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Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal

Interoceanic canals can facilitate biological invasions as they connect the world's oceans and remove dispersal barriers between bioregions. As a consequence, multiple opportunities for biotic exchange arise and the resulting establishment of migrant species often causes adverse ecological and...

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Autores principales: Schreiber, Lennart, Castellanos‐Galindo, Gustavo A., Robertson, D. Ross, Torchin, Mark, Chavarria, Karina, Laakmann, Silke, Saltonstall, Kristin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9884569/
https://www.ncbi.nlm.nih.gov/pubmed/36726876
http://dx.doi.org/10.1002/ece3.9675
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author Schreiber, Lennart
Castellanos‐Galindo, Gustavo A.
Robertson, D. Ross
Torchin, Mark
Chavarria, Karina
Laakmann, Silke
Saltonstall, Kristin
author_facet Schreiber, Lennart
Castellanos‐Galindo, Gustavo A.
Robertson, D. Ross
Torchin, Mark
Chavarria, Karina
Laakmann, Silke
Saltonstall, Kristin
author_sort Schreiber, Lennart
collection PubMed
description Interoceanic canals can facilitate biological invasions as they connect the world's oceans and remove dispersal barriers between bioregions. As a consequence, multiple opportunities for biotic exchange arise and the resulting establishment of migrant species often causes adverse ecological and economic impacts. The Panama Canal is a key region for biotic exchange as it connects the Pacific and Atlantic Oceans in Central America. In this study, we used two complementary methods (environmental DNA (eDNA) metabarcoding and gillnetting) to survey fish communities in this unique waterway. Using COI (cytochrome oxidase subunit I) metabarcoding, we detected a total of 142 fish species, including evidence for the presence of sixteen Atlantic and eight Pacific marine fish in different freshwater sections of the Canal. Of these, nine are potentially new records. Molecular data did not capture all species caught with gillnets, but generally provided a more complete image of the known fish fauna as more small‐bodied fish species were detected. Diversity indices based on eDNA surveys revealed significant differences across different sections of the Canal reflecting in part the prevailing environmental conditions. The observed increase in the presence of marine fish species in the Canal indicates a growing potential for interoceanic fish invasions. The potential ecological and evolutionary consequences of this increase in marine fishes are not only restricted to the fish fauna in the Canal as they could also impact adjacent ecosystems in the Pacific and Atlantic Oceans.
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spelling pubmed-98845692023-01-31 Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal Schreiber, Lennart Castellanos‐Galindo, Gustavo A. Robertson, D. Ross Torchin, Mark Chavarria, Karina Laakmann, Silke Saltonstall, Kristin Ecol Evol Research Articles Interoceanic canals can facilitate biological invasions as they connect the world's oceans and remove dispersal barriers between bioregions. As a consequence, multiple opportunities for biotic exchange arise and the resulting establishment of migrant species often causes adverse ecological and economic impacts. The Panama Canal is a key region for biotic exchange as it connects the Pacific and Atlantic Oceans in Central America. In this study, we used two complementary methods (environmental DNA (eDNA) metabarcoding and gillnetting) to survey fish communities in this unique waterway. Using COI (cytochrome oxidase subunit I) metabarcoding, we detected a total of 142 fish species, including evidence for the presence of sixteen Atlantic and eight Pacific marine fish in different freshwater sections of the Canal. Of these, nine are potentially new records. Molecular data did not capture all species caught with gillnets, but generally provided a more complete image of the known fish fauna as more small‐bodied fish species were detected. Diversity indices based on eDNA surveys revealed significant differences across different sections of the Canal reflecting in part the prevailing environmental conditions. The observed increase in the presence of marine fish species in the Canal indicates a growing potential for interoceanic fish invasions. The potential ecological and evolutionary consequences of this increase in marine fishes are not only restricted to the fish fauna in the Canal as they could also impact adjacent ecosystems in the Pacific and Atlantic Oceans. John Wiley and Sons Inc. 2023-01-29 /pmc/articles/PMC9884569/ /pubmed/36726876 http://dx.doi.org/10.1002/ece3.9675 Text en © 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Schreiber, Lennart
Castellanos‐Galindo, Gustavo A.
Robertson, D. Ross
Torchin, Mark
Chavarria, Karina
Laakmann, Silke
Saltonstall, Kristin
Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title_full Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title_fullStr Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title_full_unstemmed Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title_short Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal
title_sort environmental dna (edna) reveals potential for interoceanic fish invasions across the panama canal
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9884569/
https://www.ncbi.nlm.nih.gov/pubmed/36726876
http://dx.doi.org/10.1002/ece3.9675
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