Marionina Michaelsen 1890
MARIONINA MICHAELSEN, 1890 Type species: Pachydrilus georgianus Michaelsen, 1888. In addition to the Lumbricillus specimens described above, we received six other enchytraeid specimens from the recent southern expeditions. Two of them were small, semi-mature and unpigmented individuals from Snow Isl...
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Online Access: | https://doi.org/10.5281/zenodo.6461127 http://treatment.plazi.org/id/039DC377FFA0FFC74C30FD28FDF5593D |
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ftzenodo:oai:zenodo.org:6461127 2024-09-09T20:08:11+00:00 Marionina Michaelsen 1890 Klinth, Mårten J. Rota, Emilia Martinsson, Svante Prantoni, Alessandro L. Erséus, Christer 2021-09-24 https://doi.org/10.5281/zenodo.6461127 http://treatment.plazi.org/id/039DC377FFA0FFC74C30FD28FDF5593D unknown Zenodo https://doi.org/10.1093/zoolinnean/zlab073 http://zenodo.org/record/6461085 http://publication.plazi.org/id/FFA4BB0FFFB0FFD44D21FFADFFFD5F1D https://sibils.text-analytics.ch/search/collections/plazi/039DC377FFA0FFC74C30FD28FDF5593D https://www.gbif.org/species/194598603 https://www.checklistbank.org/dataset/55979/taxon/039DC377FFA0FFC74C30FD28FDF5593D.taxon https://doi.org/10.5281/zenodo.6461109 http://table.plazi.org/id/DF4B22E9FFA2FFC64DB1FE4FFBD55EE5 http://zoobank.org/3FB3FBB8-4112-463A-ADEF-35CD427C8AF4 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6461126 https://doi.org/10.5281/zenodo.6461127 oai:zenodo.org:6461127 http://treatment.plazi.org/id/039DC377FFA0FFC74C30FD28FDF5593D info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode New insights into the systematics of Lumbricillus and Marionina (Clitellata: Enchytraeidae) inferred from Southern Hemisphere samples, including three new species, pp. 1103-1133 in Zoological Journal of the Linnean Society, 194(4), 1119-1122, (2021-09-24) Biodiversity Taxonomy Animalia Annelida Clitellata Enchytraeida Enchytraeidae Marionina info:eu-repo/semantics/other 2021 ftzenodo https://doi.org/10.5281/zenodo.646112710.1093/zoolinnean/zlab07310.5281/zenodo.646110910.5281/zenodo.6461126 2024-07-25T17:15:50Z MARIONINA MICHAELSEN, 1890 Type species: Pachydrilus georgianus Michaelsen, 1888. In addition to the Lumbricillus specimens described above, we received six other enchytraeid specimens from the recent southern expeditions. Two of them were small, semi-mature and unpigmented individuals from Snow Island, and four were large, mature worms with dark pigmentation from South Georgia. Although the six specimens differed greatly in appearance, the molecular data strongly supported them as a monophyletic group of three species. The two unpigmented specimens belonged to the same, but yet unidentified, species, whereas the four pigmented specimens (constituting two additional species) were all highly reminiscent of M. aestuum , a taxon placed in Lumbricillus by Nielsen & Christensen (1959), but here regarded as a member of Marionina s.s . As mentioned in the Introduction, Marionina s.l. has grown to become a large genus, with a wide definition allowing for the inclusion of many unrelated taxa. A formal revision of this genus is beyond the scope of our study, but we aim here to provide enough information to allow for such a revision in the near future. The definition of Marionina s.s. can only originate from the type species M. georgiana , which fortunately has been given two extensive redescriptions (Rota et al. , 2008; Schmelz & Collado, 2008). Marionina georgiana is marine and has the following characters: epidermis densely glandular; sigmoid chaetae, with upper bundles dorsolateral (closer to lateral line than the ventral bundles); ventral nerve cord with continuous, scattered occurrence of perikarya (and not concentrated in separate ganglia like that of Achaetinae; Rota et al. , 2008); brain with posterior incision; three pairs of pharyngeal glands; gradual transition between oesophagus and intestine; oesophageal appendages absent; dorsal vessel arising in XIII and bifurcating anteriorly at front of peristomium (= lumbricilline pattern); nephridia with anteseptale consisting of funnel only and nucleated ... Other/Unknown Material Snow Island Zenodo Christensen ENVELOPE(47.867,47.867,-67.967,-67.967) Snow Island ENVELOPE(-61.383,-61.383,-62.776,-62.776) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Clitellata Enchytraeida Enchytraeidae Marionina |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Clitellata Enchytraeida Enchytraeidae Marionina Klinth, Mårten J. Rota, Emilia Martinsson, Svante Prantoni, Alessandro L. Erséus, Christer Marionina Michaelsen 1890 |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Clitellata Enchytraeida Enchytraeidae Marionina |
