative Commons
Jan Raeker, Arianna Lord, María Herranz

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2025, Volume and Issue: unknown, P. 108297 - 108297

Published: Jan. 1, 2025

Priapulida is a small phylum of 22 described species that are divided into two size classes (microscopic and macroscopic), distinguished by adult larval morphology. Most priapulidans rare or live in inaccessible habitats, freshly collected material for molecular studies difficult to obtain. With this study, we the first time aim resolve phylogeny extant using transcriptomic, genomic, morphological data. We analyze six newly assembled transcriptomes alongside existing data, covering seven four genera. Additionally, include genomic data from museum-preserved species, adding another genus via low-coverage genome sequencing. Conserved regions these produce combined phylogenomic tree, augmented suggest positions taxa Acanthopriapulus Maccabeus. Our findings show microscopic Meiopriapulus consistently groups as sister taxon other not with Tubiluchus, suggested previous studies. Maccabeus, which exhibits both size-class characteristics, all macroscopic while Priapulus, but needed support their positions. Ancestral state reconstruction suggests body size, lack caudal appendages, internal fertilization ancestral traits Priapulida. This supports derived evolution group, aligning its Kinorhyncha Loricifera. Due diversity unique morphologies some further fossil potential discoveries priapulidan microfossils essential fully understand evolutionary history phylum.

Language: Английский

The big, the small and the weird: A phylogenomic analysis of extant Priapulida DOI Creative Commons
Jan Raeker, Arianna Lord, María Herranz

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2025, Volume and Issue: unknown, P. 108297 - 108297

Published: Jan. 1, 2025

Priapulida is a small phylum of 22 described species that are divided into two size classes (microscopic and macroscopic), distinguished by adult larval morphology. Most priapulidans rare or live in inaccessible habitats, freshly collected material for molecular studies difficult to obtain. With this study, we the first time aim resolve phylogeny extant using transcriptomic, genomic, morphological data. We analyze six newly assembled transcriptomes alongside existing data, covering seven four genera. Additionally, include genomic data from museum-preserved species, adding another genus via low-coverage genome sequencing. Conserved regions these produce combined phylogenomic tree, augmented suggest positions taxa Acanthopriapulus Maccabeus. Our findings show microscopic Meiopriapulus consistently groups as sister taxon other not with Tubiluchus, suggested previous studies. Maccabeus, which exhibits both size-class characteristics, all macroscopic while Priapulus, but needed support their positions. Ancestral state reconstruction suggests body size, lack caudal appendages, internal fertilization ancestral traits Priapulida. This supports derived evolution group, aligning its Kinorhyncha Loricifera. Due diversity unique morphologies some further fossil potential discoveries priapulidan microfossils essential fully understand evolutionary history phylum.

Language: Английский

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