کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2427435 1553189 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The seasonal hippocampus of food-storing birds
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
The seasonal hippocampus of food-storing birds
چکیده انگلیسی

Food storing is seasonal in birds like chickadees, nuthatches and jays, occurring at high levels in fall and winter and low levels in spring and summer. Memory for cache sites is hippocampus dependent in chickadees and both the recruitment of new neurons into the hippocampus and the total size of the hippocampus change seasonally. Unlike seasonal change in the vocal control nuclei of songbirds, however, change in the hippocampus appears not to be controlled by photoperiod. The annual timing of hippocampal neuronal recruitment and change in hippocampal size is quite variable, reaching maximum levels at different times of year in different studies. The amount of food-storing activity by chickadees is known to be influenced by flock dominance structure, energy balance, food availability, and other seasonally varying factors. The variable timing of seasonal change in the hippocampus may indicate that the hippocampus of food-storing birds changes annually in response to change in the intensity of food storing behaviour itself.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Processes - Volume 80, Issue 3, March 2009, Pages 334–338
نویسندگان
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