Effects of low salinity on settlement and strobilation of scyphozoa (Cnidaria): Is the lion's mane Cyanea capillata (L.) able to reproduce in the brackish Baltic Sea

Several species of scyphozoan medusae occur in river estuaries and other brackish waters but it is often unknown if the planulae settle and the scyphopolyps reproduce in those low-salinity waters. In the present study, scyphozoan species from the German Bight (North Sea) were tested in laboratory ex...

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Bibliographic Details
Published in:Hydrobiologia 2010-05, Vol.645 (1), p.53-68
Main Authors: Holst, Sabine, Jarms, Gerhard
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal populations
Animal, plant and microbial ecology
Aurelia aurita
Biological and medical sciences
Biomedical and Life Sciences
Brackish
Chrysaora hysoscella
Cnidaria
Cnidaria. Ctenaria
Cyanea capillata
Cyanea lamarckii
Ecology
Estuaries
Freshwater & Marine Ecology
Fundamental and applied biological sciences. Psychology
General aspects
Invertebrates
Jellyfish Blooms
Larvae
Life Sciences
Marine
Marine biology
Salinity
Scyphozoa
Synecology
Zoology
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Summary:Several species of scyphozoan medusae occur in river estuaries and other brackish waters but it is often unknown if the planulae settle and the scyphopolyps reproduce in those low-salinity waters. In the present study, scyphozoan species from the German Bight (North Sea) were tested in laboratory experiments to investigate their tolerance of low salinity. Planula larvae released from medusae in salinity 32 were still active after the salinity was reduced to 10 (Cyanea capillata, Cyanea lamarckii) and to 7 (Chrysaora hysoscella) in laboratory treatments. Planulae did not settle on the undersides of floating substrates when salinity was reduced to
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-010-0214-y