Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea
Introduction Monogeneans of the genus Gyrodactylus were found on the gills of specimens of the bigeye sculpin Triglops nybelini Jensen, 1944 caught by trawl in the Barents Sea in January–February 2016. Methods Morphological preparations of the parasites were examined and photographed under a microsc...
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ftimr:oai:imr.brage.unit.no:11250/2728351 2024-09-15T17:57:49+00:00 Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea Hansen, Haakon Alvestad, Anja Helene MacKenzie, Ken Darrud, Mari Karlsbakk, Egil Hemmingsen, Willy Arneberg, Per 2020 application/pdf https://hdl.handle.net/11250/2728351 https://doi.org/10.2478/s11686-020-00208-z eng eng Norges forskningsråd: 228880 Acta Parasitologica. 2020, 65 793-803. urn:issn:1230-2821 https://hdl.handle.net/11250/2728351 https://doi.org/10.2478/s11686-020-00208-z cristin:1820237 793-803 65 Acta Parasitologica Peer reviewed Journal article 2020 ftimr https://doi.org/10.2478/s11686-020-00208-z 2024-07-31T03:37:25Z Introduction Monogeneans of the genus Gyrodactylus were found on the gills of specimens of the bigeye sculpin Triglops nybelini Jensen, 1944 caught by trawl in the Barents Sea in January–February 2016. Methods Morphological preparations of the parasites were examined and photographed under a microscope at magnifications of × 100–1000 and morphometric analyses were carried out on 22 specimens using ImageJ2 software. Eight of the specimens used for the morphological comparisons were also subjected to molecular analyses by sequencing a region of the ribosomal DNA spanning partial 18S, the internal transcribed spacers 1 and 2 (ITS1 and 2), 5.8S and partial 28S and comparing this with other species through a BlastN-search in GenBank and through phylogenetic analyses. Results The morphology of the species from T. nybelini was markedly different to that of any of other species of Gyrodactylus. It is characterized by having relatively long hamulus roots, a character that it shares with two other species described from marine sculpins (Cottidae); G. armatus and G. maculosi. It also has a narrow rectangular ventral bar membrane with a posterior notch which it shares with G. maculosi only. Compared with all the seven species from marine Cottidae described so far, it has the smallest opisthaptoral hard parts. A comparison of the internal transcribed spacer (ITS) rDNA sequence with available sequences in GenBank and a phylogenetic analyses also showed it to be highly divergent from other sequences. Therefore, a new species is proposed, Gyrodactylus triglopsi n. sp. Conclusion Both the morphological and molecular analyses support the status of G. triglopsi as a new species. This is to our knowledge the first species of Gyrodactylus described from Triglops nybelini and the description extends the list of Gyrodactylus species found on fish in the Barents Sea to 17. publishedVersion Article in Journal/Newspaper Barents Sea Institute for Marine Research: Brage IMR Acta Parasitologica 65 3 796 803 |
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Institute for Marine Research: Brage IMR |
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English |
description |
Introduction Monogeneans of the genus Gyrodactylus were found on the gills of specimens of the bigeye sculpin Triglops nybelini Jensen, 1944 caught by trawl in the Barents Sea in January–February 2016. Methods Morphological preparations of the parasites were examined and photographed under a microscope at magnifications of × 100–1000 and morphometric analyses were carried out on 22 specimens using ImageJ2 software. Eight of the specimens used for the morphological comparisons were also subjected to molecular analyses by sequencing a region of the ribosomal DNA spanning partial 18S, the internal transcribed spacers 1 and 2 (ITS1 and 2), 5.8S and partial 28S and comparing this with other species through a BlastN-search in GenBank and through phylogenetic analyses. Results The morphology of the species from T. nybelini was markedly different to that of any of other species of Gyrodactylus. It is characterized by having relatively long hamulus roots, a character that it shares with two other species described from marine sculpins (Cottidae); G. armatus and G. maculosi. It also has a narrow rectangular ventral bar membrane with a posterior notch which it shares with G. maculosi only. Compared with all the seven species from marine Cottidae described so far, it has the smallest opisthaptoral hard parts. A comparison of the internal transcribed spacer (ITS) rDNA sequence with available sequences in GenBank and a phylogenetic analyses also showed it to be highly divergent from other sequences. Therefore, a new species is proposed, Gyrodactylus triglopsi n. sp. Conclusion Both the morphological and molecular analyses support the status of G. triglopsi as a new species. This is to our knowledge the first species of Gyrodactylus described from Triglops nybelini and the description extends the list of Gyrodactylus species found on fish in the Barents Sea to 17. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hansen, Haakon Alvestad, Anja Helene MacKenzie, Ken Darrud, Mari Karlsbakk, Egil Hemmingsen, Willy Arneberg, Per |
spellingShingle |
Hansen, Haakon Alvestad, Anja Helene MacKenzie, Ken Darrud, Mari Karlsbakk, Egil Hemmingsen, Willy Arneberg, Per Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
author_facet |
Hansen, Haakon Alvestad, Anja Helene MacKenzie, Ken Darrud, Mari Karlsbakk, Egil Hemmingsen, Willy Arneberg, Per |
author_sort |
Hansen, Haakon |
title |
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
title_short |
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
title_full |
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
title_fullStr |
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
title_full_unstemmed |
Gyrodactylus triglopsi n. sp. (Monogenea: Gyrodactylidae) from the Gills of Triglops nybelini Jensen, 1944 (Teleostei: Cottidae) in the Barents Sea |
title_sort |
gyrodactylus triglopsi n. sp. (monogenea: gyrodactylidae) from the gills of triglops nybelini jensen, 1944 (teleostei: cottidae) in the barents sea |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2728351 https://doi.org/10.2478/s11686-020-00208-z |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
793-803 65 Acta Parasitologica |
op_relation |
Norges forskningsråd: 228880 Acta Parasitologica. 2020, 65 793-803. urn:issn:1230-2821 https://hdl.handle.net/11250/2728351 https://doi.org/10.2478/s11686-020-00208-z cristin:1820237 |
op_doi |
https://doi.org/10.2478/s11686-020-00208-z |
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Acta Parasitologica |
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65 |
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3 |
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796 |
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803 |
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1810434021374558208 |