Institute of Environmental Sustainability, Swansea University, , Singleton Park, Swansea SA2 8PP, UK.
J R Soc Interface. 2010 Sep 6;7(50):1319-27. doi: 10.1098/rsif.2010.0009. Epub 2010 Mar 17.
Long distance migration occurs in a wide variety of taxa including birds, insects, fishes, mammals and reptiles. Here, we provide evidence for a new paradigm for the determinants of migration destination. As adults, sea turtles show fidelity to their natal nesting areas and then at the end of the breeding season may migrate to distant foraging sites. For a major rookery in the Mediterranean, we simulated hatchling drift by releasing 288 000 numerical particles in an area close to the nesting beaches. We show that the pattern of adult dispersion from the breeding area reflects the extent of passive dispersion that would be experienced by hatchlings. Hence, the prevailing oceanography around nesting areas may be crucial to the selection of foraging sites used by adult sea turtles. This environmental forcing may allow the rapid evolution of new migration destinations if ocean currents alter with climate change.
长距离迁徙发生在包括鸟类、昆虫、鱼类、哺乳动物和爬行动物在内的广泛的分类群中。在这里，我们提供了一个新的范例，说明决定迁徙目的地的因素。作为成年人，海龟对其出生地的筑巢区表现出忠诚，然后在繁殖季节结束时可能会迁移到遥远的觅食地。对于地中海的一个主要的繁殖地，我们通过在靠近筑巢海滩的区域释放 288000 个数值粒子来模拟幼龟的漂流。我们表明，从繁殖区扩散的成年个体模式反映了幼龟可能经历的被动扩散的程度。因此，筑巢区周围的盛行海洋学可能对成年海龟使用的觅食地的选择至关重要。如果洋流随气候变化而改变，这种环境压力可能会导致新的迁徙目的地的快速进化。
