Abstract Changes in environmental conditions play an important role in essential biological processes such as reproduction, which is partially driven by an organism's diet. Here, we evaluate spatio-temporal variations in the bioenergetic reserves (lipids and fatty acids) of the fishery resource Concholepas concholepas (Loco), a prominent benthic carnivorous gastropod. We used data from summer (January) and winter (July) from two coastal localities that shown contrasting environmental conditions in central Chile (Quintay and Las Cruces). The results indicate that there is a correlation between the fatty acid profiles and the interactions between seasonality and locality. This was particularly evident among the fatty acid concentrations of docosahexaenoic (DHA, C22:6n-3), eicosapentaenoic (EPA, C20:5n-3) and arachidonic (ARA, C20:4n-6) acids, which were high in winter, in both localities. Contrastingly, palmitic (C16:0) and stearic (C18:0) acids were present among all comparisons at stable concentrations. These findings suggest an influence of environmental conditions on the availability and quality of the prey of C. concholepas, in both localities. Moreover, the high concentration of essential fatty acids during winter, could suggest an adaptive physiological response, to ensure reproductive success. This knowledge is indispensable to improve regulatory measures for the extraction periods of marine resources, towards a more sustainable fishery, in the Humboldt Current System.

中文翻译：

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Concholepas concholepas (Gastropoda: Muricidae) 在对比洪堡海流系统的沿海环境中生物能量储备的时间变化

摘要 环境条件的变化在重要的生物过程中起着重要作用，例如繁殖，部分由生物体的饮食驱动。在这里，我们评估了渔业资源 Concholepas concholepas (Loco) 的生物能量储备（脂质和脂肪酸）的时空变化，这是一种突出的底栖肉食性腹足动物。我们使用了来自智利中部（昆泰和拉斯克鲁塞斯）两个沿海地区的夏季（1 月）和冬季（7 月）的数据，这些地区显示了对比鲜明的环境条件。结果表明脂肪酸谱与季节性和地点之间的相互作用之间存在相关性。这在二十二碳六烯酸 (DHA, C22:6n-3)、二十碳五烯酸 (EPA, C20:5n-3) 和花生四烯酸 (ARA, C20:4n-6) 的脂肪酸浓度中尤为明显，这两个地方的冬季都很高。相比之下，棕榈酸 (C16:0) 和硬脂酸 (C18:0) 以稳定浓度存在于所有比较中。这些发现表明，环境条件对两个地方的 C. concholepas 猎物的可用性和质量都有影响。此外，冬季高浓度的必需脂肪酸可能表明适应性生理反应，以确保繁殖成功。这些知识对于改进洪堡海流系统中海洋资源开采期的监管措施，以实现更可持续的渔业是必不可少的。这些发现表明，环境条件对两个地方的 C. concholepas 猎物的可用性和质量都有影响。此外，冬季高浓度的必需脂肪酸可能表明适应性生理反应，以确保繁殖成功。这些知识对于改进洪堡海流系统中海洋资源开采期的监管措施，以实现更可持续的渔业是必不可少的。这些发现表明，环境条件对两个地方的 C. concholepas 猎物的可用性和质量都有影响。此外，冬季高浓度的必需脂肪酸可能表明适应性生理反应，以确保繁殖成功。这些知识对于改进洪堡海流系统中海洋资源开采期的监管措施，以实现更可持续的渔业是必不可少的。