description |
MARIONINA MICHAELSEN, 1890 Type species: Pachydrilus georgianus Michaelsen, 1888. In addition to the Lumbricillus specimens described above, we received six other enchytraeid specimens from the recent southern expeditions. Two of them were small, semi-mature and unpigmented individuals from Snow Island, and four were large, mature worms with dark pigmentation from South Georgia. Although the six specimens differed greatly in appearance, the molecular data strongly supported them as a monophyletic group of three species. The two unpigmented specimens belonged to the same, but yet unidentified, species, whereas the four pigmented specimens (constituting two additional species) were all highly reminiscent of M. aestuum , a taxon placed in Lumbricillus by Nielsen & Christensen (1959), but here regarded as a member of Marionina s.s . As mentioned in the Introduction, Marionina s.l. has grown to become a large genus, with a wide definition allowing for the inclusion of many unrelated taxa. A formal revision of this genus is beyond the scope of our study, but we aim here to provide enough information to allow for such a revision in the near future. The definition of Marionina s.s. can only originate from the type species M. georgiana , which fortunately has been given two extensive redescriptions (Rota et al. , 2008; Schmelz & Collado, 2008). Marionina georgiana is marine and has the following characters: epidermis densely glandular; sigmoid chaetae, with upper bundles dorsolateral (closer to lateral line than the ventral bundles); ventral nerve cord with continuous, scattered occurrence of perikarya (and not concentrated in separate ganglia like that of Achaetinae; Rota et al. , 2008); brain with posterior incision; three pairs of pharyngeal glands; gradual transition between oesophagus and intestine; oesophageal appendages absent; dorsal vessel arising in XIII and bifurcating anteriorly at front of peristomium (= lumbricilline pattern); nephridia with anteseptale consisting of funnel only and nucleated ... |
format |
Other/Unknown Material |
author |
Klinth, Mårten J. Rota, Emilia Martinsson, Svante Prantoni, Alessandro L. Erséus, Christer |
author_facet |
Klinth, Mårten J. Rota, Emilia Martinsson, Svante Prantoni, Alessandro L. Erséus, Christer |
author_sort |
Klinth, Mårten J. |
title |
Marionina Michaelsen 1890 |
title_short |
Marionina Michaelsen 1890 |
title_full |
Marionina Michaelsen 1890 |
title_fullStr |
Marionina Michaelsen 1890 |
title_full_unstemmed |
Marionina Michaelsen 1890 |
title_sort |
marionina michaelsen 1890 |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5281/zenodo.6461127 http://treatment.plazi.org/id/039DC377FFA0FFC74C30FD28FDF5593D |
long_lat |
ENVELOPE(47.867,47.867,-67.967,-67.967) ENVELOPE(-61.383,-61.383,-62.776,-62.776) |
geographic |
Christensen Snow Island |
geographic_facet |
Christensen Snow Island |
genre |
Snow Island |
genre_facet |
Snow Island |
op_source |
New insights into the systematics of Lumbricillus and Marionina (Clitellata: Enchytraeidae) inferred from Southern Hemisphere samples, including three new species, pp. 1103-1133 in Zoological Journal of the Linnean Society, 194(4), 1119-1122, (2021-09-24) |
op_relation |
https://doi.org/10.1093/zoolinnean/zlab073 http://zenodo.org/record/6461085 http://publication.plazi.org/id/FFA4BB0FFFB0FFD44D21FFADFFFD5F1D https://sibils.text-analytics.ch/search/collections/plazi/039DC377FFA0FFC74C30FD28FDF5593D https://www.gbif.org/species/194598603 https://www.checklistbank.org/dataset/55979/taxon/039DC377FFA0FFC74C30FD28FDF5593D.taxon https://doi.org/10.5281/zenodo.6461109 http://table.plazi.org/id/DF4B22E9FFA2FFC64DB1FE4FFBD55EE5 http://zoobank.org/3FB3FBB8-4112-463A-ADEF-35CD427C8AF4 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.6461126 https://doi.org/10.5281/zenodo.6461127 oai:zenodo.org:6461127 http://treatment.plazi.org/id/039DC377FFA0FFC74C30FD28FDF5593D |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.646112710.1093/zoolinnean/zlab07310.5281/zenodo.646110910.5281/zenodo.6461126 |
_version_ |
1809941852889022464 |