Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
We investigate morphology and taxonomic rank of several Alona species related to A. rectangula Sars, 1861. Despite high morphological intraspecific variability, a number of synapomorphies shows that taxa related to A. rectangula are sufficiently different in external and internal morphology from &qu...
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ftunivgent:oai:archive.ugent.be:700526 2023-06-11T04:07:04+02:00 Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) Van Damme, Kay Dumont, Henri 2008 application/pdf https://biblio.ugent.be/publication/700526 http://hdl.handle.net/1854/LU-700526 https://biblio.ugent.be/publication/700526/file/700532 eng eng https://biblio.ugent.be/publication/700526 http://hdl.handle.net/1854/LU-700526 https://biblio.ugent.be/publication/700526/file/700532 No license (in copyright) info:eu-repo/semantics/restrictedAccess Zootaxa ISSN: 1175-5326 Biology and Life Sciences Ovalona gen.n Chydoridae Alona weinecki Coronatella anemae n. sp Alona rectangula group Coronatella holdeni taxonomy limb morphology distribution journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2008 ftunivgent 2023-05-10T22:25:55Z We investigate morphology and taxonomic rank of several Alona species related to A. rectangula Sars, 1861. Despite high morphological intraspecific variability, a number of synapomorphies shows that taxa related to A. rectangula are sufficiently different in external and internal morphology from "true" Alona Baird, 1843. These are removed from Alona into separate genera. The rare West-African A. holdeni Green 1962 is redescribed and we describe a new species from North Africa, Arabia and islands in the Western Indian Ocean. We reinstate the name Coronatella Dybowski & Grochowski to receive A. rectangula, A. holdeni, and a new species, C. anemae. Sharing several synapomorphies, the sub-antarctic species A. weinecki Studer appears related to A. meridionalis Sinev, 2006. We assign them to Ovalona gen.n., similar in morphology to Coronatella, but with less limb reductions. At a higher level, we discuss morphology and distribution of both genera and of the similar A. elegans-group. To situate Coronatella within the subfamily, we introduce a "Coronatella-branch", a group of medium-sized Aloninae with limb reductions, comprising Coronatella, Leberis, Celsinotum, A. dentifera, A. monacantha and possibly Karualona and A. verrucosa-group, in comparison with a "Hexalona-branch" and Alona s.str. Adaptations to life in temporary pools and salinity tolerance may have played an important role in separation and radiation of a Coronatella-branch. Article in Journal/Newspaper Antarc* Antarctic Ghent University Academic Bibliography Antarctic Indian |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Ovalona gen.n Chydoridae Alona weinecki Coronatella anemae n. sp Alona rectangula group Coronatella holdeni taxonomy limb morphology distribution |
spellingShingle |
Biology and Life Sciences Ovalona gen.n Chydoridae Alona weinecki Coronatella anemae n. sp Alona rectangula group Coronatella holdeni taxonomy limb morphology distribution Van Damme, Kay Dumont, Henri Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
topic_facet |
Biology and Life Sciences Ovalona gen.n Chydoridae Alona weinecki Coronatella anemae n. sp Alona rectangula group Coronatella holdeni taxonomy limb morphology distribution |
description |
We investigate morphology and taxonomic rank of several Alona species related to A. rectangula Sars, 1861. Despite high morphological intraspecific variability, a number of synapomorphies shows that taxa related to A. rectangula are sufficiently different in external and internal morphology from "true" Alona Baird, 1843. These are removed from Alona into separate genera. The rare West-African A. holdeni Green 1962 is redescribed and we describe a new species from North Africa, Arabia and islands in the Western Indian Ocean. We reinstate the name Coronatella Dybowski & Grochowski to receive A. rectangula, A. holdeni, and a new species, C. anemae. Sharing several synapomorphies, the sub-antarctic species A. weinecki Studer appears related to A. meridionalis Sinev, 2006. We assign them to Ovalona gen.n., similar in morphology to Coronatella, but with less limb reductions. At a higher level, we discuss morphology and distribution of both genera and of the similar A. elegans-group. To situate Coronatella within the subfamily, we introduce a "Coronatella-branch", a group of medium-sized Aloninae with limb reductions, comprising Coronatella, Leberis, Celsinotum, A. dentifera, A. monacantha and possibly Karualona and A. verrucosa-group, in comparison with a "Hexalona-branch" and Alona s.str. Adaptations to life in temporary pools and salinity tolerance may have played an important role in separation and radiation of a Coronatella-branch. |
format |
Article in Journal/Newspaper |
author |
Van Damme, Kay Dumont, Henri |
author_facet |
Van Damme, Kay Dumont, Henri |
author_sort |
Van Damme, Kay |
title |
Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
title_short |
Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
title_full |
Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
title_fullStr |
Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
title_full_unstemmed |
Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera) |
title_sort |
further division of alona baird, 1843: separation and position of coronatella dybowski & grochowski and ovalona gen.n. (crustacea: cladocera) |
publishDate |
2008 |
url |
https://biblio.ugent.be/publication/700526 http://hdl.handle.net/1854/LU-700526 https://biblio.ugent.be/publication/700526/file/700532 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Zootaxa ISSN: 1175-5326 |
op_relation |
https://biblio.ugent.be/publication/700526 http://hdl.handle.net/1854/LU-700526 https://biblio.ugent.be/publication/700526/file/700532 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
_version_ |
1768379664403791872 |