کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5922438 1571086 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sitting in the sun: Nest microhabitat affects incubation temperatures in seabirds
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Sitting in the sun: Nest microhabitat affects incubation temperatures in seabirds
چکیده انگلیسی


- Incubating birds endure a range of conditions while regulating egg temperatures.
- Incubation profiles were determined for four tropical seabird species.
- They varied significantly between species.
- Exposed nest sites were more strongly correlated to Tas.
- Habitats providing suitable nest microclimates will become increasingly important.

During incubation parent birds are committed to a nest site and endure a range of ambient conditions while regulating egg temperatures. Using artificial eggs containing temperature loggers alongside ambient temperature (Ta) controls, incubation profiles were determined for four tropical seabird species at different nest site locations. Camera traps were used for ad-hoc behavioural incubation observations. Eggs experienced a range of temperatures during incubation and varied significantly between species and in some cases between different microhabitats within a species. Such variation has important consequences in the phenotypic expression of both physical and physiological traits of chicks, and ultimately species fitness. Exposed nest sites were more strongly correlated to Tas. Camera traps highlighted different incubation strategies employed by these species that could be related to trade-offs in predator defence, feeding habits, and temperature regulation of eggs. This study provides evidence that species with similar breeding habits could be affected by environmental stressors in similar ways and that the differences shown in nest site selection could negate some of these effects. We propose that habitats providing suitable nest microclimates will become increasingly important for the successful breeding of seabird species, particularly under predicted climate change scenarios.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Thermal Biology - Volume 60, August 2016, Pages 149-154
نویسندگان
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