DNA barcodes of Antipode marine invertebrates in Bay of Biscay and Gulf of Lion ports suggest new biofouling challenges

Marine biological invasions threaten global biodiversity nowadays. In this article, we have studied fouling communities from 10 port areas of south Bay of Biscay (Atlantic Ocean) and Gulf of Lion (Mediterranean Sea). A total of 834 individuals were genetically barcoded and corresponded to 95 differe...

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Bibliographic Details
Published in:Scientific reports 2018-11, Vol.8 (1), p.16214-11, Article 16214
Main Authors: Miralles, L., Ardura, A., Clusa, L., Garcia-Vazquez, E.
Format: Article
Language:English
Subjects:
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Biodiversity
Biofouling
Deoxyribonucleic acid
DNA
Generalized linear models
Genetic diversity
Genetic screening
Humanities and Social Sciences
Imports
Indigenous species
Introduced species
Invasive species
Marine invertebrates
multidisciplinary
Phylogeny
Science
Science (multidisciplinary)
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Summary:Marine biological invasions threaten global biodiversity nowadays. In this article, we have studied fouling communities from 10 port areas of south Bay of Biscay (Atlantic Ocean) and Gulf of Lion (Mediterranean Sea). A total of 834 individuals were genetically barcoded and corresponded to 95 different species. A total of 76 native species 8 genera and 1 family were identified, 58 from the Bay of Biscay and 23 from the Gulf of Lion. Furthermore, 19 species were identified as non-indigenous or cryptogenic (18 from the Bay of Biscay and 4 from the Gulf of Lion). We found a high proportion of Antipode non-indigenous species (NIS) that represented the 19.3% of all sampled individuals and the 54.21% of NIS specimens of this study. A framework for inference of donor regions based on a phylogenetic screening of genetic sequences was proposed as a proof of concept and tested, as well as models for the relationship between NIS introductions, maritime imports and distance to NIS native range and inferred donor areas. Consistent generalized linear models (GLM) with positive association between NIS genetic diversity and distance, not with maritime growth weight imports, strongly suggest that distant NIS could pose higher invasion risk than closer species. Selection for wider tolerance ranges during the long travel –direct or stepwise, as well as environmental similarity between donor and receiving regions, may explain these results.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-34447-y