Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes
The genus Gammarus (Amphipoda) is one of the most speciose genera of Crustacea, yet much uncertainty remains concerning taxonomy and systematic relationships, particularly for brackish and marine forms. We used DNA barcode sequences from the mitochondrial cytochrome c oxidase I (COI) gene to probe t...
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Taylor and Francis
2009
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ftunivhullir:oai:hull-repository.worktribe.com:396227 2024-09-15T18:23:46+00:00 Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes Costa, F. O. Henzler, C. M. Lunt, D. H. Whiteley, N. M. Rock, J. 2009-12-31 https://hull-repository.worktribe.com/output/396227 https://doi.org/10.1017/S1477200009990120 English eng Taylor and Francis https://hull-repository.worktribe.com/output/396227 SYSTEMATICS AND BIODIVERSITY Volume 7 Issue 4 Pagination 365-379 doi:https://doi.org/10.1017/S1477200009990120 1477-2000 doi:10.1017/S1477200009990120 Plant Science Ecology Evolution Behavior and Systematics Journal Article 2009 ftunivhullir https://doi.org/10.1017/S1477200009990120 2024-07-22T14:05:20Z The genus Gammarus (Amphipoda) is one of the most speciose genera of Crustacea, yet much uncertainty remains concerning taxonomy and systematic relationships, particularly for brackish and marine forms. We used DNA barcode sequences from the mitochondrial cytochrome c oxidase I (COI) gene to probe the taxonomy of prominent members of marine and brackish water Gammarus of the North Atlantic, Baltic, Mediterranean and Black Seas. We investigated 16 putative Gammarus spp. at an average number of 9 specimens per species. This constitutes the most taxonomically and geographically comprehensive molecular study of marine Gammarus to date. Average between-species sequence divergence (26.8%) was much higher than intraspecific distances (0.8%), enabling clear molecular species identification and highlighting several possible misidentifications from previously published studies. Specimens of Gammarus aequicauda and G. insensibilis from the Black Sea were at least 14% distant from their putative conspecifics elsewhere. Placing these findings in a geographic context provides strong indication of cryptic speciation. Further, we detected phylogeographic splits in G. oceanicus and G. duebeni. Our analyses also suggest phylogenetic positioning of G. marinus with members of the genus Echinogammarus, thus confirming its classification as Echinogammarus marinus. We have demonstrated that comprehensive analyses of taxonomically complex groups using DNA barcodes can result in a diversity of complementary data on taxonomy, phylogeography and phylogenetics. The combination of these results, with further morphological and ecological data, will enable significant progress in our understanding of this ecologically important group of crustaceans. Article in Journal/Newspaper North Atlantic University of Hull: Repository@Hull Systematics and Biodiversity 7 4 365 379 |
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Open Polar |
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University of Hull: Repository@Hull |
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ftunivhullir |
language |
English |
topic |
Plant Science Ecology Evolution Behavior and Systematics |
spellingShingle |
Plant Science Ecology Evolution Behavior and Systematics Costa, F. O. Henzler, C. M. Lunt, D. H. Whiteley, N. M. Rock, J. Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
topic_facet |
Plant Science Ecology Evolution Behavior and Systematics |
description |
The genus Gammarus (Amphipoda) is one of the most speciose genera of Crustacea, yet much uncertainty remains concerning taxonomy and systematic relationships, particularly for brackish and marine forms. We used DNA barcode sequences from the mitochondrial cytochrome c oxidase I (COI) gene to probe the taxonomy of prominent members of marine and brackish water Gammarus of the North Atlantic, Baltic, Mediterranean and Black Seas. We investigated 16 putative Gammarus spp. at an average number of 9 specimens per species. This constitutes the most taxonomically and geographically comprehensive molecular study of marine Gammarus to date. Average between-species sequence divergence (26.8%) was much higher than intraspecific distances (0.8%), enabling clear molecular species identification and highlighting several possible misidentifications from previously published studies. Specimens of Gammarus aequicauda and G. insensibilis from the Black Sea were at least 14% distant from their putative conspecifics elsewhere. Placing these findings in a geographic context provides strong indication of cryptic speciation. Further, we detected phylogeographic splits in G. oceanicus and G. duebeni. Our analyses also suggest phylogenetic positioning of G. marinus with members of the genus Echinogammarus, thus confirming its classification as Echinogammarus marinus. We have demonstrated that comprehensive analyses of taxonomically complex groups using DNA barcodes can result in a diversity of complementary data on taxonomy, phylogeography and phylogenetics. The combination of these results, with further morphological and ecological data, will enable significant progress in our understanding of this ecologically important group of crustaceans. |
format |
Article in Journal/Newspaper |
author |
Costa, F. O. Henzler, C. M. Lunt, D. H. Whiteley, N. M. Rock, J. |
author_facet |
Costa, F. O. Henzler, C. M. Lunt, D. H. Whiteley, N. M. Rock, J. |
author_sort |
Costa, F. O. |
title |
Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
title_short |
Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
title_full |
Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
title_fullStr |
Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
title_full_unstemmed |
Probing marine Gammarus (Amphipoda) taxonomy with DNA barcodes |
title_sort |
probing marine gammarus (amphipoda) taxonomy with dna barcodes |
publisher |
Taylor and Francis |
publishDate |
2009 |
url |
https://hull-repository.worktribe.com/output/396227 https://doi.org/10.1017/S1477200009990120 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://hull-repository.worktribe.com/output/396227 SYSTEMATICS AND BIODIVERSITY Volume 7 Issue 4 Pagination 365-379 doi:https://doi.org/10.1017/S1477200009990120 1477-2000 doi:10.1017/S1477200009990120 |
op_doi |
https://doi.org/10.1017/S1477200009990120 |
container_title |
Systematics and Biodiversity |
container_volume |
7 |
container_issue |
4 |
container_start_page |
365 |
op_container_end_page |
379 |
_version_ |
1810464033718927360 |