After decades of study, much remains unknown about the foraging practices of the earliest inhabitants of Puerto Rico. Here, we present an analysis of the malacological assemblages of two neighboring and (partially) contemporary early sites from the island's southwest, finding intriguing intersite differences in shellfish collection practices. We attribute this diversity to differences in site type, chronology, or changes in local coastal configuration. This work not only provides insights into prehistoric Puerto Rican foraging dynamics but also demonstrates the importance of considering factors including intra-age chronology, site type, and changes in paleoenvironmental conditions when considering ancient foraging practices.

中文翻译：

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波多黎各西南部第一批居民的贝类采集实践：地点类型和古环境对栖息地选择的影响

经过数十年的研究，关于波多黎各最早居民的觅食行为仍有许多未知之处。在这里，我们对来自该岛西南部的两个相邻和（部分）当代早期遗址进行了分析，发现了贝类收集实践中有趣的遗址间差异。我们将这种多样性归因于场地类型、年表或当地沿海配置变化的差异。这项工作不仅提供了对史前波多黎各觅食动态的见解，而且还展示了在考虑古代觅食实践时考虑包括年龄内年表、遗址类型和古环境条件变化在内的因素的重要性。