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Cited by 54Marine Invertebrate Physiology and EcologyMarine Biology and Ecology ResearchCephalopods and Marine Biology

Opposite Patterns of Diurnal Activity in the Box Jellyfish Tripedalia cystophora and Copula sivickisi

Garm, A., Bielecki, J., Petie, R., Nilsson, D.-E.·2012·The Biological Bulletin
DOI 10.1086/bblv222n1p35
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Abstract

Cubozoan medusae have a stereotypic set of 24 eyes, some of which are structurally similar to vertebrate and cephalopod eyes. Across the approximately 25 described species, this set of eyes varies surprisingly little, suggesting that they are involved in an equally stereotypic set of visual tasks. During the day Tripedalia cystophora is found at the edge of mangrove lagoons where it accumulates close to the surface in sun-lit patches between the prop roots. Copula sivickisi (formerly named Carybdea sivickisi) is associated with coral reefs and has been observed to be active at night. At least superficially, the eyes of the two species are close to identical. We studied the diurnal activity pattern of these two species both in the wild and under controlled conditions in laboratory experiments. Despite the very similar visual systems, we found that they display opposite patterns of diurnal activity. T. cystophora is active exclusively during the day, whereas C. sivickisi is actively swimming at night, when it forages and mates. At night T. cystophora is found on the muddy bottom of the mangrove lagoon. C. sivickisi spends the day attached to structures such as the underside of stones and coral skeletons. This species difference seems to have evolved to optimize foraging, since the patterns of activity follow those of the available prey items in their respective habitats.

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  • A sleep-like state may not be specific to Cassiopea; other cnidarians may also exhibit it.

    “Although future studies are required to test whether other cnidarians sleep, field studies showing behavioral quiescence, diel vertical migration, and swimming speeds that vary with diel period [21,22,23,37] suggest that a sleep-like state may not be specific to Cassiopea.”

    From The Jellyfish Cassiopea Exhibits a Sleep-like State (2017) · cites this paper as [22]

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Authors
Garm, A., Bielecki, J., Petie, R., & Nilsson, D.-E.
Affiliations
  • University of Copenhagen (DK)
  • Lund University (SE)
ORCID
Venue
The Biological Bulletin
Publisher
University of Chicago Press
Published
2012-02
Volume
222
Issue
1
Pages
35-45
ISSN
  • 0006-3185 (ISSN-L)
  • 1939-8697
DOI
10.1086/bblv222n1p35
OpenAlex
W2128665900
Cited by
54
References
32
Citations by year
2026: 7 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 6 · 2021: 2 · 2020: 5 · 2019: 1 · 2018: 1 · 2017: 5 · 2016: 6 · 2015: 2 · 2014: 4 · 2013: 5
FWCI
2.60
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Bulletin (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Cephalopods and Marine Biology
Keywords
Tripedalia cystophora, box jellyfish, diurnal activity patterns, circadian rhythm, visual system evolution, eye morphology, foraging behavior, habitat use, mangrove lagoons, coral reefs, predation
MeSH terms
Animals, Circadian Rhythm, Luminescent Measurements, Movement, Photic Stimulation, Predatory Behavior, Species Specificity, Sunlight, Swimming, Time Factors, Ecosystem, Cubozoa

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