1. Revision of the Laonice bahusiensis complex (Annelida: Spionidae) with a description of three new species
- Author
-
Joachim Langeneck, Maria Rousou, Lorenzo Pacciardi, Vasily V. Malyar, Arne Nygren, Daniel Martin, Vasily I. Radashevsky, Polina Borisova, João Gil, Barbara Mikac, Andrey Sikorski, Alberto Castelli, Lyudmila V. Pavlova, Sikorsky, Andrej, Radashevsky, Vasily, Castelli, Alberto, Pavlova, Lyudmila V., Nygren, Arne, Malyar, Vasily V., Borisova, Polina B., Mikac, Barbara, Rousou, Maria, Martin, Daniel, Gil, Joao, Pacciardi, Lorenzo, and Langeneck, Joachim
- Subjects
Morphology ,0106 biological sciences ,Systematics ,Species complex ,Annelida ,010607 zoology ,Zoology ,Spionida ,010603 evolutionary biology ,01 natural sciences ,Intraspecific competition ,COI ,Laonice antipoda ,Monophyly ,Mediterranean Sea ,Animalia ,Animals ,molecular analysis ,Clade ,Ecology, Evolution, Behavior and Systematics ,Taxonomy ,North Europe ,Polychaete ,biology ,Molecular analysis ,Polychaete, cryptic species, morphology, molecular analysis, COI, systematics, North Europe, Mediterranean Sea, Laonice antipoda ,Bayes Theorem ,Polychaeta ,Biodiversity ,biology.organism_classification ,Cryptic species ,Key (lock) ,Animal Science and Zoology ,Spionidae - Abstract
Este artículo contiene 31 páginas, 19 figuras, 3 tablas., The morphological reexamination of specimens previously identified as Laonice bahusiensis Söderström, 1920 from North European and Mediterranean collections, supported by the molecular analysis of freshly collected material, enabled the recognition of four different species in the region: the genuine L. bahusiensis, L. irinae n. sp. from North European waters, and L. grimaldii n. sp. and L. mediterranea n. sp. from the Mediterranean Sea. The morphology of these species is described and illustrated, and their distributions are clarified based on old and new materials. A key for their identification is also provided. The Bayesian analysis of the COI sequences (483 bp) showed that these four species form a clade, namely the L. bahusiensis species complex, morphologically characterized by the continuous dorsal crests on postbranchiate chaetigers in the adults. The genetic p-distances between the species of the complex ranged from 13.27% to 17.99%, while the intraspecific variability ranged from 0.6% to 1.57%. Together with the sister species Laonice cirrata (Sars, 1851), the L. bahusiensis complex formed the Laonice (Laonice) clade, which is morphologically characterized by the prostomium fused with the anterior peristomial margin. However, the monophyly of the L. bahusiensis complex, as well as that of the clade Laonice (Laonice), needs to be further supported through the analysis of a greater set of genes from a larger number of species.
- Published
- 2021