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dc.contributor.authorGuerra, Patrick A.
dc.contributor.authorReppert, Steven M.
dc.date2022-08-11T08:08:22.000
dc.date.accessioned2022-08-23T15:52:58Z
dc.date.available2022-08-23T15:52:58Z
dc.date.issued2013-03-04
dc.date.submitted2013-07-08
dc.identifier.citationCurr Biol. 2013 Mar 4;23(5):419-23. doi: 10.1016/j.cub.2013.01.052. <a href="http://dx.doi.org/10.1016/j.cub.2013.01.052">Link to article on publisher's site</a>
dc.identifier.issn0960-9822 (Linking)
dc.identifier.doi10.1016/j.cub.2013.01.052
dc.identifier.pmid23434279
dc.identifier.urihttp://hdl.handle.net/20.500.14038/29258
dc.description.abstractEach fall, eastern North American monarch butterflies (Danaus plexippus) migrate from their northern range to their overwintering grounds in central Mexico [1-3]. Fall migrants are in reproductive diapause, and they use a time-compensated sun compass to navigate during the long journey south [4-6]. Eye-sensed directional cues from the daylight sky (e.g., the horizontal or azimuthal position of the sun) are integrated in the sun compass in the midbrain central complex region [7, 8]. Sun compass output is time compensated by circadian clocks in the antennae so that fall migrants can maintain a fixed flight direction south [9, 10]. In the spring, the same migrants remigrate northward to the southern United States to initiate the northern leg of the migration cycle. Here we show that spring remigrants also use an antenna-dependent time-compensated sun compass to direct their northward flight. Remarkably, fall migrants prematurely exposed to overwintering-like coldness reverse their flight orientation to the north. The temperature microenvironment at the overwintering site is essential for successful completion of the migration cycle, because without cold exposure, aged migrants continue to orient south. Our discovery that coldness triggers the northward flight direction in spring remigrants solves one of the long-standing mysteries of the monarch migration.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=23434279&dopt=Abstract">Link to Article in PubMed</a>
dc.relation.urlhttp://dx.doi.org/10.1016/j.cub.2013.01.052
dc.subjectBehavioral Neurobiology
dc.subjectNeuroscience and Neurobiology
dc.titleColdness triggers northward flight in remigrant monarch butterflies
dc.typeJournal Article
dc.source.journaltitleCurrent biology : CB
dc.source.volume23
dc.source.issue5
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/faculty_pubs/149
dc.identifier.contextkey4295169
html.description.abstract<p>Each fall, eastern North American monarch butterflies (Danaus plexippus) migrate from their northern range to their overwintering grounds in central Mexico [1-3]. Fall migrants are in reproductive diapause, and they use a time-compensated sun compass to navigate during the long journey south [4-6]. Eye-sensed directional cues from the daylight sky (e.g., the horizontal or azimuthal position of the sun) are integrated in the sun compass in the midbrain central complex region [7, 8]. Sun compass output is time compensated by circadian clocks in the antennae so that fall migrants can maintain a fixed flight direction south [9, 10]. In the spring, the same migrants remigrate northward to the southern United States to initiate the northern leg of the migration cycle. Here we show that spring remigrants also use an antenna-dependent time-compensated sun compass to direct their northward flight. Remarkably, fall migrants prematurely exposed to overwintering-like coldness reverse their flight orientation to the north. The temperature microenvironment at the overwintering site is essential for successful completion of the migration cycle, because without cold exposure, aged migrants continue to orient south. Our discovery that coldness triggers the northward flight direction in spring remigrants solves one of the long-standing mysteries of the monarch migration.</p>
dc.identifier.submissionpathfaculty_pubs/149
dc.contributor.departmentReppert Lab
dc.contributor.departmentNeurobiology
dc.source.pages419-23


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