Paracanthobdella livanowi
Species: Paracanthobdella livanowi (Epstein, 1966) NOTES ON OUR TAXONOMIC SCHEME Here, we present a taxonomic scheme for hookfaced fish worms (Acanthobdellida). Despite its historical significance, we do not retain the family Paracanthobdellidae for P. livanowi, because both morphological and molecu...
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ftzenodo:oai:zenodo.org:7044002 2023-06-06T11:48:31+02:00 Paracanthobdella livanowi Carle, Danielle Božena De Gajda, Łukasz Bielecki, Aleksander Cios, Stanisław Cichocka, Joanna M. Golden, Heidi E. Gryska, Andrew D. Sokolov, Sergey Shedko, Marina Borisowna Knudsen, Rune Utevsky, Serge Świątek, Piotr Tessler, Michael 2022-09-03 https://zenodo.org/record/7044002 https://doi.org/10.5281/zenodo.7044002 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03835D2CFFDDFFDFD5B8DD9015A13D5A doi:10.1093/zoolinnean/zlac006 http://zenodo.org/record/7037718 http://publication.plazi.org/id/FFBA2554FFD1FFD1D529D948110D3A34 http://table.plazi.org/id/DF55BCB2FFD2FFD2D58AD98C10933AC3 http://zoobank.org/A02EF0F4-008F-4974-9C87-9D738CD1B6E8 doi:10.5281/zenodo.7044001 https://zenodo.org/communities/biosyslit https://zenodo.org/record/7044002 https://doi.org/10.5281/zenodo.7044002 oai:zenodo.org:7044002 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Recent evolution of ancient Arctic leech relatives: systematics of Acanthobdellida, pp. 149-168 in Zoological Journal of the Linnean Society 196 161-162 Biodiversity Taxonomy Animalia Annelida Acanthobdellida Acanthobdellidae Paracanthobdella Paracanthobdella livanowi info:eu-repo/semantics/other publication-taxonomictreatment 2022 ftzenodo https://doi.org/10.5281/zenodo.704400210.1093/zoolinnean/zlac00610.5281/zenodo.7044001 2023-04-13T23:09:27Z Species: Paracanthobdella livanowi (Epstein, 1966) NOTES ON OUR TAXONOMIC SCHEME Here, we present a taxonomic scheme for hookfaced fish worms (Acanthobdellida). Despite its historical significance, we do not retain the family Paracanthobdellidae for P. livanowi, because both morphological and molecular analyses suggest that the two acanthobdellidan species share many characteristics. Initially, Acanthobdellidae and Paracanthobdellidae were differentiated based on a few morphological differences that were viewed as taxonomically important (Epstein, 1987). Specifically, members of Paracanthobdellidae were said to possess a primitive prostomium and well-developed anterior sucker. Although the two-family system seemed well supported at the time, we have found that the prostomium of P. livanowi is not more conspicuous or developed than the anterior region of A. peledina. Moreover, the area between rows of chaetae in the cephalic extremity of the latter can be deepened such that it resembles a shallow sucker. It should also be noted that juvenile individuals of P. livanowi do not bear well-developed anterior suckers; this character is only common to large-bodied individuals of the species. The sum of this evidence suggests that the morphological differences between the two acanthobdellidan species, although pronounced, are not sufficient to warrant two families. We therefore classify both Acanthobdella and Paracanthobdella under the single family Acanthobdellidae. We establish a new suborder Acanthobdelliformes to match better the taxonomy erected for Hirudinea in prior work (Tessler et al., 2018a), which divided Hirudinida (leeches) into five suborders (Americobdelliformes, Erpobdelliformes, Hirudiniformes, Glossiphoniiformes and Oceanobdelliformes). Acanthobdelliformes is defined by the presence of chaetae on each of five contiguous segments in the anterior body region, and 31 segments (mid-body ones are quadrannulate with annulus a3 being subdivided) (Sawyer, 1986; Purschke et al., 1993; Bielecki et al., 2014). ... Other/Unknown Material Arctic Zenodo |
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Open Polar |
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Zenodo |
op_collection_id |
