Neurobiological interfaces connecting environmental change to monarch butterfly migration
Goforth KM, Shetty V, Giannuzzi MS and others. Current opinion in neurobiology, June 2026.
Go to the paper May need a subscription · doi:10.1016/j.conb.2026.103240
What this paper is about
A review of what is known about the nervous system behind monarch migration: how photoperiod, temperature, sunlight and the Earth’s magnetic field are sensed, and how those signals are turned into seasonal changes in reproduction and orientation.
It covers circadian clock signaling, seasonal remodeling of the blood-brain barrier, and the compass systems used for navigation, then asks how human-driven environmental change might interfere with each.
Summarised here from the abstract below. Not the authors’ words.
Abstract
Seasonal migration requires precise coordination between environmental sensing, neural processing, and physiological state. The monarch butterfly (Danaus plexippus) is a powerful model for understanding how neural systems generate adaptive responses across time and space. Migratory monarchs exhibit distinct seasonal reproductive traits and orientations, all regulated by environmental cues such as photoperiod, temperature, sunlight, and the Earth's magnetic field. Recent work has identified key neurobiological mechanisms underlying these processes, including circadian clock-dependent photoperiodic signaling, seasonal remodeling of the blood-brain barrier, and navigational compass systems guiding orientation. Here, we synthesize current knowledge and propose how anthropogenic stressors-artificial light at night, climate warming, and electromagnetic noise-could potentially disrupt the already threatened monarch migration by targeting key neurobiological interfaces that link environmental cues to migratory physiology and behavior. Understanding how these interfaces integrate environmental information will be critical for predicting the vulnerability of migratory monarchs, and possibly other insects, to rapid environmental change.
Abstract reproduced from the published paper, which is licensed CC BY. Copyright remains with the authors.
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Milkweed USA. (2026). Neurobiological interfaces connecting environmental change to monarch butterfly migration (listing). Retrieved DATE, from https://milkweedusa.com/research/neurobiological-interfaces-connecting-environmental-change-to-monarch-butterfly-migration-2026/
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title = {Neurobiological interfaces connecting environmental change to monarch butterfly migration (listing)},
author = {{Milkweed USA}},
year = {2026},
url = {https://milkweedusa.com/research/neurobiological-interfaces-connecting-environmental-change-to-monarch-butterfly-migration-2026/},
note = {Accessed DATE}
}