Physiological responses of the upside-down jellyfish, Cassiopea (Cnidaria: Scyphozoa: Cassiopeidae) to temperature and implications for their range expansion along the east coast of Australia

Rowe, Claire E.; Keable, Stephen J.; Ahyong, Shane T.; Figueira, Will F.

doi:10.1016/j.jembe.2022.151765

Cited by 8 publications

(12 citation statements)

References 37 publications

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“…Thus, it is possible that Cassiopea sampled from both sites represent the same population and are thus robust to stable and fluctuating temperatures. These results are consistent with the overall observed robustness of C. xamachana relative to other marine (Aljbour et al, 2019;Banha et al, 2020;Béziat & Kunzmann, 2022;McGill & Pomory, 2008;Medina et al, 2021;Ohdera et al, 2018;Rowe et al, 2022). In fact, Cassiopea sp.…”

Section: Environmental History Does Not Shape How Cassiopea Respond T...supporting

confidence: 90%

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Blue appendages and temperature acclimation increase survival during acute heat stress in the upside-down jellyfish,Cassiopea xamachana

Maloney,

Buckley,

Strader

2024

Preprint

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Upside-down jellyfish (Cassiopea sp.) are highly tolerant to multiple abiotic stressors, including fluctuating temperatures associated with shallow marine habitats. This resilience may underlie the ability ofCassiopea sp.to inhabit a wide variety of tropical habitats across the globe. Additionally,Cassiopea sp.are marked by a conspicuous array of appendage coloration; individual medusae vary in the hue and number of oral appendages, which are often strikingly blue. The function of this coloration is not understood. We aimed to understand how extrinsic and intrinsic factors may shape thermal tolerance. AdultCassiopea xamachanawere collected from two sites that vary in daily temperature range within the Florida Keys and were subjected to acute lethal heat stress experiments. To quantify a whole-organism response to heat, we measured changes in bell pulsation, which likely plays a role in feeding, oxygen exchange, and symbiont uptake. Results show thatC. xamachanafrom the two collection sites do not exhibit different responses to heat, suggesting that temperature fluctuations do not prime individuals for higher thermal tolerance. Additionally,C. xamachanawith blue appendages survived significantly higher temperatures and exhibited less change in bell pulsation rates compared to non-blue individuals. Finally, color morphs were acclimated at either ambient (26 °C) or elevated (33 °C) temperatures. We found that acclimation at 33 °C, as well as appendage color in each treatment, led to higher survival under acute heat stress. Together, these findings highlight the importance of phenotypic plasticity and coloration inCassiopearesilience during heat stress.

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Section: Environmental History Does Not Shape How Cassiopea Respond T...supporting

confidence: 90%

“…primarily inhabit shallow coastal ecosystems, where temperatures vary considerably among seasons and even within days (Aljbour et al, 2019;Kayal et al, 2018;Rowe et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Blue appendages and temperature acclimation increase survival during acute heat stress in the upside-down jellyfish,Cassiopea xamachana

Maloney,

Buckley,

Strader

2024

Preprint

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“…can release greater quantities of nutrient-rich porewater during the summer months. This was confirmed by a recent study on the related species, Cassiopea medusa from Lake Macquarie, Australia 8 . By extension, our model suggests that pulsing, and therefore porewater release, should cease entirely below 18ºC.…”

Section: Discussionsupporting

confidence: 78%

“…Since bell pulse rates are temperature-dependent in Cassiopea 8 , temperature may also impact porewater and nutrient transfer. Cassiopea are found in tropical and subtropical regions, and as such they are cold-sensitive and seasonal changes in water temperature have an effect on their population density and behavior 8 . Cassiopea have decreased metabolic rates under cold conditions [8][9][10] , and low ambient temperatures negatively affect bell diameter and pulse rate 8 .…”

mentioning

confidence: 99%

“…Cassiopea are found in tropical and subtropical regions, and as such they are cold-sensitive and seasonal changes in water temperature have an effect on their population density and behavior 8 . Cassiopea have decreased metabolic rates under cold conditions [8][9][10] , and low ambient temperatures negatively affect bell diameter and pulse rate 8 . This physiological limitation to mobility has the potential to further impact benthic-pelagic coupling, particularly in the more temperate portions of their range, and for this reason we also investigate the relationship between temperature and behavior in this study.…”

mentioning

confidence: 99%

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Benthic jellyfish act as suction pumps to facilitate release of interstitial porewater

Durieux

Scrogham

Fender

et al. 2023

Sci Rep

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Upside-down jellyfish, genus Cassiopea (Péron and Lesueur, 1809), are found in shallow coastal habitats in tropical and subtropical regions circumglobally. These animals have previously been demonstrated to produce flow both in the water column as a feeding current, and in the interstitial porewater, where they liberate porewater at rates averaging 2.46 mL h−1. Since porewater in Cassiopea habitat can be nutrient-rich, this is a potential source of nutrient enrichment in these ecosystems. This study experimentally determines that porewater release by Cassiopea sp. jellyfish is due to suction pumping, and not the Bernoulli effect. This suggests porewater release is directly coupled to bell pulsation rate, and unlike vertical jet flux, should be unaffected by population density. In addition, we show that bell pulsation rate is positively correlated with temperature, and negatively correlated with animal size. As such, we would predict an increase in the release of nutrient-rich porewater during the warm summer months. Furthermore, we show that, at our field site in Lido Key, Florida, at the northernmost limit of Cassiopea range, population densities decline during the winter, increasing seasonal differences in porewater release.

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Transcriptomic modifications induced by short-term temperature exposure reveal jellyfish adaptive energetic responses

Gamero-Mora,

Nevarez-Lopez,

Llera-Herrera

et al. 2024

Hydrobiologia

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Physiological responses of the upside-down jellyfish, Cassiopea (Cnidaria: Scyphozoa: Cassiopeidae) to temperature and implications for their range expansion along the east coast of Australia

Cited by 8 publications

References 37 publications

Blue appendages and temperature acclimation increase survival during acute heat stress in the upside-down jellyfish,Cassiopea xamachana

Blue appendages and temperature acclimation increase survival during acute heat stress in the upside-down jellyfish,Cassiopea xamachana

Benthic jellyfish act as suction pumps to facilitate release of interstitial porewater

Transcriptomic modifications induced by short-term temperature exposure reveal jellyfish adaptive energetic responses

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