Opercularella lacerata

Opercularella lacerata (Johnston, 1847) Fig. 23 Campanularia lacerata Johnston, 1847: 111, pl. 28, fig. 3. Opercularella lacerata .— Segerstedt, 1889: 14, 25.— Lönnberg, 1898: 52.— Jäderholm, 1909: 81, pl. 7, fig. 13. Campanulina lacerata .— Jägerskiöld, 1971: 61. Type locality. UK: Berwick Bay; St....

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Main Author: Calder, Dale R.
Format: Other/Unknown Material
Language:unknown
Published: Zenodo 2012
Subjects:
Online Access:https://doi.org/10.5281/zenodo.5248522
http://treatment.plazi.org/id/03C8247ED014FF9BFF62F8AAFF7B2CFB
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author Calder, Dale R.
author_facet Calder, Dale R.
author_sort Calder, Dale R.
collection Zenodo
description Opercularella lacerata (Johnston, 1847) Fig. 23 Campanularia lacerata Johnston, 1847: 111, pl. 28, fig. 3. Opercularella lacerata .— Segerstedt, 1889: 14, 25.— Lönnberg, 1898: 52.— Jäderholm, 1909: 81, pl. 7, fig. 13. Campanulina lacerata .— Jägerskiöld, 1971: 61. Type locality. UK: Berwick Bay; St. Andrews (Johnston 1847: 111). Museum material. Tjärnö, floating dock at Sven Lovén Centre for Marine Sciences, 58°52’33.68”N, 11°08’43.65”E, <1 m, 07.ix.2010, collected manually, on a fucoid alga, one colony, up to 3.5 mm high, without gonophores, ROMIZ B3890. Remarks. Opercularella lacerata (Johnston, 1847) is frequent on floating docks just beneath the surface of the water on both sides of the boreal North Atlantic (personal observations), and it was found in that environment at Tjärnö. It is a euryhaline species, extending deep into the Baltic Sea (Cornelius 1995a). The boreal Opercularella pumila Clark, 1875 is somewhat similar, but its colonies are at least partly stolonal. Erect colonies of that species are more compact than those of O. lacerata and seldom have more than a half-dozen hydranths and hydrothecae per stem. Although gonophores are fixed sporosacs in both, gonothecae of O. lacerata are oval to subcylindrical while those of O. pumila are fusiform with a tapered neck (Clark 1875; Calder 1971). Also similar is Phialella quadrata (Forbes, 1848), but it differs from O. lacerata in having a medusa stage rather than fixed sporosacs. Schuchert (2001b) noted that trophosomes of O. lacerata can be distinguished from P. quadrata in having: (1) larger hydrothecae (0.3–0.5 mm vs. 0.25 mm), and (2) pedicels that are usually shorter (with five rings or less) instead of as long or longer (with more than five rings) than the hydrothecae. Other characters useful in distinguishing the two were presented by Cornelius (1995a: 176). The hydroid of Phialella quadrata has not yet been reported from southwestern Scandinavia; the report by Cornelius (1995a) that Kramp (1935b) and Rees & Rowe (1969) had recorded it from ...
format Other/Unknown Material
genre North Atlantic
genre_facet North Atlantic
geographic Forbes
Medusa
Rowe
Sven
geographic_facet Forbes
Medusa
Rowe
Sven
id ftzenodo:oai:zenodo.org:5248522
institution Open Polar
language unknown
long_lat ENVELOPE(-66.550,-66.550,-67.783,-67.783)
ENVELOPE(157.417,157.417,-79.633,-79.633)
ENVELOPE(-60.904,-60.904,-62.592,-62.592)
ENVELOPE(-60.200,-60.200,-63.733,-63.733)
op_collection_id ftzenodo
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op_relation https://doi.org/10.11646/zootaxa.3171.1.1
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https://sibils.text-analytics.ch/search/collections/plazi/03C8247ED014FF9BFF62F8AAFF7B2CFB
https://doi.org/10.5281/zenodo.5247750
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http://treatment.plazi.org/id/03C8247ED014FF9BFF62F8AAFF7B2CFB
op_rights info:eu-repo/semantics/openAccess
Creative Commons Zero v1.0 Universal
https://creativecommons.org/publicdomain/zero/1.0/legalcode
op_source On a collection of hydroids (Cnidaria, Hydrozoa, Hydroidolina) from the west coast of Sweden, with a checklist of species from the region 3171, pp. 1-77 in Zootaxa, 3171(1), 23-24, (2012-01-24)
publishDate 2012
publisher Zenodo
record_format openpolar
