In the Caribbean Sea, the winged oyster Pteria colymbus represents a promising resource for food and pearl production. The goal of the present study was to determine the influence of environmental variables generated by the seasonal coastal upwelling on the fatty acid profile (FAP) of the winged oyster Pteria colymbus. Changes in fatty acid (FA) levels were determined by gas chromatography coupled to mass spectrometry. Chlorophyll a (Chl-a), temperature, seston (POM and TPM) and upwelling index (UI) were measured monthly and correlated with the FAPs. Statistical analysis (MDS-ANOSIM) revealed significant differences between FAPs of the soft tissues in the upwelling and non-upwelling seasons. The FAs that mainly explained the variance in the FAPs during the non-upwelling season were 14:0, 16:0, 18:0, 20:4n-6, 20:1n-11NMID, 20:5n-3 and 22:6n-3. During the upwelling season, the FAs that explained the variance were 18:3n-3, 18:4n-3 and 18:2n-6, in addition to those that varied during the non-upwelling season. PCA analysis between FAs and environmental variables in the upwelling season showed that UI presented a direct relationship with acids 16:0, 18:4n-3 and 14:0 and an inverse relationship with 22:6n-3 and temperature. In the second component, chlorophyll a and POM were directly correlated with 18:2n-6, 20:4n-6 and 20:5n-3, and inversely correlated with 18:0, 22:6n-3 and temperature. In the non-upwelling season, temperature showed a direct relationship with 22:6-3 and an inverse relationship with 20:5n-3 and 14:0. POM, Chl-a and UI showed a direct relationship with 16:0 FA and an inverse relationship with 22:6n.3, 20:1n-11NMID, 20:4n-6, 18:0 and temperature. This study shows how dominant oceanographic conditions in the upwelling and non-upwelling periods modulate FA levels in P. colymbus.

在加勒比海，有翅牡蛎Pteria colymbus代表着有前途的食物和珍珠生产资源。本研究的目的是确定季节性沿海上升流产生的环境变量对带翅牡蛎Pteria colymbus脂肪酸谱（FAP）的影响。脂肪酸（FA）水平的变化是通过气相色谱与质谱联用确定的。叶绿素a（叶绿素a），每月测量一次温度，Seston（POM和TPM）和上升指数（UI），并将其与FAP相关联。统计分析（MDS-ANOSIM）显示，软组织的FAP在上升和非上升季节之间存在显着差异。非上流季节主要解释FAP差异的FA为14：0、16：0、18：0、20：4n-6、20：1n-11NMID，20：5n-3和22：6n -3。在上升流季节，除了那些在非上升流季节变化的FA之外，解释差异的FA分别为18：3n-3、18：4n-3和18：2n-6。在上升季节FA和环境变量之间的PCA分析表明，UI与酸16：0、18：4n-3和14：0呈直接关系，与酸22：6n-3和温度呈反比例关系。在第二部分中，叶绿素aPOM和POM与18：2n-6、20：4n-6和20：5n-3直接相关，与18：0、22：6n-3和温度负相关。在非上升季节，温度与22：6-3成正比，与20：5n-3和14：0成反比。POM，Chl-一个和UI显示出与16的直接关系：0 FA和22相反的关系：6n.3，20：1N-11NMID，20：4N-6，18：0和温度。这项研究表明，上升和非上升期间的主导海洋学条件如何调节假单胞菌的FA水平。