Concurrent environmental stressors and jellyfish stings impair caged European sea bass (Dicentrarchus labrax) physiological performances

The increasing frequency of jellyfish outbreaks in coastal areas has led to multiple ecological and socio-economic issues, including mass mortalities of farmed fish. We investigated the sensitivity of the European sea bass (Dicentrarchus labrax), a widely cultured fish in the Mediterranean Sea, to the combined stressors of temperature, hypoxia and stings from the jellyfish Pelagia noctiluca, through measurement of oxygen consumption rates (MO2), critical oxygen levels (PO2crit) and histological analysis of tissue damage. Higher levels of MO2, PO2crit and gill damage in treated fish demonstrated that the synergy of environmental and biotic stressors dramatically impair farmed fish metabolic performances and increase their health vulnerability. As a corollary, in the current scenario of ocean warming, these findings suggest that the combined effects of recurrent hypoxic events and jellyfish blooms in coastal areas might also threaten wild fish populations.

• Publication year

  2016

• Venue

  Scientific Reports

• Publication date

  2016-06-15

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1038/srep27929PMID 27301314PMCID 4908630
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• Under ocean warming, recurrent hypoxic events together with jellyfish blooms in coastal areas may threaten wild fish populations.

  Confidence 0.90

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• The synergy of environmental and biotic stressors impaired metabolic performance and increased health vulnerability in European sea bass (Dicentrarchus labrax).

  Confidence 0.93

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• Combined exposure to temperature, hypoxia, and Pelagia noctiluca stings increased oxygen consumption rate (MO2), critical oxygen level (PO2crit), and gill damage in European sea bass (Dicentrarchus labrax).

  Confidence 0.96

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review

• critical oxygen level (po2crit)

  measurements

  The oxygen partial pressure below which routine oxygen uptake can no longer be maintained.

  Aliases: PO2crit

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• european sea bass (dicentrarchus labrax)

  species

  A Mediterranean finfish species cultured in cages and used as the experimental organism.

  Aliases: Dicentrarchus labrax

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• gill damage

  tissue damages

  Histological injury observed in gill tissue sections.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• hypoxia

  environmental stressors

  Low-oxygen water conditions used as an environmental stressor in the experiment.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• jellyfish blooms

  ecological events

  Episodes of elevated jellyfish abundance in coastal waters.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• ocean warming

  climate trends

  Long-term warming of seawater conditions considered in the paper's broader interpretation.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• oxygen consumption rate (mo2)

  measurements

  A respirometric measure of whole-animal oxygen use.

  Aliases: MO2

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• pelagia noctiluca stings

  biotic stressors

  Stings from the jellyfish Pelagia noctiluca used as the biotic stressor in the exposure.

  Aliases: Pelagia noctiluca

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• temperature

  environmental conditions

  The water-temperature condition manipulated as part of the environmental stress exposure.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review
• wild fish populations

  populations

  Free-living fish populations discussed as potentially exposed to the combined coastal stressors.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewq (76h6bfydm6) reviewB (s683577b42) review

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