SOD2 and infection: Total MnSOD in crustaceans is treated not only as a defense response against fasting, but also as an important factor in the immune responses against pathogen infections (Zhang et al., 2007; Yu et al., 2011), metal exposure (Haque et al., 2018) and even water pollution and ozonization (Oropesa, Floro & Palma, 2017).