Metabolic and oxidative stress responses of the jellyfish Cassiopea to pollution in the Gulf of Aqaba, Jordan

Samir M. Aljbour; Fuad A. Al-Horani; Andreas Kunzmann

doi:10.1016/j.marpolbul.2018.03.044

Metabolic and oxidative stress responses of the jellyfish Cassiopea to pollution in the Gulf of Aqaba, Jordan

Samir M. Aljbour^*, Fuad A. Al-Horani, Andreas Kunzmann

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Physiological responses of jellyfish to pollution are virtually overlooked. We measured the activity of two glycolytic enzymes (pyruvate kinase (PK) and lactate dehydrogenase (LDH)), lipid peroxidation (LPO), protein and chlorophyll a content in the jellyfish Cassiopea sp. from polluted and reference sites along the Gulf of Aqaba, Jordan. In jellyfish from polluted sites, low PK/LDH ratios and high LDH activity clarify their reliance on anaerobic metabolism. PK and LDH were positively correlated in the jellyfish. While medusae from polluted sites showed no signs of oxidative stress damage, protein content was significantly lower. This might suggest protein utilization for energy production needed for maintenance. Unchanged LPO in polluted sites indicates the ability of jellyfish to keep reactive oxygen species under control. Overall these results suggest that the jellyfish seems to tolerate the current levels of pollution at the studied sites and they might be anaerobically poised to live at such habitats.

Original language	English (US)
Pages (from-to)	271-278
Number of pages	8
Journal	Marine pollution bulletin
Volume	130
DOIs	https://doi.org/10.1016/j.marpolbul.2018.03.044
State	Published - May 2018

Bibliographical note

Funding Information:
This work was supported by Leibniz funds from the Leibniz Gemeinschaft Germany [grant number ZMT-PB-3100/6057 ]. We would like to thank the MSS diving staff for their help in the field, namely Eyad Azgool, Morsi Abuabdalh and Tareq Alsalman. We are grateful to the staff of MSS and ZMT laboratories for support. Special thanks go to Dr. Achim Meyer for his fruitful comments. Funding: We thank the reviewers of this manuscript for their constructive comments.

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Anaerobic metabolism
Lactate dehydrogenase
Lipid peroxidation
Pyruvate kinase
Sedimentation rate
Upside-down jellyfish

ASJC Scopus subject areas

Oceanography
Aquatic Science
Pollution

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10.1016/j.marpolbul.2018.03.044

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title = "Metabolic and oxidative stress responses of the jellyfish Cassiopea to pollution in the Gulf of Aqaba, Jordan",

abstract = "Physiological responses of jellyfish to pollution are virtually overlooked. We measured the activity of two glycolytic enzymes (pyruvate kinase (PK) and lactate dehydrogenase (LDH)), lipid peroxidation (LPO), protein and chlorophyll a content in the jellyfish Cassiopea sp. from polluted and reference sites along the Gulf of Aqaba, Jordan. In jellyfish from polluted sites, low PK/LDH ratios and high LDH activity clarify their reliance on anaerobic metabolism. PK and LDH were positively correlated in the jellyfish. While medusae from polluted sites showed no signs of oxidative stress damage, protein content was significantly lower. This might suggest protein utilization for energy production needed for maintenance. Unchanged LPO in polluted sites indicates the ability of jellyfish to keep reactive oxygen species under control. Overall these results suggest that the jellyfish seems to tolerate the current levels of pollution at the studied sites and they might be anaerobically poised to live at such habitats.",

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author = "Aljbour, {Samir M.} and Al-Horani, {Fuad A.} and Andreas Kunzmann",

note = "Funding Information: This work was supported by Leibniz funds from the Leibniz Gemeinschaft Germany [grant number ZMT-PB-3100/6057 ]. We would like to thank the MSS diving staff for their help in the field, namely Eyad Azgool, Morsi Abuabdalh and Tareq Alsalman. We are grateful to the staff of MSS and ZMT laboratories for support. Special thanks go to Dr. Achim Meyer for his fruitful comments. Funding: We thank the reviewers of this manuscript for their constructive comments. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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N2 - Physiological responses of jellyfish to pollution are virtually overlooked. We measured the activity of two glycolytic enzymes (pyruvate kinase (PK) and lactate dehydrogenase (LDH)), lipid peroxidation (LPO), protein and chlorophyll a content in the jellyfish Cassiopea sp. from polluted and reference sites along the Gulf of Aqaba, Jordan. In jellyfish from polluted sites, low PK/LDH ratios and high LDH activity clarify their reliance on anaerobic metabolism. PK and LDH were positively correlated in the jellyfish. While medusae from polluted sites showed no signs of oxidative stress damage, protein content was significantly lower. This might suggest protein utilization for energy production needed for maintenance. Unchanged LPO in polluted sites indicates the ability of jellyfish to keep reactive oxygen species under control. Overall these results suggest that the jellyfish seems to tolerate the current levels of pollution at the studied sites and they might be anaerobically poised to live at such habitats.

AB - Physiological responses of jellyfish to pollution are virtually overlooked. We measured the activity of two glycolytic enzymes (pyruvate kinase (PK) and lactate dehydrogenase (LDH)), lipid peroxidation (LPO), protein and chlorophyll a content in the jellyfish Cassiopea sp. from polluted and reference sites along the Gulf of Aqaba, Jordan. In jellyfish from polluted sites, low PK/LDH ratios and high LDH activity clarify their reliance on anaerobic metabolism. PK and LDH were positively correlated in the jellyfish. While medusae from polluted sites showed no signs of oxidative stress damage, protein content was significantly lower. This might suggest protein utilization for energy production needed for maintenance. Unchanged LPO in polluted sites indicates the ability of jellyfish to keep reactive oxygen species under control. Overall these results suggest that the jellyfish seems to tolerate the current levels of pollution at the studied sites and they might be anaerobically poised to live at such habitats.

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Metabolic and oxidative stress responses of the jellyfish Cassiopea to pollution in the Gulf of Aqaba, Jordan

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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