Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America
Caecidae is a species-rich family of microsnails with a worldwide distribution. Typical for many groups of gastropods, caecid taxonomy is largely based on overt shell characters. However, identification of species using shell characteristics is problematic due to their rather uniform, tubular shells...
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ftpensoft:10.3897/zookeys.968.52986 2023-05-15T17:41:36+02:00 Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America Egger,Christina Neusser,Timea Norenburg,Jon Leasi,Francesca Buge,Barbara Vannozzi,Angelo Cunha,Regina Cox,Cymon Jörger,Katharina 2020 text/html https://doi.org/10.3897/zookeys.968.52986 https://zookeys.pensoft.net/article/52986/ 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 968: 1-42 DNA taxonomy marine biodiversity meiofauna molecular species delineation Mollusca Research Article 2020 ftpensoft https://doi.org/10.3897/zookeys.968.52986 2022-03-01T12:44:14Z Caecidae is a species-rich family of microsnails with a worldwide distribution. Typical for many groups of gastropods, caecid taxonomy is largely based on overt shell characters. However, identification of species using shell characteristics is problematic due to their rather uniform, tubular shells, the presence of different growth stages, and a high degree of intraspecific variability. In the present study, a first integrative approach to caecid taxonomy is provided using light-microscopic investigation with microsculptural analyses and multi-marker barcoding, in conjunction with molecular species delineation analyses (ABGD, haplotype networks, GMYC, and bPTP). In total 132 specimens of Caecum and Meioceras collected during several sampling trips to Central America were analyzed and delineated into a minimum of 19 species to discuss putative synonyms, and supplement the original descriptions. Molecular phylogenetic analyses suggest Meioceras nitidum and M. cubitatum should be reclassified as Caecum, and the genus Meioceras might present a junior synonym of Caecum. Meiofaunal caecids morphologically resembling C. glabrum from the Northeast Atlantic are a complex of cryptic species with independent evolutionary origins, likely associated with multiple habitat shifts to the mesopsammic environment. Caecum invisibile Egger & Jörger, sp. nov. is formally described based on molecular diagnostic characters. This first integrative approach towards the taxonomy of Caecidae increases the known diversity, reveals the need for a reclassification of the genus Caecum and serves as a starting point for a barcoding library of the family, thereby enabling further reliable identifications of these taxonomically challenging microsnails in future studies. Article in Journal/Newspaper Northeast Atlantic Pensoft Publishers ZooKeys 968 1 42 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
DNA taxonomy marine biodiversity meiofauna molecular species delineation Mollusca |
spellingShingle |
DNA taxonomy marine biodiversity meiofauna molecular species delineation Mollusca Egger,Christina Neusser,Timea Norenburg,Jon Leasi,Francesca Buge,Barbara Vannozzi,Angelo Cunha,Regina Cox,Cymon Jörger,Katharina Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
topic_facet |
DNA taxonomy marine biodiversity meiofauna molecular species delineation Mollusca |
description |
Caecidae is a species-rich family of microsnails with a worldwide distribution. Typical for many groups of gastropods, caecid taxonomy is largely based on overt shell characters. However, identification of species using shell characteristics is problematic due to their rather uniform, tubular shells, the presence of different growth stages, and a high degree of intraspecific variability. In the present study, a first integrative approach to caecid taxonomy is provided using light-microscopic investigation with microsculptural analyses and multi-marker barcoding, in conjunction with molecular species delineation analyses (ABGD, haplotype networks, GMYC, and bPTP). In total 132 specimens of Caecum and Meioceras collected during several sampling trips to Central America were analyzed and delineated into a minimum of 19 species to discuss putative synonyms, and supplement the original descriptions. Molecular phylogenetic analyses suggest Meioceras nitidum and M. cubitatum should be reclassified as Caecum, and the genus Meioceras might present a junior synonym of Caecum. Meiofaunal caecids morphologically resembling C. glabrum from the Northeast Atlantic are a complex of cryptic species with independent evolutionary origins, likely associated with multiple habitat shifts to the mesopsammic environment. Caecum invisibile Egger & Jörger, sp. nov. is formally described based on molecular diagnostic characters. This first integrative approach towards the taxonomy of Caecidae increases the known diversity, reveals the need for a reclassification of the genus Caecum and serves as a starting point for a barcoding library of the family, thereby enabling further reliable identifications of these taxonomically challenging microsnails in future studies. |
format |
Article in Journal/Newspaper |
author |
Egger,Christina Neusser,Timea Norenburg,Jon Leasi,Francesca Buge,Barbara Vannozzi,Angelo Cunha,Regina Cox,Cymon Jörger,Katharina |
author_facet |
Egger,Christina Neusser,Timea Norenburg,Jon Leasi,Francesca Buge,Barbara Vannozzi,Angelo Cunha,Regina Cox,Cymon Jörger,Katharina |
author_sort |
Egger,Christina |
title |
Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
title_short |
Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
title_full |
Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
title_fullStr |
Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
title_full_unstemmed |
Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America |
title_sort |
uncovering the shell game with barcodes: diversity of meiofaunal caecidae snails (truncatelloidea, caenogastropoda) from central america |
publisher |
Pensoft Publishers |
publishDate |
2020 |
url |
https://doi.org/10.3897/zookeys.968.52986 https://zookeys.pensoft.net/article/52986/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ZooKeys 968: 1-42 |
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.968.52986 |
container_title |
ZooKeys |
container_volume |
968 |
container_start_page |
1 |
op_container_end_page |
42 |
_version_ |
1766143251986776064 |