How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods
Accurate stock assessments for each of the dominant species of sand lances in the northeast Atlantic Ocean and adjacent areas are not available due to the lack of a reliable identification procedure; therefore, appropriate measures of fisheries management or conservation of sand lances cannot be imp...
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Online Access: | https://doi.org/10.3897/zookeys.617.8866 |
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ftzenodo:oai:zenodo.org:154108 2024-09-15T18:25:20+00:00 How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods Thiel, Ralf Knebelsberger, Thomas 2016-09-15 https://doi.org/10.3897/zookeys.617.8866 unknown Zenodo https://zenodo.org/communities/biosyslit https://doi.org/10.3897/zookeys.617.8866 oai:zenodo.org:154108 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode ZooKeys, 617, 139-164, (2016-09-15) Ammodytes COI DNA barcoding Hyperoplus meristic characters mitochondrial DNA morphology morphometrics northeast Atlantic nuclear gene Rhodopsin Sand lances species identification info:eu-repo/semantics/article 2016 ftzenodo https://doi.org/10.3897/zookeys.617.8866 2024-07-25T21:50:45Z Accurate stock assessments for each of the dominant species of sand lances in the northeast Atlantic Ocean and adjacent areas are not available due to the lack of a reliable identification procedure; therefore, appropriate measures of fisheries management or conservation of sand lances cannot be implemented. In this study, detailed morphological and molecular features are assessed to discriminate between four species of sand lances belonging to the genera Ammodytes and Hyperoplus. Morphological characters described by earlier authors as useful for identification of the genera are confirmed, and two additional distinguishing characters are added. A combination of the following morphological characters is recommended to distinguish between the genera Hyperoplus and Ammodytes: the protrusibility of the premaxillae, the presence of hooked ends of the prevomer, the number of dermal plicae, and the pectoral-fin length as a percentage of the standard length. The discriminant function analysis revealed that morphometric data are not very useful to distinguish the species of each of the two genera. The following meristic characters improve the separation of H. lanceolatus from H. immaculatus: the number of lower arch gill rakers, total number of gill rakers, numbers of caudal vertebrae and total vertebrae, and numbers of dorsal-fin and anal-fin rays. It is confirmed that A. tobianus differs from A. marinus by its belly scales that are organised in tight chevrons, scales which are present over the musculature at the base of the caudal fin, as well as by the lower numbers of dermal plicae, dorsal-fin rays, and total vertebrae. In contrast to the morphological data, mitochondrial COI sequences (DNA barcodes) failed to separate unambiguously the four investigated species. Ammodytes tobianus and H. lanceolatus showed an overlap between intraspecific and interspecific K2P genetic distances and cannot be reliably distinguished using the common DNA barcoding approach. Ammodytes marinus and H. immaculatus exhibited gaps between ... Article in Journal/Newspaper Northeast Atlantic Zenodo ZooKeys 617 139 164 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Ammodytes COI DNA barcoding Hyperoplus meristic characters mitochondrial DNA morphology morphometrics northeast Atlantic nuclear gene Rhodopsin Sand lances species identification |
spellingShingle |
Ammodytes COI DNA barcoding Hyperoplus meristic characters mitochondrial DNA morphology morphometrics northeast Atlantic nuclear gene Rhodopsin Sand lances species identification Thiel, Ralf Knebelsberger, Thomas How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
topic_facet |
Ammodytes COI DNA barcoding Hyperoplus meristic characters mitochondrial DNA morphology morphometrics northeast Atlantic nuclear gene Rhodopsin Sand lances species identification |
description |
Accurate stock assessments for each of the dominant species of sand lances in the northeast Atlantic Ocean and adjacent areas are not available due to the lack of a reliable identification procedure; therefore, appropriate measures of fisheries management or conservation of sand lances cannot be implemented. In this study, detailed morphological and molecular features are assessed to discriminate between four species of sand lances belonging to the genera Ammodytes and Hyperoplus. Morphological characters described by earlier authors as useful for identification of the genera are confirmed, and two additional distinguishing characters are added. A combination of the following morphological characters is recommended to distinguish between the genera Hyperoplus and Ammodytes: the protrusibility of the premaxillae, the presence of hooked ends of the prevomer, the number of dermal plicae, and the pectoral-fin length as a percentage of the standard length. The discriminant function analysis revealed that morphometric data are not very useful to distinguish the species of each of the two genera. The following meristic characters improve the separation of H. lanceolatus from H. immaculatus: the number of lower arch gill rakers, total number of gill rakers, numbers of caudal vertebrae and total vertebrae, and numbers of dorsal-fin and anal-fin rays. It is confirmed that A. tobianus differs from A. marinus by its belly scales that are organised in tight chevrons, scales which are present over the musculature at the base of the caudal fin, as well as by the lower numbers of dermal plicae, dorsal-fin rays, and total vertebrae. In contrast to the morphological data, mitochondrial COI sequences (DNA barcodes) failed to separate unambiguously the four investigated species. Ammodytes tobianus and H. lanceolatus showed an overlap between intraspecific and interspecific K2P genetic distances and cannot be reliably distinguished using the common DNA barcoding approach. Ammodytes marinus and H. immaculatus exhibited gaps between ... |
format |
Article in Journal/Newspaper |
author |
Thiel, Ralf Knebelsberger, Thomas |
author_facet |
Thiel, Ralf Knebelsberger, Thomas |
author_sort |
Thiel, Ralf |
title |
How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
title_short |
How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
title_full |
How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
title_fullStr |
How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
title_full_unstemmed |
How reliably can northeast Atlantic sand lances of the genera Ammodytes and Hyperoplus be distinguished? A comparative application of morphological and molecular methods |
title_sort |
how reliably can northeast atlantic sand lances of the genera ammodytes and hyperoplus be distinguished? a comparative application of morphological and molecular methods |
publisher |
Zenodo |
publishDate |
2016 |
url |
https://doi.org/10.3897/zookeys.617.8866 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ZooKeys, 617, 139-164, (2016-09-15) |
op_relation |
https://zenodo.org/communities/biosyslit https://doi.org/10.3897/zookeys.617.8866 oai:zenodo.org:154108 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3897/zookeys.617.8866 |
container_title |
ZooKeys |
container_volume |
617 |
container_start_page |
139 |
op_container_end_page |
164 |
_version_ |
1810465832141062144 |