The Effect of Sex and Relationship between Carapace Length and Oxidant/Antioxidant Status According to Tissue-Specific of Astacus leptodactylus (Esch. 1823) Freshwater Crayfish

摘要

The objectives of this study is to investigate the relationship between carapace length of Astacus leptodactylus and oxidant (lipid peroxidation as malondialdehyde (MDA))/antioxidant (glutathione peroxidase (GSH-Px)) status according to tissues-specific and on this relationship was to determine the effect of sex during breeding period. However, the MDA and GSH-Px levels according to sex and tissue-species were determined. Crayfish was catched from Keban Dam Lake-Elazig (Turkey). A. leptodactylus males and females were divided into three different groups (38-46.9 mm CL (I), 47-55.9 mm CL (II) and 56-64.9 mm CL (III)). There was no clear relationship between crayfish CL and GSH-Px levels in the hepatopancreas and muscle tissues in each sex. But, higher levels of the MDA in the gonad tissues found in group I (♂: 2.14±0.10, ♀: 11.24+0.65) and group II (♂: 1.96±0.06, ♀: 11.92±0.80) compared with group III (♂: 1.71±0.06, ♀ :5.33±0.42) (p<0.05, p<0.001 respectively), while GSH-Px were lower. However, according to sex, the MDA level in gonad and muscle of female crayfish was higher than male crayfish (p<0.001 for either). Generally, according to tissue-species, the highest MDA and GSH-Px levels were found in the hepatopancreas and gonad compared with muscle (p<0.001).