New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny
Marimermithid nematodes parasitising invertebrates are mainly found in the deep-sea environments. Several adult and juvenile specimens marimermithids of the genus Aborjinia have been found in bottom sediments and inside Polychaeta during recent cruises to the Kuril-Kamchatka trench and the Kuril Bas...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2024-01-01
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| Series: | ZooKeys |
| Online Access: | https://zookeys.pensoft.net/article/111825/download/pdf/ |
| _version_ | 1797351444175650816 |
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| author | Julia K. Zograf Alexander A. Semenchenko Vladimir V. Mordukhovich |
| author_facet | Julia K. Zograf Alexander A. Semenchenko Vladimir V. Mordukhovich |
| author_sort | Julia K. Zograf |
| collection | DOAJ |
| description | Marimermithid nematodes parasitising invertebrates are mainly found in the deep-sea environments. Several adult and juvenile specimens marimermithids of the genus Aborjinia have been found in bottom sediments and inside Polychaeta during recent cruises to the Kuril-Kamchatka trench and the Kuril Basin (the Sea of Okhotsk). New species are described based on integrative study. Aborjinia profunda sp. nov. differs from A. eulagiscae by the location of the ventral gland cell bodies (posterior to the nerve ring vs posterior to the cardia), by the smaller body size (23–28 mm vs 103–132 mm) and shorter tail (193–263 µm vs 500–850 µm). BI and ML phylogenetic analyses based on 18S and 28S rDNA suggest that genus Aborjinia belongs to the family Leptosomatidae. Based on molecular and morphological characters the new genus Paraborjinia gen. nov. is proposed for A. corallicola. Within the family Leptosomatidae the new genus differs from all genera except Aborjinia by its endoparasitic lifestyle and hologonic ovaries. Paraborjinia gen. nov. differs from Aborjinia by the position of cephalic sensitive organs (outer labial and cephalic papillae in two separate circles vs outer labial and cephalic papillae in one circle) and by the parasitic adult (vs free-living in Aborjinia). |
| first_indexed | 2024-03-08T12:59:33Z |
| format | Article |
| id | doaj.art-9ee09467a89d44ceadb1f31246057c93 |
| institution | Directory Open Access Journal |
| issn | 1313-2970 |
| language | English |
| last_indexed | 2024-03-08T12:59:33Z |
| publishDate | 2024-01-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | ZooKeys |
| spelling | doaj.art-9ee09467a89d44ceadb1f31246057c932024-01-19T11:01:07ZengPensoft PublishersZooKeys1313-29702024-01-01118923125610.3897/zookeys.1189.111825111825New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogenyJulia K. Zograf0Alexander A. Semenchenko1Vladimir V. Mordukhovich2A.V. Zhirmunsky National Scientific Center of Marine BiologyFederal Scientific Center of the East Asia Terrestrial BiodiversityFar Eastern Federal UniversityMarimermithid nematodes parasitising invertebrates are mainly found in the deep-sea environments. Several adult and juvenile specimens marimermithids of the genus Aborjinia have been found in bottom sediments and inside Polychaeta during recent cruises to the Kuril-Kamchatka trench and the Kuril Basin (the Sea of Okhotsk). New species are described based on integrative study. Aborjinia profunda sp. nov. differs from A. eulagiscae by the location of the ventral gland cell bodies (posterior to the nerve ring vs posterior to the cardia), by the smaller body size (23–28 mm vs 103–132 mm) and shorter tail (193–263 µm vs 500–850 µm). BI and ML phylogenetic analyses based on 18S and 28S rDNA suggest that genus Aborjinia belongs to the family Leptosomatidae. Based on molecular and morphological characters the new genus Paraborjinia gen. nov. is proposed for A. corallicola. Within the family Leptosomatidae the new genus differs from all genera except Aborjinia by its endoparasitic lifestyle and hologonic ovaries. Paraborjinia gen. nov. differs from Aborjinia by the position of cephalic sensitive organs (outer labial and cephalic papillae in two separate circles vs outer labial and cephalic papillae in one circle) and by the parasitic adult (vs free-living in Aborjinia).https://zookeys.pensoft.net/article/111825/download/pdf/ |
| spellingShingle | Julia K. Zograf Alexander A. Semenchenko Vladimir V. Mordukhovich New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny ZooKeys |
| title | New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny |
| title_full | New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny |
| title_fullStr | New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny |
| title_full_unstemmed | New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny |
| title_short | New deep-sea species of Aborjinia (Nematoda, Leptosomatidae) from the North-Western Pacific: an integrative taxonomy and phylogeny |
| title_sort | new deep sea species of aborjinia nematoda leptosomatidae from the north western pacific an integrative taxonomy and phylogeny |
| url | https://zookeys.pensoft.net/article/111825/download/pdf/ |
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