Temporal variation in oxidative stress indicators in liver of totoaba (Totoaba macdonaldi) Perciformes: Sciaenidae

Abstract

Several characteristics of Totoaba macdonaldi Perciformes: Sciaenidae, including migratory movements along temperature gradients make it vulnerable to oxidative stress. Oxidative stress can also be associated with reproduction. The objectives of the present study were to examine oxidative stress indicators in liver of totoaba throughout the seasons (spring, autumn and winter), and the associated fluctuations in superficial sea temperature (SST, °C), as well as to evaluate possible variations between sexes and reproductive maturity stages. A total of 173 liver samples from totoaba captured in the Gulf of California, Mexico, were obtained from April 2010 to February 2013. Superoxide radical production (O2•−), lipid peroxidation (TBARS) levels, and activity of antioxidant enzymes; superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione S-transferase (GST) were quantified spectrophotometrically. Generalized linear models (GLM) were used to determine which factors contribute to explain O2•− production and TBARS levels. The significant predictive variables were the seasons, which were significant in all applied models, as well as SOD and CAT activities. In general, enzyme activity was higher in immature totoaba; this was not seasonally modified. Low temperatures in winter were associated with high O2•− production and TBARS levels, particularly in totoaba that are not yet reproductively mature. Seasonal changes in sea surface temperature did not affect the oxidative stress indicators in mature totoaba (both males and females); this suggests that mature totoaba are less sensitive to temperature changes from an oxidative stress perspective.

Variations in the lipid peroxidation and antioxidant biomarkers in some tissues of anadromous cyprinid fish during migration

“…PUFAs are highly susceptible to ROS attack, which results in lipid peroxidation (34). The high production of ROS as a result of a stress condition during migration can cause increased lipid peroxidation in the liver (35). In the present study, MDA level also increased in the white muscle of fishes sampled from the stream.…”

Nutritional content ofTotoaba macdonaldi(Gilbert, 1890), Antioxidants and lipid peroxidation in muscle

“…Extreme environmental conditions occur in the northern Gulf of California, especially the delta area. Variations in the oxidative stress indicators in response to changes in biotic and abiotic factors have been previously reported in several fish species ( Aras et al, 2009 ; Pavlović et al, 2010 ; Oliva et al, 2012 ), including T. macdonaldi ( Hernández-Aguilar et al, 2017 ). Results from this study suggest that totoaba faces spatial–temporal variation in muscle oxidative stress indicators that may be associated to a complex interaction between environmental and biological factors, including food availability and temperature.…”

Influence of sex and maturity state on trace elements content in liver and muscle of the SciaenidaeTotoaba macdonaldi

“…In a previous study, liver superoxide dismutase (SOD) activity was found to be related to totoaba’s maturity stage ( Hernández-Aguilar et al, 2018 ); thus, it was used in this study to further discriminate between environmental and physiologic effects on trace element content in totoaba. This third GLM explains 55% of the variance and suggests that in liver, SOD activity is inversely related to Cd concentration in winter and spring ( p < 0.05) but not in autumn ( p > 0.05).…”

“…The GLMs constructed in this study suggest that liver Cd concentration varies inversely with liver Zn concentration, that liver Cd content affects muscle Cd concentrations, and that in the liver, SOD activity is inversely related to Cd concentration and length of the organisms. The totoaba collected in autumn have the highest liver Cd concentrations, and the highest SOD activity ( Hernández-Aguilar et al, 2018 ). In autumn, immature and undifferentiated totoabas feed on sardines and crustaceans ( Cisneros-Mata, Montemayor-Lopez & Roman-Rodriguez, 1995 ).…”