New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida)
The taxonomic position of two antarctic dorylaimid species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. are discussed on the basis of morphological, including SEM study, morphometric, postembryonic and sequence data of 18S rDNA...
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ftpensoft:10.3897/zookeys.511.9793 2023-05-15T14:01:27+02:00 New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) Elshishka,Milka Lazarova,Stela Radoslavov,Georgi Hristov,Peter Peneva,Vlada 2015 text/html https://doi.org/10.3897/zookeys.511.9793 https://zookeys.pensoft.net/article/5553/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1313-2970 info:eu-repo/semantics/altIdentifier/pissn/1313-2989 info:eu-repo/semantics/openAccess ZooKeys 511: 25-68 18S rDNA D2-D3 28S rDNA morphology new geographic records nomenclature SEM taxonomy Research Article 2015 ftpensoft https://doi.org/10.3897/zookeys.511.9793 2022-03-01T12:30:53Z The taxonomic position of two antarctic dorylaimid species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. are discussed on the basis of morphological, including SEM study, morphometric, postembryonic and sequence data of 18S rDNA and the D2-D3 expansion fragments of large subunit rDNA. The evolutionary trees inferred from 18S sequences show insufficient resolution to determine the assignment of the two species to particular families, moreover P. paradoxus gen. n., comb. n. (=Rhyssocolpus paradoxus) previously regarded as a member of Nordiidae or Qudsianematidae, showed distant relationship both to Rhyssocolpus vinciguerrae and Eudorylaimus spp. The phylogram inferred from 28S sequences revealed that A. isokaryon is a member of a well-supported group comprised of several Aporcelaimellus spp., while, no close relationships could be revealed for the P. paradoxus gen. n., comb. n. to any nematode genus. On the basis of molecular data and morphological characteristics, some taxonomic changes are proposed. Amblydorylaimus isokaryon is transferred from family Qudsianematidae to family Aporcelaimidae, and a new monotypic genus Pararhyssocolpus gen. n. is proposed, attributed to Pararhyssocolpidae fam. n. The diagnosis of the new family is provided together with emended diagnosis of the genera Amblydorylaimus and Pararhyssocolpus gen. n. Data concerning distribution of these endemic genera in the Antarctic region are also given. Article in Journal/Newspaper Antarc* Antarctic Pensoft Publishers Antarctic The Antarctic ZooKeys 511 25 68 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
18S rDNA D2-D3 28S rDNA morphology new geographic records nomenclature SEM taxonomy |
spellingShingle |
18S rDNA D2-D3 28S rDNA morphology new geographic records nomenclature SEM taxonomy Elshishka,Milka Lazarova,Stela Radoslavov,Georgi Hristov,Peter Peneva,Vlada New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
topic_facet |
18S rDNA D2-D3 28S rDNA morphology new geographic records nomenclature SEM taxonomy |
description |
The taxonomic position of two antarctic dorylaimid species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. are discussed on the basis of morphological, including SEM study, morphometric, postembryonic and sequence data of 18S rDNA and the D2-D3 expansion fragments of large subunit rDNA. The evolutionary trees inferred from 18S sequences show insufficient resolution to determine the assignment of the two species to particular families, moreover P. paradoxus gen. n., comb. n. (=Rhyssocolpus paradoxus) previously regarded as a member of Nordiidae or Qudsianematidae, showed distant relationship both to Rhyssocolpus vinciguerrae and Eudorylaimus spp. The phylogram inferred from 28S sequences revealed that A. isokaryon is a member of a well-supported group comprised of several Aporcelaimellus spp., while, no close relationships could be revealed for the P. paradoxus gen. n., comb. n. to any nematode genus. On the basis of molecular data and morphological characteristics, some taxonomic changes are proposed. Amblydorylaimus isokaryon is transferred from family Qudsianematidae to family Aporcelaimidae, and a new monotypic genus Pararhyssocolpus gen. n. is proposed, attributed to Pararhyssocolpidae fam. n. The diagnosis of the new family is provided together with emended diagnosis of the genera Amblydorylaimus and Pararhyssocolpus gen. n. Data concerning distribution of these endemic genera in the Antarctic region are also given. |
format |
Article in Journal/Newspaper |
author |
Elshishka,Milka Lazarova,Stela Radoslavov,Georgi Hristov,Peter Peneva,Vlada |
author_facet |
Elshishka,Milka Lazarova,Stela Radoslavov,Georgi Hristov,Peter Peneva,Vlada |
author_sort |
Elshishka,Milka |
title |
New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
title_short |
New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
title_full |
New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
title_fullStr |
New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
title_full_unstemmed |
New data on two remarkable Antarctic species Amblydorylaimus isokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpus paradoxus (Loof, 1975), gen. n., comb. n. (Nematoda, Dorylaimida) |
title_sort |
new data on two remarkable antarctic species amblydorylaimus isokaryon (loof, 1975) andrássy, 1998 and pararhyssocolpus paradoxus (loof, 1975), gen. n., comb. n. (nematoda, dorylaimida) |
publisher |
Pensoft Publishers |
publishDate |
2015 |
url |
https://doi.org/10.3897/zookeys.511.9793 https://zookeys.pensoft.net/article/5553/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ZooKeys 511: 25-68 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1313-2970 info:eu-repo/semantics/altIdentifier/pissn/1313-2989 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/zookeys.511.9793 |
container_title |
ZooKeys |
container_volume |
511 |
container_start_page |
25 |
op_container_end_page |
68 |
_version_ |
1766271288402247680 |