Effects of ocean acidification on life parameters and antioxidant system in the marine copepod Tigriopus japonicus

Lee, Young Hwan; Kang, Hye-Min; Kim, Min‐Sub; Wang, Minghua; Kim, Jeong Ha; Jeong, Chang‐Bum; Lee, Jae‐Seong

doi:10.1016/j.aquatox.2019.05.007

Cited by 40 publications

(16 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, exposure to slightly acidic conditions for 24 hours resulted in a different transcriptomic response-the upregulation of oxidative stress proteins-in Tigriopus japonicus, a sister species of T. californicus (Y. H. Lee et al, 2019). It would seem that temporal covariance does not result in correlated adaptation as strongly as geographic correlation has for some other traits and species (Egea-Serrano, Hangartner, Laurila, & Räsänen, 2014;Everatt, Convey, Bale, Worland, & Hayward, 2015;Minias & Janiszewski, 2020;Pallarés, Botella-Cruz, Arribas, Millán, & Velasco, 2017), but to our knowledge the correlation between hypoxia and pH tolerance has not been directly explored previously.…”

Section: Discussionmentioning

confidence: 99%

Latitudinal cline in hypoxia tolerance does not result in correlated acid tolerance inTigriopus californicus

Willett

2021

Preprint

View full text Add to dashboard Cite

Intertidal organisms must tolerate a wide range of environmental parameters each day which may result in tolerance to multiple stressors correlating. The intertidal copepod Tigriopus californicus experiences diurnal variation in dissolved oxygen levels and pH as the opposing processes of photosynthesis and cellular respiration lead to coordinated highs during the day and lows at night. While environmental parameters with overlapping spatial gradients frequently result in correlated traits, less attention has been given to exploring temporally correlated stressors. We investigated whether hypoxia tolerance correlated with acid tolerance by testing the hypoxia and low pH stress tolerance of 6 genetically differentiated populations of T. californicus. We checked for similarities in tolerance for the two stressors by latitude, sex, size, and time since collection as predictors. We found that although hypoxia tolerance correlated with latitude, acid tolerance did not, and no predictor was significant for both stressors. We concluded that temporally coordinated exposure to low pH and low oxygen did not result in populations developing equivalent tolerance for both.

show abstract

Section: Discussionmentioning

confidence: 99%

Latitudinal cline in hypoxia tolerance does not result in correlated acid tolerance inTigriopus californicus

Willett

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The following Table 2 display the fish growth performance parameters after 8 weeks of growth trial, fed with the same diet. 5 FCR (Feed Conversion Ratio) = the amount of feed necessary to produce a unit of animal weight increase = dry diet-fed (g)/wet weight gain (g). 6 FE (Feed efficiency) (%) = 100 × Fish body weight (g)/Dry feed(g) 7 HSI (Hepatosomatic) (%) = 100 × Liver weight (g)/Body weight (g).…”

Section: Growth Parametersmentioning

confidence: 99%

“…The full report of the Intergovernmental Panel on Climate Change (IPCC) published in 2019 [ 1 ] informed that from the pre-industrial period (1850–1900) until the present time, 2021, the Industrial Revolution involving the anthropogenic emission of CO 2 into the atmosphere has led to climate change, causing ocean warming and acidification [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Considering the land-based greenhouse gas (GHGs), the fifth assessment report on climate change (AR5) conveyed with medium confidence that the annual net CO 2 emissions from anthropogenic land-use change were 0.9 (0.1–1.7) gigaton of carbon per year (GtC∙yr –1 ), on average, from 2002 to 2011.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream (Acanthopagrus schlegelii), Physiological and Histological Studies

Tegomo

Zhong

Njomoue

et al. 2021

Animals

View full text Add to dashboard Cite

Acidification (OA), a global threat to the world’s oceans, is projected to significantly grow if CO2 continues to be emitted into the atmosphere at high levels. This will result in a slight decrease in pH. Since the latter is a logarithmic scale of acidity, the higher acidic seawater is expected to have a tremendous impact on marine living resources in the long-term. An 8-week laboratory experiment was designed to assess the impact of the projected pH in 2100 and beyond on fish survival, health, growth, and fish meat quality. Two projected scenarios were simulated with the control treatment, in triplicates. The control treatment had a pH of 8.10, corresponding to a pCO2 of 321.37 ± 11.48 µatm. The two projected scenarios, named Predict_A and Predict_B, had pH values of 7.80-pCO2 = 749.12 ± 27.03 and 7.40-pCO2 = 321.37 ± 11.48 µatm, respectively. The experiment was preceded by 2 weeks of acclimation. After the acclimation, 20 juvenile black sea breams (Acanthopagrus schlegelii) of 2.72 ± 0.01 g were used per tank. This species has been selected mainly due to its very high resistance to diseases and environmental changes, assuming that a weaker fish resistance will also be susceptibly affected. In all tanks, the fish were fed with the same commercial diet. The seawater’s physicochemical parameters were measured daily. Fish samples were subjected to physiological, histological, and biochemical analyses. Fish growth, feeding efficiency, protein efficiency ratio, and crude protein content were significantly decreased with a lower pH. Scanning electron microscopy revealed multiple atrophies of microvilli throughout the small intestine’s brush border in samples from Predict_A and Predict_B. This significantly reduced nutrient absorption, resulting in significantly lower feed efficiency, lower fish growth, and lower meat quality. As a result of an elevated pCO2 in seawater, the fish eat more than normal but grow less than normal. Liver observation showed blood congestion, hemorrhage, necrosis, vacuolation of hepatocytes, and an increased number of Kupffer cells, which characterize liver damage. Transmission electron microscopy revealed an elongated and angular shape of the mitochondrion in the liver cell, with an abundance of peroxisomes, symptomatic of metabolic acidosis.

show abstract

“…The harpacticoid copepod Tigriopus japonicus has been often used for ecotoxicological studies. The GST gene expression and enzymatic activity in this copepod have been reported to increase after exposure to a water-accommodated fraction of crude oil [11,12]; endocrine disrupting chemicals [13], hydrogen peroxide [14], heavy metals (e.g., manganese [14], copper [14,15], nickel [16], cadmium [15,17], silver, and arsenic [15]), the brominated flame retardants (e.g., hexabromocyclododecanes) [18], low pH (pH 7.5 and 7.0; [19]), β-Naphtoflavone [20], the antimicrobial agent triclosan [21], and the widely used insecticide cypermethrin [22]. The cytosolic GST belonging to the sigma subclass, has been reported as the most up-regulated after exposure to both hydrogen peroxide and trace metals (i.e., silver, arsenic, cadmium, and copper).…”

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

confidence: 99%

Glutathione S-Transferases in Marine Copepods

Lauritano

Carotenuto

Roncalli

2021

JMSE

View full text Add to dashboard Cite

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.

show abstract

Effects of ocean acidification on life parameters and antioxidant system in the marine copepod Tigriopus japonicus

Cited by 40 publications

References 58 publications

Latitudinal cline in hypoxia tolerance does not result in correlated acid tolerance inTigriopus californicus

Latitudinal cline in hypoxia tolerance does not result in correlated acid tolerance inTigriopus californicus

Experimental Studies on the Impact of the Projected Ocean Acidification on Fish Survival, Health, Growth, and Meat Quality; Black Sea Bream (Acanthopagrus schlegelii), Physiological and Histological Studies

Glutathione S-Transferases in Marine Copepods

Contact Info

Product

Resources

About