Obelia geniculata

Obelia geniculata (Linnaeus, 1758) Fig. 16e Sertularia geniculata Linnaeus, 1758: 812. Type locality. UK: Dover. According to Cornelius (1975), Linnaeus (1758) is likely to have established this species based on an illustration of material from Dover, England, by Ellis (1755). Voucher material. Off...

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Main Author: Calder, Dale R.
Format: Other/Unknown Material
Language:unknown
Published: Zenodo 2013
Subjects:
Online Access:https://doi.org/10.5281/zenodo.5263512
http://treatment.plazi.org/id/039B197EFFE7F57DE6F9F9ECFB4F168D
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author Calder, Dale R.
author_facet Calder, Dale R.
author_sort Calder, Dale R.
collection Zenodo
description Obelia geniculata (Linnaeus, 1758) Fig. 16e Sertularia geniculata Linnaeus, 1758: 812. Type locality. UK: Dover. According to Cornelius (1975), Linnaeus (1758) is likely to have established this species based on an illustration of material from Dover, England, by Ellis (1755). Voucher material. Off Fort Pierce, between Capron Shoal and the beach, on Thyroscyphus ramosus , 09.v.1974, SCUBA, two colonies, up to 7 mm high, with one empty gonotheca, coll. D. Biggs and D. Mook, ROMIZ B1073.— Hutchinson Island, Walton Rocks area, 27°20’19”N, 80°13’59”W, on algae, 17.ii.1991, collected manually, one colony, up to 5 mm high, with gonophores, coll. D.R. Calder, ROMIZ B1107.— Fort Pierce Inlet, north jetty, north side, 27°28’24.2”N, 80°17’20.3”W, on Thyroscyphus ramosus , 0.1 m, 15.ii.1991, 20° C, collected manually, two colonies, up to 8 mm high, with gonophores, coll. D.R. Calder, ROMIZ B1115.— Sebastian Inlet, 27°51’43”N, 80°26’47”W, washed ashore on Sargassum , 19.ii.1991, collected manually, one colony, up to 5 mm high, without gonophores, coll. D.R. Calder, ROMIZ B1119. Remarks. While often thought to be virtually cosmopolitan in shallow waters, molecular studies (Govindarajan et al . 2005) suggest the existence of cryptic species in hydroids of the Obelia geniculata (Linnaeus, 1758) morphotype. Moreover, the reported latitudinal distribution of O. geniculata , from the subarctic to the tropics, also appears to be exceptionally wide for a single species. Within that geographic range, local morphological variants have been noted. In one example, populations from Chesapeake Bay lack the usual asymmetrical development of perisarc on internodes of the hydrocaulus (Calder 1971), considered characteristic of the species (Cornelius 1995b). Hydroids from Florida examined here had the typical asymmetric thickening of perisarc on stem internodes beneath the distal hydrotheca on each, but colonies appeared to be stunted compared with those from boreal waters of the western and eastern North Atlantic (Calder 1975, 2012). ...
format Other/Unknown Material
genre Hutchinson Island
North Atlantic
Subarctic
genre_facet Hutchinson Island
North Atlantic
Subarctic
geographic Dover
geographic_facet Dover
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institution Open Polar
language unknown
long_lat ENVELOPE(-55.753,-55.753,-83.777,-83.777)
op_collection_id ftzenodo
op_relation https://doi.org/10.11646/zootaxa.3648.1.1
http://zenodo.org/record/5264362
http://publication.plazi.org/id/FFA26106FFDFF544E66EFFC3FF991441
https://sibils.text-analytics.ch/search/collections/plazi/039B197EFFE7F57DE6F9F9ECFB4F168D
https://doi.org/10.5281/zenodo.5264418
https://doi.org/10.5281/zenodo.3917040
http://treatment.plazi.org/id/5736451548BE4F3F5F364A580358B79F
http://zoobank.org/22089255-436A-4DBB-BD93-1D3C8CF281FE
https://zenodo.org/communities/biosyslit
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https://doi.org/10.5281/zenodo.5263512
oai:zenodo.org:5263512
http://treatment.plazi.org/id/039B197EFFE7F57DE6F9F9ECFB4F168D
op_rights info:eu-repo/semantics/openAccess
Creative Commons Zero v1.0 Universal
https://creativecommons.org/publicdomain/zero/1.0/legalcode
op_source Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA, pp. 1-72 in Zootaxa, 3648(1), 57-58, (2013-05-14)
