Abstract:
:Fall migratory monarch butterflies, tested for their directional responses to magnetic cues under three conditions, amagnetic, normal, and reversed magnetic fields, showed three distinct patterns. In the absence of a magnetic field, monarchs lacked directionality as a group. In the normal magnetic field, monarchs oriented to the southwest with a group pattern typical for migrants. When the horizontal component of the magnetic field was reversed, the butterflies oriented to the northeast. In contrast, nonmigratory monarchs lacked directionality in the normal magnetic field. The results are a direct demonstration of magnetic compass orientation in migratory insects.
journal_name
Proc Natl Acad Sci U S Aauthors
Etheredge JA,Perez SM,Taylor OR,Jander Rdoi
10.1073/pnas.96.24.13845keywords:
subject
Has Abstractpub_date
1999-11-23 00:00:00pages
13845-6issue
24eissn
0027-8424issn
1091-6490journal_volume
96pub_type
杂志文章,收录出版abstract::The c-rings of ATP synthases consist of individual c-subunits, all of which harbor a conserved motif of repetitive glycine residues (GxGxGxG) important for tight transmembrane α-helix packing. The c-ring stoichiometry determines the number of ions transferred during enzyme operation and has a direct impact on the ion-...
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更新日期:1997-02-04 00:00:00
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pub_type: 杂志文章
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更新日期:2008-06-24 00:00:00
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