Reduced superoxide dismutase activity in Palaemonetes argentinus (Decapoda, Palemonidae) infected by Probopyrus ringueleti (Isopoda, Bopyridae)

Abstract

Cellular oxidative stress may promote damage or death in biological systems and may be caused by production of pro-oxidant molecules known as reactive oxygen species (ROS). , 1987), a gill chamber parasite known for its capacity to cause host metabolic changes, including changes in oxygen consumption rates. Infested and non-infested shrimp were collected in the Patos Lagoon estuary (southern Brasil), where the prevalence of the paraslte may be as high as 70%. No significant differences were observed for either CAT or GPx activities However, SOD activity was significantly reduced in lnfected shrimp, suggesting that bopyrid isopod respiratory impairment resulted in reduced SOD enzyme activity

Effects of the parasite Probopyrus ringueleti (Isopoda) on glucose, glycogen and lipid concentration in starved Palaemonetes argentinus (Decapoda)

“…On the other hand, carbohydrates appear to be of great importance, because the glycogen concentration was significantly higher (p < 0.05) in parasitized shrimp. Carbohydrate dependency in parasitized shrimp could be a reflex to the lower ability to oxidize lipids, especially considering that bopyrid isopods cause respiratory impairment to their hosts (Anderson 1975, Schuldt & Rodrigues-Capítulo 1987, Neves et al 2000.…”

Joint effects of parasitism and pollution on oxidative stress biomarkers in yellow perch Perca flavescens

“…The authors attributed this response to the increased metabolic activity of infected fish. Shrimp Palaemonetes argentinus infected with the isopod Probopyrus ringueleti exhibited lower activity of the antioxidant enzyme superoxidase dismutase, which presumably lowers the capacity of the organism to deal with reactive oxygen species and thus to prevent cellular damage (Neves et al 2000). Other examples are reviewed in Sures (2004), who also recently reviewed the influence of parasites on biomarkers and discussed their possible impact on the physiological homeostasis of their hosts.…”

Generation of superoxide anion and SOD activity in haemocytes and muscle of American white shrimp ( ) as a response to β-glucan and sulphated polysaccharide

“…This was followed by a decrease of the antioxidant levels below control values at 48-72 h. This is similar to those studies related to oxidative stress such as pollution, bacterial infections, decrease of oxygen content in culture tanks, or the use of immunostimulants. Neves et al [42] reported a significant decrease in SOD activity when shrimp (Palaemonetes argentinus Nobili, 1901) was infected by Probopyrus ringueleti. Macmillan-Crow [43] suggested that inhibition of Mn-SOD activity by peroxynitrite could be related to numerous disease states.…”