Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean
Two new marine nematode species of the genus Sabatieria and a new record of Hopperia beaglense Chen & Vincx, 1998 belonging to the family Comesomatidae are described from the Southern Ocean using morphological and molecular data. Sabatieria cosmonautae sp. nov. is characterized by body l...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2025-07-01
|
| Series: | ZooKeys |
| Online Access: | https://zookeys.pensoft.net/article/135491/download/pdf/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850117366924443648 |
|---|---|
| author | Sujing Fu Jianfeng Mou Kun Liu Shuyi Zhang Heshan Lin |
| author_facet | Sujing Fu Jianfeng Mou Kun Liu Shuyi Zhang Heshan Lin |
| author_sort | Sujing Fu |
| collection | DOAJ |
| description | Two new marine nematode species of the genus Sabatieria and a new record of Hopperia beaglense Chen & Vincx, 1998 belonging to the family Comesomatidae are described from the Southern Ocean using morphological and molecular data. Sabatieria cosmonautae sp. nov. is characterized by body length 1786–2230 μm, short cephalic setae, lateral differentiation of body cuticle with sparse punctations starting from amphid to near tail tip, spiral amphidial fovea with three turns, spicules arcuate and 1.2–1.5 cloacal body diameters long, with straight dorso-caudal gubernacular apophyses, and 16 or 17 precloacal supplements. Sabatieria crassilonga sp. nov. is characterized by body length 2628–3613 μm, short cephalic setae, cuticle with lateral differentiation of coarser and irregularly spaced punctations extending from anterior edge of amphid to the tail region, amphidial fovea spiral with 2.5 turns, males with spicules 1.2–1.5 cloacal body diameters long, gubernaculum with a long straight dorso-caudal apophysis, and 20 or 21 fine precloacal supplements. Hopperia beaglense, which was originally described from the Strait of Magellan and the Beagle Channel, is recorded from the Southern Ocean for the first time. Phylogenetic analysis based on concatenated 18S + 28S rRNA sequences places the two new species and the new record within Comesomatidae. The tree topology shows Comesomatidae forming a well-supported monophyletic clade, whereas the genus Sabatieria is not monophyletic. |
| format | Article |
| id | doaj-art-e649448ec4d5435a8eb749d1284da5d0 |
| institution | OA Journals |
| issn | 1313-2970 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | ZooKeys |
| spelling | doaj-art-e649448ec4d5435a8eb749d1284da5d02025-08-20T02:36:06ZengPensoft PublishersZooKeys1313-29702025-07-01124412114510.3897/zookeys.1244.135491135491Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern OceanSujing Fu0Jianfeng Mou1Kun Liu2Shuyi Zhang3Heshan Lin4Third Institute of Oceanography, Ministry of Natural ResourcesThird Institute of Oceanography, Ministry of Natural ResourcesThird Institute of Oceanography, Ministry of Natural ResourcesThird Institute of Oceanography, Ministry of Natural ResourcesThird Institute of Oceanography, Ministry of Natural ResourcesTwo new marine nematode species of the genus Sabatieria and a new record of Hopperia beaglense Chen & Vincx, 1998 belonging to the family Comesomatidae are described from the Southern Ocean using morphological and molecular data. Sabatieria cosmonautae sp. nov. is characterized by body length 1786–2230 μm, short cephalic setae, lateral differentiation of body cuticle with sparse punctations starting from amphid to near tail tip, spiral amphidial fovea with three turns, spicules arcuate and 1.2–1.5 cloacal body diameters long, with straight dorso-caudal gubernacular apophyses, and 16 or 17 precloacal supplements. Sabatieria crassilonga sp. nov. is characterized by body length 2628–3613 μm, short cephalic setae, cuticle with lateral differentiation of coarser and irregularly spaced punctations extending from anterior edge of amphid to the tail region, amphidial fovea spiral with 2.5 turns, males with spicules 1.2–1.5 cloacal body diameters long, gubernaculum with a long straight dorso-caudal apophysis, and 20 or 21 fine precloacal supplements. Hopperia beaglense, which was originally described from the Strait of Magellan and the Beagle Channel, is recorded from the Southern Ocean for the first time. Phylogenetic analysis based on concatenated 18S + 28S rRNA sequences places the two new species and the new record within Comesomatidae. The tree topology shows Comesomatidae forming a well-supported monophyletic clade, whereas the genus Sabatieria is not monophyletic.https://zookeys.pensoft.net/article/135491/download/pdf/ |
| spellingShingle | Sujing Fu Jianfeng Mou Kun Liu Shuyi Zhang Heshan Lin Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean ZooKeys |
| title | Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean |
| title_full | Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean |
| title_fullStr | Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean |
| title_full_unstemmed | Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean |
| title_short | Two new species and a new record of Comesomatidae (Nematoda, Araeolaimida) from the Southern Ocean |
| title_sort | two new species and a new record of comesomatidae nematoda araeolaimida from the southern ocean |
| url | https://zookeys.pensoft.net/article/135491/download/pdf/ |
| work_keys_str_mv | AT sujingfu twonewspeciesandanewrecordofcomesomatidaenematodaaraeolaimidafromthesouthernocean AT jianfengmou twonewspeciesandanewrecordofcomesomatidaenematodaaraeolaimidafromthesouthernocean AT kunliu twonewspeciesandanewrecordofcomesomatidaenematodaaraeolaimidafromthesouthernocean AT shuyizhang twonewspeciesandanewrecordofcomesomatidaenematodaaraeolaimidafromthesouthernocean AT heshanlin twonewspeciesandanewrecordofcomesomatidaenematodaaraeolaimidafromthesouthernocean |