publishDate 2013
publisher Zenodo
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spelling ftzenodo:oai:zenodo.org:5263512 2025-01-16T22:20:47+00:00 Obelia geniculata Calder, Dale R. 2013-05-14 https://doi.org/10.5281/zenodo.5263512 http://treatment.plazi.org/id/039B197EFFE7F57DE6F9F9ECFB4F168D unknown Zenodo https://doi.org/10.11646/zootaxa.3648.1.1 http://zenodo.org/record/5264362 http://publication.plazi.org/id/FFA26106FFDFF544E66EFFC3FF991441 https://sibils.text-analytics.ch/search/collections/plazi/039B197EFFE7F57DE6F9F9ECFB4F168D https://doi.org/10.5281/zenodo.5264418 https://doi.org/10.5281/zenodo.3917040 http://treatment.plazi.org/id/5736451548BE4F3F5F364A580358B79F http://zoobank.org/22089255-436A-4DBB-BD93-1D3C8CF281FE https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5263511 https://doi.org/10.5281/zenodo.5263512 oai:zenodo.org:5263512 http://treatment.plazi.org/id/039B197EFFE7F57DE6F9F9ECFB4F168D info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA, pp. 1-72 in Zootaxa, 3648(1), 57-58, (2013-05-14) Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Campanulariidae Obelia Obelia geniculata info:eu-repo/semantics/other 2013 ftzenodo 2024-12-05T03:16:56Z Obelia geniculata (Linnaeus, 1758) Fig. 16e Sertularia geniculata Linnaeus, 1758: 812. Type locality. UK: Dover. According to Cornelius (1975), Linnaeus (1758) is likely to have established this species based on an illustration of material from Dover, England, by Ellis (1755). Voucher material. Off Fort Pierce, between Capron Shoal and the beach, on Thyroscyphus ramosus , 09.v.1974, SCUBA, two colonies, up to 7 mm high, with one empty gonotheca, coll. D. Biggs and D. Mook, ROMIZ B1073.— Hutchinson Island, Walton Rocks area, 27°20’19”N, 80°13’59”W, on algae, 17.ii.1991, collected manually, one colony, up to 5 mm high, with gonophores, coll. D.R. Calder, ROMIZ B1107.— Fort Pierce Inlet, north jetty, north side, 27°28’24.2”N, 80°17’20.3”W, on Thyroscyphus ramosus , 0.1 m, 15.ii.1991, 20° C, collected manually, two colonies, up to 8 mm high, with gonophores, coll. D.R. Calder, ROMIZ B1115.— Sebastian Inlet, 27°51’43”N, 80°26’47”W, washed ashore on Sargassum , 19.ii.1991, collected manually, one colony, up to 5 mm high, without gonophores, coll. D.R. Calder, ROMIZ B1119. Remarks. While often thought to be virtually cosmopolitan in shallow waters, molecular studies (Govindarajan et al . 2005) suggest the existence of cryptic species in hydroids of the Obelia geniculata (Linnaeus, 1758) morphotype. Moreover, the reported latitudinal distribution of O. geniculata , from the subarctic to the tropics, also appears to be exceptionally wide for a single species. Within that geographic range, local morphological variants have been noted. In one example, populations from Chesapeake Bay lack the usual asymmetrical development of perisarc on internodes of the hydrocaulus (Calder 1971), considered characteristic of the species (Cornelius 1995b). Hydroids from Florida examined here had the typical asymmetric thickening of perisarc on stem internodes beneath the distal hydrotheca on each, but colonies appeared to be stunted compared with those from boreal waters of the western and eastern North Atlantic (Calder 1975, 2012). ... Other/Unknown Material Hutchinson Island North Atlantic Subarctic Zenodo Dover ENVELOPE(-55.753,-55.753,-83.777,-83.777)
spellingShingle Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulariidae
Obelia
Obelia geniculata
Calder, Dale R.
Obelia geniculata
title Obelia geniculata
title_full Obelia geniculata
title_fullStr Obelia geniculata
title_full_unstemmed Obelia geniculata
title_short Obelia geniculata
title_sort obelia geniculata
topic Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulariidae
Obelia
Obelia geniculata
topic_facet Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulariidae
Obelia
Obelia geniculata
url https://doi.org/10.5281/zenodo.5263512
http://treatment.plazi.org/id/039B197EFFE7F57DE6F9F9ECFB4F168D