New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin
The Selachinematidae is a globally distributed family of predatory nematodes found from shallow waters to the abyssal plain. Here, three new species of Halichoanolaimus de Man, 1886 (H. ossilagulus sp. nov., H. funestus sp. nov. and H. pumilus sp. nov.) and one known species (H. ovalis Ditlevsen, 19...
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ftdoajarticles:oai:doaj.org/article:9c9332ded388436db82de28410be4841 2023-05-15T18:25:37+02:00 New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin Daniel Leduc 2020-12-01T00:00:00Z https://doi.org/10.5852/ejt.2020.726.1175 https://doaj.org/article/9c9332ded388436db82de28410be4841 EN eng Consortium of European Natural History Museums https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1175 https://doaj.org/toc/2118-9773 doi:10.5852/ejt.2020.726.1175 2118-9773 https://doaj.org/article/9c9332ded388436db82de28410be4841 European Journal of Taxonomy, Vol 726, Iss 1 (2020) Blind intestine pseudocoelomocytes pore complexes continental slope Kaikōura Canyon Zoology QL1-991 Botany QK1-989 article 2020 ftdoajarticles https://doi.org/10.5852/ejt.2020.726.1175 2022-12-31T08:25:07Z The Selachinematidae is a globally distributed family of predatory nematodes found from shallow waters to the abyssal plain. Here, three new species of Halichoanolaimus de Man, 1886 (H. ossilagulus sp. nov., H. funestus sp. nov. and H. pumilus sp. nov.) and one known species (H. ovalis Ditlevsen, 1921) are described from the New Zealand continental margin, thus bringing the total number of selachinematid species recorded from the New Zealand region to 14 and the total number of species of Halichoanolaimus to 26. The range of H. ovalis is extended from the Southern Ocean to the Southwest Pacific Ocean (latitude 42° S to 53° S); the depth range of this species, which was originally described from the littoral zone, is also extended to 1061 m depth. Dorsosublateral rows of pore complexes and pseudocoelomocytes, features that have either rarely or not been recorded previously in the genus, were observed in all four species described here. The taxonomic significance of these features remains to be ascertained for the family and will require observations of other species of Halichoanolaimus and selachinematid genera. Pseudocoelomocytes and pore complexes may have an excretory function, thus aiding to process the waste products of digestion in selachinematid taxa with a blind intestine. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles New Zealand Pacific Southern Ocean European Journal of Taxonomy 726 59 82 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Blind intestine pseudocoelomocytes pore complexes continental slope Kaikōura Canyon Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Blind intestine pseudocoelomocytes pore complexes continental slope Kaikōura Canyon Zoology QL1-991 Botany QK1-989 Daniel Leduc New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
topic_facet |
Blind intestine pseudocoelomocytes pore complexes continental slope Kaikōura Canyon Zoology QL1-991 Botany QK1-989 |
description |
The Selachinematidae is a globally distributed family of predatory nematodes found from shallow waters to the abyssal plain. Here, three new species of Halichoanolaimus de Man, 1886 (H. ossilagulus sp. nov., H. funestus sp. nov. and H. pumilus sp. nov.) and one known species (H. ovalis Ditlevsen, 1921) are described from the New Zealand continental margin, thus bringing the total number of selachinematid species recorded from the New Zealand region to 14 and the total number of species of Halichoanolaimus to 26. The range of H. ovalis is extended from the Southern Ocean to the Southwest Pacific Ocean (latitude 42° S to 53° S); the depth range of this species, which was originally described from the littoral zone, is also extended to 1061 m depth. Dorsosublateral rows of pore complexes and pseudocoelomocytes, features that have either rarely or not been recorded previously in the genus, were observed in all four species described here. The taxonomic significance of these features remains to be ascertained for the family and will require observations of other species of Halichoanolaimus and selachinematid genera. Pseudocoelomocytes and pore complexes may have an excretory function, thus aiding to process the waste products of digestion in selachinematid taxa with a blind intestine. |
format |
Article in Journal/Newspaper |
author |
Daniel Leduc |
author_facet |
Daniel Leduc |
author_sort |
Daniel Leduc |
title |
New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
title_short |
New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
title_full |
New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
title_fullStr |
New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
title_full_unstemmed |
New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand’s continental margin |
title_sort |
new and known halichoanolaimus de man, 1886 species (nematoda: selachinematidae) from new zealand’s continental margin |
publisher |
Consortium of European Natural History Museums |
publishDate |
2020 |
url |
https://doi.org/10.5852/ejt.2020.726.1175 https://doaj.org/article/9c9332ded388436db82de28410be4841 |
geographic |
New Zealand Pacific Southern Ocean |
geographic_facet |
New Zealand Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
European Journal of Taxonomy, Vol 726, Iss 1 (2020) |
op_relation |
https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1175 https://doaj.org/toc/2118-9773 doi:10.5852/ejt.2020.726.1175 2118-9773 https://doaj.org/article/9c9332ded388436db82de28410be4841 |
op_doi |
https://doi.org/10.5852/ejt.2020.726.1175 |
container_title |
European Journal of Taxonomy |
container_volume |
726 |
container_start_page |
59 |
op_container_end_page |
82 |
_version_ |
1766207178855677952 |