Sensory basis of lepidopteran migration: focus on the monarch butterfly
Department of Neurobiology; Reppert Lab
Neuroscience and Neurobiology
In response to seasonal habitats, migratory lepidopterans, exemplified by the monarch butterfly, have evolved migration to deal with dynamic conditions. During migration, monarchs use orientation mechanisms, exploiting a time-compensated sun compass and a light-sensitive inclination magnetic compass to facilitate fall migration south. The sun compass is bidirectional with overwintering coldness triggering the change in orientation direction for remigration northward in the spring. The timing of the remigration and milkweed emergence in the southern US have co-evolved for propagation of the migration. Current research is uncovering the anatomical and molecular substrates that underlie migratory-relevant sensory mechanisms with the antennae being critical components. Orientation mechanisms may be detrimentally affected by environmental factors such as climate change and sensory interference from human-generated sources.
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Citation: Curr Opin Neurobiol. 2015 Oct;34:20-8. doi: 10.1016/j.conb.2015.01.009. Epub 2015 Jan 25. Link to article on publisher's site
Guerra, Patrick A. and Reppert, Steven M., "Sensory basis of lepidopteran migration: focus on the monarch butterfly" (2015). Neurobiology Publications and Presentations. 161.