Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia
Stauromedusae are cnidarians that have attracted relatively little ecological study, especially in the southern hemisphere. They are Scyphozoa that develop directly from the scyphistoma, and each consists of a calyx and a more or less distinct aboral peduncle that attaches to the substratum by an ad...
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1998
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Online Access: | http://dx.doi.org/10.1017/s0025315400041709 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041709 |
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crcambridgeupr:10.1017/s0025315400041709 2024-06-23T07:47:35+00:00 Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia Davenport, John 1998 http://dx.doi.org/10.1017/s0025315400041709 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041709 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 78, issue 2, page 663-664 ISSN 0025-3154 1469-7769 journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0025315400041709 2024-05-29T08:08:34Z Stauromedusae are cnidarians that have attracted relatively little ecological study, especially in the southern hemisphere. They are Scyphozoa that develop directly from the scyphistoma, and each consists of a calyx and a more or less distinct aboral peduncle that attaches to the substratum by an adhesive disc. The animals are mobile on the substratum, but have no pelagic phase. The present note originates from observations made on stauromedusae living in intertidal and shallow subtidal waters at Husvik Harbour, South Georgia (54°11′S 38°40′W) in early 1994. The species concerned was identified from Kramp (1961), Carlgren (1930) and Pfeffer (1889) as Haliclystus antarcticus Pfeffer, 1889. This species has attracted little previous study. The most detailed anatomical description was given by Carlgen (1930), while distributional details are given in O'Sullivan (1982) who followed Pfeffer (1889); at present there is no evidence that the species occurs other than at South Georgia. Medusae were found on two substrata. Large animals (~30mm high, inconspicuous dark brown in colour) were found on the underside of boulders at extreme low spring tide level in a bay on the north of Husvik Harbour about 1·2 km from the whaling station and close to Brain Island. Locally they were common, often being close enough to touch one another. Smaller animals (pink-orange in colour; cryptic on the macroalga) were found attached to the brown macroalga Desmarestia menziesii J. Aghardh (Phaeophyceae) collected at low-water spring tide level from Kanin Point on the southern shore of the harbour. Medusae on boulders were briefly emersed on particularly low tides: they collapsed, hanging from the peduncle, when out of water, but did not risk desiccation as their habitat was wet and not exposed to the sun. Article in Journal/Newspaper Antarc* antarcticus Brain Island Cambridge University Press Brain Island ENVELOPE(-36.700,-36.700,-54.167,-54.167) Husvik Harbour ENVELOPE(-36.667,-36.667,-54.167,-54.167) Kanin Point ENVELOPE(-36.700,-36.700,-54.183,-54.183) O'Sullivan ENVELOPE(-62.152,-62.152,-71.433,-71.433) Journal of the Marine Biological Association of the United Kingdom 78 2 663 664 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Stauromedusae are cnidarians that have attracted relatively little ecological study, especially in the southern hemisphere. They are Scyphozoa that develop directly from the scyphistoma, and each consists of a calyx and a more or less distinct aboral peduncle that attaches to the substratum by an adhesive disc. The animals are mobile on the substratum, but have no pelagic phase. The present note originates from observations made on stauromedusae living in intertidal and shallow subtidal waters at Husvik Harbour, South Georgia (54°11′S 38°40′W) in early 1994. The species concerned was identified from Kramp (1961), Carlgren (1930) and Pfeffer (1889) as Haliclystus antarcticus Pfeffer, 1889. This species has attracted little previous study. The most detailed anatomical description was given by Carlgen (1930), while distributional details are given in O'Sullivan (1982) who followed Pfeffer (1889); at present there is no evidence that the species occurs other than at South Georgia. Medusae were found on two substrata. Large animals (~30mm high, inconspicuous dark brown in colour) were found on the underside of boulders at extreme low spring tide level in a bay on the north of Husvik Harbour about 1·2 km from the whaling station and close to Brain Island. Locally they were common, often being close enough to touch one another. Smaller animals (pink-orange in colour; cryptic on the macroalga) were found attached to the brown macroalga Desmarestia menziesii J. Aghardh (Phaeophyceae) collected at low-water spring tide level from Kanin Point on the southern shore of the harbour. Medusae on boulders were briefly emersed on particularly low tides: they collapsed, hanging from the peduncle, when out of water, but did not risk desiccation as their habitat was wet and not exposed to the sun. |
format |
Article in Journal/Newspaper |
author |
Davenport, John |
spellingShingle |
Davenport, John Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
author_facet |
Davenport, John |
author_sort |
Davenport, John |
title |
Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
title_short |
Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
title_full |
Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
title_fullStr |
Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
title_full_unstemmed |
Note on the Trophic Relationships of the Stauromedusa Haliclystus Antarcticus from Subantarctic South Georgia |
title_sort |
note on the trophic relationships of the stauromedusa haliclystus antarcticus from subantarctic south georgia |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0025315400041709 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041709 |
long_lat |
ENVELOPE(-36.700,-36.700,-54.167,-54.167) ENVELOPE(-36.667,-36.667,-54.167,-54.167) ENVELOPE(-36.700,-36.700,-54.183,-54.183) ENVELOPE(-62.152,-62.152,-71.433,-71.433) |
geographic |
Brain Island Husvik Harbour Kanin Point O'Sullivan |
geographic_facet |
Brain Island Husvik Harbour Kanin Point O'Sullivan |
genre |
Antarc* antarcticus Brain Island |
genre_facet |
Antarc* antarcticus Brain Island |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 78, issue 2, page 663-664 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315400041709 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
78 |
container_issue |
2 |
container_start_page |
663 |
op_container_end_page |
664 |
_version_ |
1802651720922169344 |