Effects of paralytic shellfish poisoning toxin-producing dinoflagellate Gymnodinium catenatum on the marine copepod Tigriopus japonicus

Han, Jeonghoon; Park, Joon‐Sang; Park, Yeun; Lee, Jihoon; Shin, Hyunho; Lee, Kyun-Woo

doi:10.1016/j.marpolbul.2020.111937

Cited by 18 publications

(5 citation statements)

References 66 publications

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“…Previous studies also postulate that benthic copepods and other benthic invertebrates have a higher degree of tolerance to toxic algae than their pelagic counterparts [ 27 , 41 , 42 ]. High survival rates are also observed in T. japonicus exposed to various environmental stressors [ 43 , 44 , 45 ]. This is probably due to their physiological acclimation and genetic adaptation to the benthic environments, where the disturbance and contaminant accumulation are high while food supply might be limited relative to pelagic environments.…”

Section: Discussionmentioning

confidence: 99%

Reduced Fitness and Elevated Oxidative Stress in the Marine Copepod Tigriopus japonicus Exposed to the Toxic Dinoflagellate Karenia mikimotoi

et al. 2022

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Blooms of the toxic dinoflagellate Karenia mikimotoi cause devastation to marine life, including declines of fitness and population recruitment. However, little is known about the effects of them on benthic copepods. Here, we assessed the acute and chronic effects of K. mikimotoi on the marine benthic copepod Tigriopus japonicus. Results showed that adult females maintained high survival (>85%) throughout 14-d incubation, but time-dependent reduction of survival was detected in the highest K. mikimotoi concentration, and nauplii and copepodites were more vulnerable compared to adults. Ingestion of K. mikimotoi depressed the grazing of copepods but significantly induced the generation of reactive oxygen species (ROS), total antioxidant capacity, activities of antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase), and acetylcholinesterase. Under sublethal concentrations for two generations, K. mikimotoi reduced the fitness of copepods by prolonging development time and decreasing successful development rate, egg production, and the number of clutches. Our findings suggest that the bloom of K. mikimotoi may threaten copepod population recruitment, and its adverse effects are associated with oxidative stress.

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Section: Discussionmentioning

confidence: 99%

Reduced Fitness and Elevated Oxidative Stress in the Marine Copepod Tigriopus japonicus Exposed to the Toxic Dinoflagellate Karenia mikimotoi

et al. 2022

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“…In C. finmarchicus feeding on the saxitoxin-producing dinoflagellate Alexandrium fundyense, differential expression was reported for four GSTs belonging to different subclasses [39]. Increases in the GST expression levels were also reported in T. japonicus feeding on the dinoflagellate Gymnodinium catenatum [40] and in C. helgolandicus feeding on the toxic diatom Skeletonema marinoi in either laboratory or field conditions [41][42][43]. Down-regulation of GST was also found when C. helgolandicus was fed with the nonbrevetoxin-producing dinoflagellate Karenia brevis [44], while GST did not show significant expression variation when C. sinicus was fed on S. marinoi [45].…”

Section: Glutathione S-transferase Activity In Response To Environmental Stressorsmentioning

confidence: 90%

Glutathione S-Transferases in Marine Copepods

Lauritano

Carotenuto

Roncalli

2021

JMSE

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The glutathione S-transferase (GST) is a complex family of phase II detoxification enzymes, known for their ability to catalyze the conjugation of the reduced form of glutathione (GSH) to a wide variety of endogenous and exogenous electrophilic compounds for detoxification purposes. In marine environments, copepods are constantly exposed to multiple exogenous stressors, thus their capability of detoxification is key for survival. Full identification of the GST family in copepods has been limited only to few species. As for insects, the GST family includes a wide range of genes that, based on their cellular localization, can be divided in three classes: cytosolic, microsomal, and mitochondrial. The role of GSTs might have class-specific features, thus understanding the nature of the GST family has become crucial. This paper covers information of the GST activity in marine copepods based on studies investigating gene expression, protein content, and enzymatic activity. Using published literature and mining new publicly available transcriptomes, we characterized the multiplicity of the GST family in copepods from different orders and families, highlighting the possible role of these genes as biomarker for ocean health status monitoring.

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“…They are vital energy transporters between primary producers and consumers in marine food chains (Fenchel et al 1988;Pinto et al 2001;Ohman and Hirche 2001). The harpacticoid copepod Tigriopus japonicus has been used as a model experimental species for ecotoxicological and ecotoxicogenomic risk assessments (Raisuddin et al 2007;Kita et al 2013;Xu et al 2016;Han et al 2021). This taxon is small (adults ~1.0 mm long) and has a short life cycle (< 2 wks) and high fecundity (30-50 nauplii).…”

Section: Introductionmentioning

confidence: 99%

“…CYP3026A3 and CYP3037A1 were signi cantly upregulated in response to triclosan (TCS) exposure(Park et al 2017). In T. japonicus exposed to the toxic marine dino agellate Gymnodinium catenatum, CYP307E1, CYP3041A1, and CYP3024A2 were signi cantly upregulated(Han et al 2021). CYPs were signi cantly upregulated in response to Cu(Ki et al 2009) and Mn(Kim et al 2013).…”

mentioning

confidence: 96%

“…GST-Delta-E, GST-Mu5, GST-Zeta1, mGST1, and mGST3 were signi cantly upregulated in response to temperature changes(Han et al 2018). In G. catenatum-exposed T. japonicus, GST-kappa, GST-mu5, and GST-omega were signi cantly upregulated(Han et al 2021). Transcriptional GST expression was signi cantly upregulated in response to Ag, Cu, Cd, As, and Mn(Lee et al 2008a;Ki et al 2009;Kim et al 2013;Park et al 2019).…”

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confidence: 99%

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Effects of metal leachates from hydrothermal ore particulates in the marine copepod Tigriopus japonicus

Han

Park

Jeong

et al. 2022

Preprint

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We investigated the effects of metal leachates from hydrothermal ore particulates on the physiological and molecular responses of the marine copepod Tigriopus japonicus. We evaluated its life cycle parameters including survival, development, and fecundity and the transcriptional profiles of its genes regulating detoxification (cytochrome P450 [CYP]), antioxidation (glutathione S-transferase [GST]), and development (vitellogenin [Vtg]) in response to hydrothermal ore and beneficiation leachates. There were preponderances of copper, iron, and zinc in the hydrothermal ore and the leachates derived from it. There were no significant changes in copepod developmental time in response to leachate exposure. However, copepod survival and fecundity significantly changed in response to the leachates. Moreover, the transcriptional profiles of the detoxification, antioxidation, and development-related genes were significantly modulated following leachate treatment. Collectively, our results suggest that metal leachates from hydrothermal ore particulates can promote the transcriptional expression of detoxification, antioxidation, and development-related genes, and altered survival and fecundity in T. japonicus.

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Effects of paralytic shellfish poisoning toxin-producing dinoflagellate Gymnodinium catenatum on the marine copepod Tigriopus japonicus

Cited by 18 publications

References 66 publications

Reduced Fitness and Elevated Oxidative Stress in the Marine Copepod Tigriopus japonicus Exposed to the Toxic Dinoflagellate Karenia mikimotoi

Reduced Fitness and Elevated Oxidative Stress in the Marine Copepod Tigriopus japonicus Exposed to the Toxic Dinoflagellate Karenia mikimotoi

Glutathione S-Transferases in Marine Copepods

Effects of metal leachates from hydrothermal ore particulates in the marine copepod Tigriopus japonicus

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