RUI: Influence of Environmental Factors on Migratory Behavior

定向和迁移是大多数国家的基本组成部分， 动物的生活史模式，使他们能够找到和 利用有利的环境条件， 捕食，并从事生殖和其他社会活动。 一个人的能力，以产生精确的时间运动 与高峰环境和社会条件相协调， 这在很大程度上取决于其处理和应对有关 来自其内部和外部的感官信息 环境 Sydlik博士将研究当地环境因素的作用 在马蹄蟹的迁徙运动中。 这些动物是 这是一项理想的研究，因为（1）主要的环境因素 （月球和潮汐周期，一天中的时间），影响时间 （2）大量的动物， 短距离重复迁移，确保可用性 研究，（3）我们有广泛的知识，他们的感官 （4）Sydlik博士的初步工作表明， 超声波跟踪可以用来收集精确的数据 在迁移过程中进入和离开海岸的时间和路径。 来自超声波和环境发射器的数据， 动物，和从一个淹没的独立的环境- 监测单位，将收集和处理的计算机 被安置在靠近海岸的一辆货车中。 使用这些数据，博士。 Sydlik将评估水深、涌浪、 方向、盐度、温度、压力和流速 动物的壳刺激和引导迁徙 这些长寿的海洋无脊椎动物的行为。

Orientation and migration are essential components of most animals' life-history patterns, permitting them to find and exploit favorable environmental conditions, locate and capture prey, and engage in reproductive and other social activities. An individual's ability to produce precisely timed movements coordinated with peak environmental and social conditions must depend heavily on its capacity to process and respond to relevant sensory information from both its internal and external environment. Dr. Sydlik will examine the role of local environmental factors in the migratory movements of horseshoe crabs. These animals are ideal for such a study because (1) major environmental factors (lunar and tidal cycles, time of day) that influence the timing of their migrations are known, (2) large numbers of animals migrate repeatedly over short distances, ensuring availability for study, (3) we have extensive knowledge of their sensory systems, and (4) Dr. Sydlik's preliminary work indicates that ultrasonic tracking can be used to collect precise data on the timing and paths taken into and away from shore during migration. Data from ultrasonic and environmental transmitters carried by the animals, and from a submerged stand-alone environmental- monitoring unit, will be collected and processed by computers housed in a van located near the shore. Using these data, Dr. Sydlik will evaluate the influences of water depth, surge direction, salinity, temperature, pressure, and flow rate over the animals' shells in stimulating and directing the migratory behavior of these long-lived marine invertebrates.