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Sun compass integration of skylight cues in migratory monarch butterflies.

Heinze, Stanley LU and Reppert, Steven M (2011) In Neuron 69(2). p.345-358
Abstract
Migrating monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate from eastern North America to their overwintering grounds in central Mexico. Here we describe the neuronal layout of those aspects of the butterfly's central complex likely to establish part of the internal sun compass and find them highly homologous to those of the desert locust. Intracellular recordings from neurons in the monarch sun compass network reveal responses tuned to specific E-vector angles of polarized light, as well as azimuth-dependent responses to unpolarized light, independent of spectral composition. The neural responses to these two stimuli in individual neurons are mediated through different regions of the compound eye.... (More)
Migrating monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate from eastern North America to their overwintering grounds in central Mexico. Here we describe the neuronal layout of those aspects of the butterfly's central complex likely to establish part of the internal sun compass and find them highly homologous to those of the desert locust. Intracellular recordings from neurons in the monarch sun compass network reveal responses tuned to specific E-vector angles of polarized light, as well as azimuth-dependent responses to unpolarized light, independent of spectral composition. The neural responses to these two stimuli in individual neurons are mediated through different regions of the compound eye. Moreover, these dual responses are integrated to create a consistent representation of skylight cues in the sun compass throughout the day. The results advance our understanding of how ambiguous sensory signals are processed by the brain to elicit a robust behavioral response. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Neuron
volume
69
issue
2
pages
345 - 358
publisher
Cell Press
external identifiers
  • scopus:78751679931
ISSN
0896-6273
DOI
10.1016/j.neuron.2010.12.025
language
English
LU publication?
no
id
41689fab-afc5-472a-a4e1-7323d573e4a3 (old id 4464503)
date added to LUP
2014-06-16 09:45:19
date last changed
2017-11-05 03:00:43
@article{41689fab-afc5-472a-a4e1-7323d573e4a3,
  abstract     = {Migrating monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate from eastern North America to their overwintering grounds in central Mexico. Here we describe the neuronal layout of those aspects of the butterfly's central complex likely to establish part of the internal sun compass and find them highly homologous to those of the desert locust. Intracellular recordings from neurons in the monarch sun compass network reveal responses tuned to specific E-vector angles of polarized light, as well as azimuth-dependent responses to unpolarized light, independent of spectral composition. The neural responses to these two stimuli in individual neurons are mediated through different regions of the compound eye. Moreover, these dual responses are integrated to create a consistent representation of skylight cues in the sun compass throughout the day. The results advance our understanding of how ambiguous sensory signals are processed by the brain to elicit a robust behavioral response.},
  author       = {Heinze, Stanley and Reppert, Steven M},
  issn         = {0896-6273},
  language     = {eng},
  number       = {2},
  pages        = {345--358},
  publisher    = {Cell Press},
  series       = {Neuron},
  title        = {Sun compass integration of skylight cues in migratory monarch butterflies.},
  url          = {http://dx.doi.org/10.1016/j.neuron.2010.12.025},
  volume       = {69},
  year         = {2011},
}