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1 February 2003 BULLAR VOLUME IN SUBTERRANEAN AND SURFACE-DWELLING CAVIOMORPH RODENTS
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Abstract

Bullar volume was estimated by external measurements for the subterranean genus Ctenomys (Rodentia, Ctenomyidae) and 24 species of surface-dwelling caviomorphs. Bullae were larger in Ctenomys than in caviomorphs. Larger bullar size may reflect good low-frequency audition and could be an adaptation for subterranean vocal communication. Estimated bullar volume of the Pliocene rodent Actenomys was intermediate between that of Ctenomys and surface-dwelling caviomorphs, in agreement with the presumed intermediate subterranean lifestyle of Actenomys.

Cristian Eric Schleich and Aldo Ivan Vassallo "BULLAR VOLUME IN SUBTERRANEAN AND SURFACE-DWELLING CAVIOMORPH RODENTS," Journal of Mammalogy 84(1), 185-189, (1 February 2003). https://doi.org/10.1644/1545-1542(2003)084<0185:BVISAS>2.0.CO;2
Accepted: 7 July 2002; Published: 1 February 2003
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