Abstract:
:Jellyfish locomotion and orientation have been studied in the past both in the laboratory, testing mostly small jellyfish, and in the field, where it was impossible to control the seawater currents. Utilizing an outdoor water flume, we tested the locomotion of jellyfish when swimming against and with currents of up to 4.5 cm s-1. We used adult jellyfish from two of the most abundant species in the eastern Mediterranean, Rhopilema nomadica and Rhizostoma pulmo, and measured their pulsation frequency and swimming speed relative to the water. While pulsation frequency was not affected by the water velocity, jellyfish swam faster against the current than with it. This finding suggests that jellyfish possess a sensory ability, whose mechanism is currently unknown, enabling them to gauge the flow and react to it, possibly in order to reduce the risk of stranding.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Malul D,Lotan T,Makovsky Y,Holzman R,Shavit Udoi
10.1038/s41598-019-56311-3subject
Has Abstractpub_date
2019-12-30 00:00:00pages
20337issue
1issn
2045-2322pii
10.1038/s41598-019-56311-3journal_volume
9pub_type
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