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Spatial and temporal patterns in the feeding behavior of a fiddler crab

机译：提琴蟹摄食行为的时空格局

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摘要

Fiddler crabs consume the surficial micro-phytobenthos around their burrows during low tide. We studied the spatial and temporal feeding patterns in the species Uca uruguayensis by using sequences of digital pictures of feeding pellets accumulation. Data from 61 crabs, feeding without the interference of neighbors, were fitted to different models using Maximum Likelihood and Bayesian approaches. Initial feeding location was independent from the emergence location, and then, crabs continued holding a main feeding direction (clockwise or counterclockwise), suggesting a systematic mechanism that may avoid feeding over already processed sediment. Crabs used at least half of their potential feeding area, but these areas were heterogeneous. Both sexes developed similar feeding areas; however, females were faster and needed less time to feed than males, suggesting that males are time restricted. Our work also highlights the importance of incorporating other underlying mechanisms of the behavior of species into the study of feeding strategies.
机译：提琴蟹在退潮时会在其洞穴周围消耗表层的微型植物底栖动物。我们使用饲喂颗粒堆积的数字图片序列研究了乌卡乌拉圭种中的时空饲喂方式。使用最大似然法和贝叶斯方法将来自61只螃蟹的数据进行了喂养，而没有邻居的干扰。最初的喂食位置与出苗位置无关，然后，螃蟹继续保持主要的喂食方向（顺时针或逆时针），这表明系统的机制可以避免喂食已经处理过的沉积物。螃蟹至少使用了其潜在觅食面积的一半，但这些面积是异质的。男女都有相似的喂养区域；但是，雌性比雄性更快，需要的喂养时间更少，这表明雄性有时间限制。我们的工作还强调了将物种行为的其他潜在机制纳入进食策略研究的重要性。

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  • 来源
    《Marine biology》 |2013年第4期|1001-1013|共13页
  • 作者

    Agustina di Virgilio; Pablo D. Ribeiro;

  • 作者单位

    Laboratorio Ecotono, INIBIOMA-CONICET, Universidad Nacional del Comahue, Quintral 1250, R8400FRF, San Carlos de Bariloche, Rio Negro, Argentina;

    Institute de Investigaciones Marinas y Costeras (IIMyC),CONICET-Universidad Nacional de Mar del Plata,Mar del Plata, Argentina,Grupo de Investigation y Educacion en Temas Ambientales (GrIETA), Mar del Plata, Argentina;

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