Melatonin reduces migratory restlessness in Sylvia warblers during autumnal migration
نویسندگان
چکیده
منابع مشابه
Carbohydrate absorption by blackcap warblers (Sylvia atricapilla) changes during migratory refuelling stopovers.
Passerine birds migrating long distances arrive at stopover sites to refuel having lost as much as 50% of their initial body mass (mb), including significant losses to digestive organs that may serve as a reservoir of protein catabolised for fuel during flight. Birds newly arrived at a stopover show slow or no mb gain during the initial 2-3 days of a stopover, which suggests that energy assimil...
متن کاملMigratory Restlessness in an Equatorial Nonmigratory Bird
The urge of captive birds to migrate manifests itself in seasonally occurring restlessness, termed "Zugunruhe." Key insights into migration and an endogenous basis of behavior are based on Zugunruhe of migrants but have scarcely been tested in nonmigratory birds. We recorded Zugunruhe of African stonechats, small passerine birds that defend year-round territories and have diverged from northern...
متن کاملBone collagen and muscle dC in relation to the timing of the migration of Garden Warblers Sylvia borin during return migration from Africa
In migratory birds, seasonal factors interacting at different stages of the annual cycle can influence individual life histories. These have been well documented for Nearctic-Neotropical birds. Yet, seasonal interactions between the wintering, migration, and breeding periods have not been demonstrated for Palearctic-African passerine migrants. We tested whether variation in longand shortterm di...
متن کاملGhrelin affects stopover decisions and food intake in a long-distance migrant.
Billions of birds migrate long distances to either reach breeding areas or to spend the winter at more benign places. On migration, most passerines frequently stop over to rest and replenish their fuel reserves. To date, we know little regarding how they decide that they are ready to continue their journey. What physiological signals tell a bird's brain that its fuel reserves are sufficient to ...
متن کاملCryptochrome expression in the eye of migratory birds depends on their migratory status.
Most passerine birds are nocturnal migrants. When kept in captivity during the migratory periods, these species show a migratory restlessness, or Zugunruhe. Recent studies on Sylvia warblers have shown that Zugunruhe is an excellent proxy of migratory disposition. Passerine birds can use the Earth's geomagnetic field as a compass to keep their course during their migratory flight. Among the can...
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ژورنال
عنوان ژورنال: Frontiers in Zoology
سال: 2013
ISSN: 1742-9994
DOI: 10.1186/1742-9994-10-79