Biochemical composition of Pinna rugosa and its relationship with the reproductive cycle and environmental variables

Pinna rugosa is part of the Pinnidae family and has high commercial value in México because of the large edible muscle. Although this species is ecologically and commercially important, it has been poorly studied compared to other related species. The fishery of P. rugosa is at maximum sustainable yield, so exploitation should be carefully managed. To sustainably manage stocks, an improved understanding of all aspects of this species is needed, including its reproduction, ecology, and energetic physiology. At monthly intervals during 2015, we measured biochemical constituents of P. rugos a —including the total carbohydrate, lipid, and protein content of the muscle, mantle, gonad and digestive gland—from Laguna Ojo de Liebre. A clear reallocation of resources was observed from the mantle, adductor muscle, and digestive gland to the gonad for gametogenesis. The digestive gland serves as the primary energy reservoir for this species. Significant differences in the concentrations of carbohydrates, lipids, and proteins were detected between the cold and hot seasons. These findings highlight the strong relationship between biochemical composition and environmental conditions. Understanding these dynamics provides valuable insights for sustainable fisheries and aquaculture management, contributing to the long-term conservation of P. rugosa populations.