Abstract
A phyllodocid polychaete belonging to the genus Eulalia is reported from Nuevo Gulf, Patagonia (South-western Atlantic Ocean) with abundant populations thriving in the intertidal zone. Morphological and molecular data allowed assigning this population to Eulalia clavigera (Audouin & Milne-Edwards, 1834), a species typically occurring along the north-eastern Atlantic coast. The absence of genetic structuring between north-eastern and south-western Atlantic E. clavigera strongly supports a non-native origin of the Patagonian population. Conversely, the majority of the Mediterranean Eulalia cf. clavigera analysed in this study turned out to belong to a different, probably undescribed species, suggesting that the diversity and taxonomy of green Eulalia is more complex than previously supposed. The high adaptation capabilities to stressed environments showed by E. clavigera, along with its possible high impact on native assemblages through predation, compel to carefully monitor its spread along the Patagonian coasts.
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Acknowledgements
We would like to thank Fabio Bulleri, Marco Casu and Chiara Ravaglioli for their help in sampling the Mediterranean specimens of Eulalia cf. clavigera; Michele Barbieri and Federica Squarcia for their support in the molecular laboratory work. Ana Parma and the late Lobo Orensanz enthusiastically shared their home and experience, and the latter also participated in the collecting trips in Puerto Madryn. Lastly, we are grateful to two anonymous reviewers that greatly contributed to the improvement of the manuscript.
Funding
The EC-funded project no. 295,213, RECOMPRA, FP7-PEOPLE-2011-IRSES funded the sampling of E. clavigera in Puerto Madryn by TVF and FB.
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Langeneck, J., Diez, M.E., Nygren, A. et al. Worming its way into Patagonia: an integrative approach reveals the cryptic invasion by Eulalia clavigera (Annelida: Phyllodocidae). Mar Biodiv 49, 851–861 (2019). https://doi.org/10.1007/s12526-018-0864-y
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DOI: https://doi.org/10.1007/s12526-018-0864-y
Keywords
- Non-native species
- Phyllodocidae
- Predation
- Cryptogenic species
- Species complex
- Molecular characterisation