ABSTRACT Procambarus clarkii is a freshwater crayfish native to the southern central United States and northern Mexico. In Brazil, it is only present in natural environment in the state of São Paulo. Nutritional and reproductive markers were quantified and characterized, as well as intermediate metabolism and oxidative balance in females of P. clarkii collected in a natural environment over a seasonal cycle. Samples of hemolymph and different tissue were obtained. The degree of gastric repletion presented the highest rates in the spring. An investment in reproduction was detected in the summer, when the energy reserves of the hepatopancreas were mobilized for gonadal maturation, and a higher percentage of mature gonads were observed. In the same period, we observed an increase in lipoperoxidation, despite the increased activity of superoxide dismutase and glutathione S-transferase in muscle and gonads. An increase in the levels of lipoperoxidation and glutathione S-transferase was observed in winter.

中文翻译：

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巴西东南部季节性周期中红沼泽小龙虾 Procambarus clarkii (Girard, 1852) (甲壳纲, Cambaridae) 雌性的生化功能参数

摘要 Procambarus clarkii 是一种淡水小龙虾，原产于美国中南部和墨西哥北部。在巴西，它只存在于圣保罗州的自然环境中。营养和生殖标志物被量化和表征，以及在季节性周期中自然环境中收集的 P. clarkii 雌性的中间代谢和氧化平衡。获得了血淋巴和不同组织的样品。春季胃充盈率最高。在夏季检测到繁殖投资，当时肝胰腺的能量储备被调动用于性腺成熟，并且观察到更高百分比的成熟性腺。在同一时期，我们观察到脂质过氧化增加，尽管肌肉和性腺中超氧化物歧化酶和谷胱甘肽 S-转移酶的活性增加。在冬季观察到脂质过氧化和谷胱甘肽 S-转移酶水平升高。