Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position
The biodiversity of Cephalaspidea (Gastropoda: Heterobranchia) is poorly studied, and novel findings often lead to revisions at different taxonomic levels. The family Philinidae has a distinct set of defining characters in the shell, copulatory apparatus, and gizzard morphology, but several species,...
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ftmdpi:oai:mdpi.com:/1424-2818/15/3/395/ 2023-08-20T04:04:20+02:00 Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position Elena Chaban Irina Ekimova Pavel Lubin Ekaterina Nikitenko Dimitry Schepetov agris 2023-03-09 application/pdf https://doi.org/10.3390/d15030395 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/d15030395 https://creativecommons.org/licenses/by/4.0/ Diversity; Volume 15; Issue 3; Pages: 395 Philinidae Aglajidae Philinissima gen. nov. Gastropoda Heterobranchia morphology taxonomy ecology phylogeny Barents Sea White Sea Text 2023 ftmdpi https://doi.org/10.3390/d15030395 2023-08-01T09:11:30Z The biodiversity of Cephalaspidea (Gastropoda: Heterobranchia) is poorly studied, and novel findings often lead to revisions at different taxonomic levels. The family Philinidae has a distinct set of defining characters in the shell, copulatory apparatus, and gizzard morphology, but several species, considered part of the family, deviate from it significantly. Philine denticulata (J. Adams, 1800) was considered to be a Philinidae despite the species morphology not fitting well with the family diagnosis. This species has an oval cylindrical external shell, jaws, and a gizzard lined with a chitinous layer with three thickened ridges. We studied Philine denticulata morphology on samples from the White and Barents Seas using the light and scanning electron microscopy methods in addition to computer microtomography. We also reconstructed its phylogenetic position using COI, 16S, 28S, and H3 genetic markers. Our integrative analysis revealed close relationships of this species to the family Aglajidae. Thus, we describe a new genus Philinissima gen. nov., including a single species Philinissima denticulata (J. Adams, 1800) comb. nov. which is the first aglajid registered from the Arctic waters. Our findings highlight possible problems in the Aglajidae taxonomical composition and an overall need for a dedicated integrative revision of the Cephalaspidea. Text Arctic Barents Sea White Sea MDPI Open Access Publishing Arctic Barents Sea White Sea Diversity 15 3 395 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Philinidae Aglajidae Philinissima gen. nov. Gastropoda Heterobranchia morphology taxonomy ecology phylogeny Barents Sea White Sea |
spellingShingle |
Philinidae Aglajidae Philinissima gen. nov. Gastropoda Heterobranchia morphology taxonomy ecology phylogeny Barents Sea White Sea Elena Chaban Irina Ekimova Pavel Lubin Ekaterina Nikitenko Dimitry Schepetov Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
topic_facet |
Philinidae Aglajidae Philinissima gen. nov. Gastropoda Heterobranchia morphology taxonomy ecology phylogeny Barents Sea White Sea |
description |
The biodiversity of Cephalaspidea (Gastropoda: Heterobranchia) is poorly studied, and novel findings often lead to revisions at different taxonomic levels. The family Philinidae has a distinct set of defining characters in the shell, copulatory apparatus, and gizzard morphology, but several species, considered part of the family, deviate from it significantly. Philine denticulata (J. Adams, 1800) was considered to be a Philinidae despite the species morphology not fitting well with the family diagnosis. This species has an oval cylindrical external shell, jaws, and a gizzard lined with a chitinous layer with three thickened ridges. We studied Philine denticulata morphology on samples from the White and Barents Seas using the light and scanning electron microscopy methods in addition to computer microtomography. We also reconstructed its phylogenetic position using COI, 16S, 28S, and H3 genetic markers. Our integrative analysis revealed close relationships of this species to the family Aglajidae. Thus, we describe a new genus Philinissima gen. nov., including a single species Philinissima denticulata (J. Adams, 1800) comb. nov. which is the first aglajid registered from the Arctic waters. Our findings highlight possible problems in the Aglajidae taxonomical composition and an overall need for a dedicated integrative revision of the Cephalaspidea. |
format |
Text |
author |
Elena Chaban Irina Ekimova Pavel Lubin Ekaterina Nikitenko Dimitry Schepetov |
author_facet |
Elena Chaban Irina Ekimova Pavel Lubin Ekaterina Nikitenko Dimitry Schepetov |
author_sort |
Elena Chaban |
title |
Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
title_short |
Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
title_full |
Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
title_fullStr |
Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
title_full_unstemmed |
Bizarre Morphology Obscures Real Affiliation: An Integrative Study of Enigmatic Cephalaspid Philine denticulata from Arctic Waters Reveals Its Unique Phylogenetic Position |
title_sort |
bizarre morphology obscures real affiliation: an integrative study of enigmatic cephalaspid philine denticulata from arctic waters reveals its unique phylogenetic position |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/d15030395 |
op_coverage |
agris |
geographic |
Arctic Barents Sea White Sea |
geographic_facet |
Arctic Barents Sea White Sea |
genre |
Arctic Barents Sea White Sea |
genre_facet |
Arctic Barents Sea White Sea |
op_source |
Diversity; Volume 15; Issue 3; Pages: 395 |
op_relation |
https://dx.doi.org/10.3390/d15030395 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/d15030395 |
container_title |
Diversity |
container_volume |
15 |
container_issue |
3 |
container_start_page |
395 |
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1774714726186483712 |