کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
2194179 1098422 2009 10 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Encephalization of Bathyergidae and comparison of brain structure volumes between the Zambian mole-rat Fukomys anselli and the giant mole-rat Fukomys mechowii
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Encephalization of Bathyergidae and comparison of brain structure volumes between the Zambian mole-rat Fukomys anselli and the giant mole-rat Fukomys mechowii
چکیده انگلیسی

Encephalization indices were calculated for Fukomys anselli and Fukomys mechowii by using interspecific allometric lines of Tenrecinae (recent Eutheria with the smallest brains) and average Rodentia to compare brain sizes independent of body size influence. These were contrasted with corresponding indices of other Bathyergidae and additionally with other rodents. The Bathyergidae species had indices within the variation of some Cricetidae and Muridae and thus do not differ in encephalization. F. anselli, however, had a clearly higher encephalization index than the sister species F. mechowii. The sizes of diverse structures were measured in the brains of these two species by help of the serial section method. No differences were found in relative composition. The lower encephalization of F. mechowii is discussed as a special phenomenon of gigantism during phylogenetic radiation which similarly was documented for other forms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mammalian Biology - Zeitschrift für Säugetierkunde - Volume 74, Issue 4, July 2009, Pages 298–307
نویسندگان
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