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unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Acanthobdellida Acanthobdellidae Paracanthobdella Paracanthobdella livanowi |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Acanthobdellida Acanthobdellidae Paracanthobdella Paracanthobdella livanowi Carle, Danielle Božena De Gajda, Łukasz Bielecki, Aleksander Cios, Stanisław Cichocka, Joanna M. Golden, Heidi E. Gryska, Andrew D. Sokolov, Sergey Shedko, Marina Borisowna Knudsen, Rune Utevsky, Serge Świątek, Piotr Tessler, Michael Paracanthobdella livanowi |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Acanthobdellida Acanthobdellidae Paracanthobdella Paracanthobdella livanowi |
description |
Species: Paracanthobdella livanowi (Epstein, 1966) NOTES ON OUR TAXONOMIC SCHEME Here, we present a taxonomic scheme for hookfaced fish worms (Acanthobdellida). Despite its historical significance, we do not retain the family Paracanthobdellidae for P. livanowi, because both morphological and molecular analyses suggest that the two acanthobdellidan species share many characteristics. Initially, Acanthobdellidae and Paracanthobdellidae were differentiated based on a few morphological differences that were viewed as taxonomically important (Epstein, 1987). Specifically, members of Paracanthobdellidae were said to possess a primitive prostomium and well-developed anterior sucker. Although the two-family system seemed well supported at the time, we have found that the prostomium of P. livanowi is not more conspicuous or developed than the anterior region of A. peledina. Moreover, the area between rows of chaetae in the cephalic extremity of the latter can be deepened such that it resembles a shallow sucker. It should also be noted that juvenile individuals of P. livanowi do not bear well-developed anterior suckers; this character is only common to large-bodied individuals of the species. The sum of this evidence suggests that the morphological differences between the two acanthobdellidan species, although pronounced, are not sufficient to warrant two families. We therefore classify both Acanthobdella and Paracanthobdella under the single family Acanthobdellidae. We establish a new suborder Acanthobdelliformes to match better the taxonomy erected for Hirudinea in prior work (Tessler et al., 2018a), which divided Hirudinida (leeches) into five suborders (Americobdelliformes, Erpobdelliformes, Hirudiniformes, Glossiphoniiformes and Oceanobdelliformes). Acanthobdelliformes is defined by the presence of chaetae on each of five contiguous segments in the anterior body region, and 31 segments (mid-body ones are quadrannulate with annulus a3 being subdivided) (Sawyer, 1986; Purschke et al., 1993; Bielecki et al., 2014). ... |
format |
Other/Unknown Material |
author |
Carle, Danielle Božena De Gajda, Łukasz Bielecki, Aleksander Cios, Stanisław Cichocka, Joanna M. Golden, Heidi E. Gryska, Andrew D. Sokolov, Sergey Shedko, Marina Borisowna Knudsen, Rune Utevsky, Serge Świątek, Piotr Tessler, Michael |
author_facet |
Carle, Danielle Božena De Gajda, Łukasz Bielecki, Aleksander Cios, Stanisław Cichocka, Joanna M. Golden, Heidi E. Gryska, Andrew D. Sokolov, Sergey Shedko, Marina Borisowna Knudsen, Rune Utevsky, Serge Świątek, Piotr Tessler, Michael |
author_sort |
Carle, Danielle Božena De |
title |
Paracanthobdella livanowi |
title_short |
Paracanthobdella livanowi |
title_full |
Paracanthobdella livanowi |
title_fullStr |
Paracanthobdella livanowi |
title_full_unstemmed |
Paracanthobdella livanowi |
title_sort |
paracanthobdella livanowi |
publishDate |
2022 |
url |
https://zenodo.org/record/7044002 https://doi.org/10.5281/zenodo.7044002 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Recent evolution of ancient Arctic leech relatives: systematics of Acanthobdellida, pp. 149-168 in Zoological Journal of the Linnean Society 196 161-162 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03835D2CFFDDFFDFD5B8DD9015A13D5A doi:10.1093/zoolinnean/zlac006 http://zenodo.org/record/7037718 http://publication.plazi.org/id/FFBA2554FFD1FFD1D529D948110D3A34 http://table.plazi.org/id/DF55BCB2FFD2FFD2D58AD98C10933AC3 http://zoobank.org/A02EF0F4-008F-4974-9C87-9D738CD1B6E8 doi:10.5281/zenodo.7044001 https://zenodo.org/communities/biosyslit https://zenodo.org/record/7044002 https://doi.org/10.5281/zenodo.7044002 oai:zenodo.org:7044002 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.704400210.1093/zoolinnean/zlac00610.5281/zenodo.7044001 |
_version_ |
1767954240314015744 |