Phylogenetic Systematics of Ophryotrocha Annelids
Summary
Ophryotrocha comprises a diverse genus of small, predominantly marine annelids within the family Dorvilleidae. Phylogenetic systematics in this group integrates detailed morphological examination of chaetal and jaw structures with multilocus molecular data to resolve species boundaries and infer evolutionary relationships. Studies have revealed repeated colonisations of extreme habitats—such as hydrothermal vents, methane seeps and organic falls—with subsequent adaptive radiations driven by resource partitioning and physiological preadaptations. Global sampling has uncovered cryptic diversity, prompting the description of numerous new species and the reevaluation of established taxa. This framework not only refines taxonomy but also illuminates biogeographical patterns and mechanisms of annelid adaptation to both chemosynthetic and detrital ecosystems, with implications for biodiversity assessment and conservation of deep-sea communities.
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Phylogenetic Systematics of Ophryotrocha Annelids publication trend
The graph below shows the total number of articles in phylogenetic systematics of ophryotrocha annelids across all publications each year (not limited to Nature Index journals).
Technical terms
Phylogenetic systematics: An approach that reconstructs evolutionary relationships among organisms by integrating morphological and molecular data.
Clade: A group of organisms consisting of a common ancestor and all its descendants, representing a single branch on the tree of life.
Cytochrome oxidase I (COI): A mitochondrial gene widely used as a molecular barcode for species identification and phylogenetic inference.
16S ribosomal RNA gene: A conserved mitochondrial marker employed to resolve relationships at various taxonomic levels in invertebrates.
Histone H3 gene: A nuclear marker encoding a core histone protein, useful for phylogenetic analyses at shallow to moderate evolutionary depths.
References
- Adaptive radiation in extremophilic Dorvilleidae (Annelida): diversification of a single colonizer or multiple independent lineages?. Ecology and Evolution (2012).
- Four new species and further records of Dorvilleidae (Annelida, Polychaeta) from deep-sea organic substrata, NE Atlantic. European Journal of Taxonomy (2021).
- Ophryotrocha (Dorvilleidae, Polychaeta, Annelida) from deep-sea hydrothermal vents, with the description of five new species. European Journal of Taxonomy (2023).
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