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DNA元编码,多样性分区和零模型揭示了地中海的季节性食物专业化机制

Daniel A Velarde-Garcéz^1,2,3, Vanessa A Mata^1,3, Pedro Beja^1,3,4

¹CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, Vairão, Portugal.

Molecular ecology

|December 21, 2023

概括

撒丁岛在冬季扩大了他们的饮食,显示了的扩大. 这种饮食转变是由个体的食策略驱动的,而不是资源的分割,这表明竞争会影响食物获取.

科学领域:

生态生态学生态生态学
行为生态学行为生态学
人口生态学人口生态学

背景情况:

最佳食理论 (OFT) 建议在粮食短缺期间进行利基扩张.
利基变化假设 (NVH) 建议通过个人之间的差异化来扩大利基,以减少竞争.

研究的目的:

为了测试Sardinian Warblers在驾驶位变化中的OFT和NVH.
通过饮食数据调查利基扩张的机制.

主要方法:

在一年内对撒丁岛的饮食进行DNA元编码分析.
应用零模型和β多样性分解来评估饮食差异化.

主要成果:

鱼的饮食因季节而异,果在夏季/秋季占主导地位,关节动物全年普遍存在.
人口利基宽度在春夏专业化期间最窄,在冬季扩大.
冬季个体之间的差异化增加与饮食丰富性有关,而不是资源分割.

结论:

个人食策略,机会主义或专业化,解释了利基的变化,而不是增加了食物分区.
精益时期的竞争可能会导致对资源的差异性访问,与OFT而不是NVH预测保持一致.

关键词:

个人的专业化,个人的专业化.利基区分的分区是什么最优的食理论最优的食理论替代品替代品替代品替代品丰富的财富,丰富的财富.

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