spelling ftzenodo:oai:zenodo.org:5248522 2025-01-16T23:44:24+00:00 Opercularella lacerata Calder, Dale R. 2012-01-24 https://doi.org/10.5281/zenodo.5248522 http://treatment.plazi.org/id/03C8247ED014FF9BFF62F8AAFF7B2CFB unknown Zenodo https://doi.org/10.11646/zootaxa.3171.1.1 http://zenodo.org/record/5247704 http://publication.plazi.org/id/FFF15C06D002FF8CFFF5FFADFF902B0F https://sibils.text-analytics.ch/search/collections/plazi/03C8247ED014FF9BFF62F8AAFF7B2CFB https://doi.org/10.5281/zenodo.5247750 https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5248521 https://doi.org/10.5281/zenodo.5248522 oai:zenodo.org:5248522 http://treatment.plazi.org/id/03C8247ED014FF9BFF62F8AAFF7B2CFB info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode On a collection of hydroids (Cnidaria, Hydrozoa, Hydroidolina) from the west coast of Sweden, with a checklist of species from the region 3171, pp. 1-77 in Zootaxa, 3171(1), 23-24, (2012-01-24) Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Campanulinidae Opercularella Opercularella lacerata info:eu-repo/semantics/other 2012 ftzenodo https://doi.org/10.5281/zenodo.524852210.11646/zootaxa.3171.1.110.5281/zenodo.524775010.5281/zenodo.5248521 2024-07-25T11:26:16Z Opercularella lacerata (Johnston, 1847) Fig. 23 Campanularia lacerata Johnston, 1847: 111, pl. 28, fig. 3. Opercularella lacerata .— Segerstedt, 1889: 14, 25.— Lönnberg, 1898: 52.— Jäderholm, 1909: 81, pl. 7, fig. 13. Campanulina lacerata .— Jägerskiöld, 1971: 61. Type locality. UK: Berwick Bay; St. Andrews (Johnston 1847: 111). Museum material. Tjärnö, floating dock at Sven Lovén Centre for Marine Sciences, 58°52’33.68”N, 11°08’43.65”E, <1 m, 07.ix.2010, collected manually, on a fucoid alga, one colony, up to 3.5 mm high, without gonophores, ROMIZ B3890. Remarks. Opercularella lacerata (Johnston, 1847) is frequent on floating docks just beneath the surface of the water on both sides of the boreal North Atlantic (personal observations), and it was found in that environment at Tjärnö. It is a euryhaline species, extending deep into the Baltic Sea (Cornelius 1995a). The boreal Opercularella pumila Clark, 1875 is somewhat similar, but its colonies are at least partly stolonal. Erect colonies of that species are more compact than those of O. lacerata and seldom have more than a half-dozen hydranths and hydrothecae per stem. Although gonophores are fixed sporosacs in both, gonothecae of O. lacerata are oval to subcylindrical while those of O. pumila are fusiform with a tapered neck (Clark 1875; Calder 1971). Also similar is Phialella quadrata (Forbes, 1848), but it differs from O. lacerata in having a medusa stage rather than fixed sporosacs. Schuchert (2001b) noted that trophosomes of O. lacerata can be distinguished from P. quadrata in having: (1) larger hydrothecae (0.3–0.5 mm vs. 0.25 mm), and (2) pedicels that are usually shorter (with five rings or less) instead of as long or longer (with more than five rings) than the hydrothecae. Other characters useful in distinguishing the two were presented by Cornelius (1995a: 176). The hydroid of Phialella quadrata has not yet been reported from southwestern Scandinavia; the report by Cornelius (1995a) that Kramp (1935b) and Rees & Rowe (1969) had recorded it from ... Other/Unknown Material North Atlantic Zenodo Forbes ENVELOPE(-66.550,-66.550,-67.783,-67.783) Medusa ENVELOPE(157.417,157.417,-79.633,-79.633) Rowe ENVELOPE(-60.904,-60.904,-62.592,-62.592) Sven ENVELOPE(-60.200,-60.200,-63.733,-63.733)
spellingShingle Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulinidae
Opercularella
Opercularella lacerata
Calder, Dale R.
Opercularella lacerata
title Opercularella lacerata
title_full Opercularella lacerata
title_fullStr Opercularella lacerata
title_full_unstemmed Opercularella lacerata
title_short Opercularella lacerata
title_sort opercularella lacerata
topic Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulinidae
Opercularella
Opercularella lacerata
topic_facet Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulinidae
Opercularella
Opercularella lacerata
url https://doi.org/10.5281/zenodo.5248522
http://treatment.plazi.org/id/03C8247ED014FF9BFF62F8AAFF7B2CFB