[MARMAM] New "Ecology" Paper: "Ontogeny of long distance migration"
beckyscott130 at hotmail.com
Wed Oct 22 03:11:30 PDT 2014
Dear all, I would like to draw your attention to a paper now published in the Journal "Ecology" titled "Ontogeny of long distance migration" (see abstract below).I had previously circulated the "pre-print" of this article at the start of the year but the final version of this paper and various supporting supplementary material are now available on-line (http://www.esajournals.org/doi/full/10.1890/13-2164.1). If anyone can not access these and would like copies then please let me know.
Kind regards and I hope this is of interest to some of you, Rebecca ScottAbstract. The movements of some long-distance migrants are driven by innate compass headings that they follow on their first migrations (e.g., some birds and insects), while the movements of other first-time migrants are learned by following more experienced conspecifics (e.g., baleen whales). However, the overall roles of innate, learned, and social behaviors in driving migration goals in many taxa are poorly understood. To look for evidence of whether migration routes are innate or learned for sea turtles, here for 42 sites around the world we compare the migration routes of .400 satellite-tracked adults of multiple species of sea turtle with ;45 000 Lagrangian hatchling turtle drift scenarios. In so doing, we show that the migration routes of adult turtles are strongly related to hatchling drift patterns, implying that adult migration goals are learned through their past experiences dispersing with ocean currents. The diverse migration destinations of adults consistently reflected the diversity in sites they would have encountered as drifting hatchlings. Our findings reveal how a simple mechanism, juvenile passive drift, can explain the ontogeny of some of the longest migrations in the animal kingdom and ensure that adults find suitable foraging sites--
Dr Rebecca Scott
GEOMAR|Helmholtz Center for Ocean Research Kiel
Düsternbrooker Weg 20
+49 (0)431 600 4569
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