کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4312335 1612936 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Annual life-history dependent seasonal differences in neural activity of the olfactory system between non-migratory and migratory songbirds
ترجمه فارسی عنوان
اختلاف فصلی سالانه در زندگی سالم در فعالیت عصبی سیستم بویایی بین پرندگان نژادی غیر مهاجر و مهاجر
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
چکیده انگلیسی


• Compares seasonal change in neural activity of olfactory system in songbirds.
• Seasonal ZENK activation differs between non-migratory and migratory birds.
• Birds during the post-breeding state have highest ZENK activation.
• Seasonal plasticity in neural activity was linked with annual life-history states.
• Results possibly invoke adaptive differences in neural activity of sensory systems.

Present study investigated seasonal plasticity in neural activity of the olfactory system, and assessed whether this was influenced by differences in seasonal life-history states (LHSs) between the non-migratory and migratory birds. Brains of non-migratory Indian weaver birds and migratory redheaded buntings were processed for ZENK immunohistochemistry, a marker of neuronal activation, at the times of equinoxes (March, September) and solstices (June, December), which correspond with the periods of different seasonal LHSs during the year. Immunoreactivity was quantified in brain regions comprising the olfactory system viz. olfactory bulb (OB), anterior olfactory nucleus (AON), prepiriform cortex (CPP), lateral olfactory tract (LOT) and olfactory cortex (piriform cortex, CPI; lateral olfactory cortex, LOC). In weaver birds, ZENK-like immunoreactive (ZENK-lir) cells were significantly higher in all the brain areas during post-breeding season (September) than during the other seasons; OBs had higher neuronal activity in the breeding season (June), however. A similar neural activity pattern but at enhanced levels was found in migratory buntings almost all the year. These results for the first time show LHS-associated differences in the seasonal plasticity of a sensory system between the non-migratory and migratory songbirds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Brain Research - Volume 296, 1 January 2016, Pages 233–239
نویسندگان
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