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Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)

Some western Norwegian fjords host extraordinarily abundant and persistent populations of the mesopelagic, coronate scyphomedusa, Periphylla periphylla. In these environments, from late autumn to spring, the medusae undertake regular diel vertical migrations into surface waters. From unique observat...

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Detalles Bibliográficos
Autores principales: Sørnes, Tom A., Hosia, Aino, Båmstedt, Ulf, Aksnes, Dag L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2007
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182610/
https://www.ncbi.nlm.nih.gov/pubmed/30363824
http://dx.doi.org/10.1007/s00227-007-0839-1
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author Sørnes, Tom A.
Hosia, Aino
Båmstedt, Ulf
Aksnes, Dag L.
author_facet Sørnes, Tom A.
Hosia, Aino
Båmstedt, Ulf
Aksnes, Dag L.
author_sort Sørnes, Tom A.
collection PubMed
description Some western Norwegian fjords host extraordinarily abundant and persistent populations of the mesopelagic, coronate scyphomedusa, Periphylla periphylla. In these environments, from late autumn to spring, the medusae undertake regular diel vertical migrations into surface waters. From unique observations obtained with a remotely operated vehicle (ROV), including observations made without artificial light, we observed that 90% of the medusae swam with their tentacles in aboral position. Stomach content analyses of surface-collected specimens revealed that the medusae ate mainly calanoid copepods, but ostracods and large euphausiids were also prominent components of their diets. The clearance rate potential of P. periphylla, assessed from in situ observations and stomach contents, was comparable to that of similar-sized, epipelagic gelatinous species. Our findings suggest that P. periphylla behave as active predators in surface waters.
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spelling pubmed-61826102018-10-22 Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae) Sørnes, Tom A. Hosia, Aino Båmstedt, Ulf Aksnes, Dag L. Mar Biol Research Article Some western Norwegian fjords host extraordinarily abundant and persistent populations of the mesopelagic, coronate scyphomedusa, Periphylla periphylla. In these environments, from late autumn to spring, the medusae undertake regular diel vertical migrations into surface waters. From unique observations obtained with a remotely operated vehicle (ROV), including observations made without artificial light, we observed that 90% of the medusae swam with their tentacles in aboral position. Stomach content analyses of surface-collected specimens revealed that the medusae ate mainly calanoid copepods, but ostracods and large euphausiids were also prominent components of their diets. The clearance rate potential of P. periphylla, assessed from in situ observations and stomach contents, was comparable to that of similar-sized, epipelagic gelatinous species. Our findings suggest that P. periphylla behave as active predators in surface waters. Springer Berlin Heidelberg 2007-10-30 2008 /pmc/articles/PMC6182610/ /pubmed/30363824 http://dx.doi.org/10.1007/s00227-007-0839-1 Text en © Springer-Verlag 2007
spellingShingle Research Article
Sørnes, Tom A.
Hosia, Aino
Båmstedt, Ulf
Aksnes, Dag L.
Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title_full Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title_fullStr Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title_full_unstemmed Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title_short Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae)
title_sort swimming and feeding in periphylla periphylla (scyphozoa, coronatae)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182610/
https://www.ncbi.nlm.nih.gov/pubmed/30363824
http://dx.doi.org/10.1007/s00227-007-0839-1
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