Cribriform plate of ethmoid, olfactory bulb and olfactory acuity in forty species of bats

Citation

Material Information

Title:
Cribriform plate of ethmoid, olfactory bulb and olfactory acuity in forty species of bats
Series Title:
Journal of Morphology
Creator:
Bhatnagar, Kunwar P.
Kallen, Frank C.
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Cribriform Plate Of The Ethmoid ( local )
Olfactory Bulb ( local )
Olfactory Acuity ( local )
Bats ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Relationships between the cribriform plate of the ethmoid, the olfactory bulb, and olfactory acuity were explored using material from 13 of the 17 bat families. All megachiropteran cribriform plates were entirely perforated. In contrast, microchiropteran plates showed distinct perforated portions dorsally and nonperforated portions ventrally. The plates of frugivorous species had more foramina than those of insectivorous ones. Bats with mixed dietary habits were intermediate. Our data suggest that the Chilonycterinae were originally frugivorous, and have only secondarily reverted to an insectivorous diet. Trend analyses show that wherever dietary preference appears to favor a more acute sense of smell, bulb diameter tends to be larger. In general, frugivorous bats tend to have bulbs exceeding 2 mm in diameter; insectivorous bats tend to have bulb diameters of 2 mm or less. The number of foramina in the plates and total cribriform plate area tends to increase as a function of bulb area, but the plate area the foramina occupied increases as a function of bulb volume. The ratio of the size of the bulb to the size of the cerebral hemisphere does not predict olfactory acuity in bats.
Original Version:
Journal of Morphology, Vol. 142, no. 1 (1974-01).

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University of South Florida Library
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University of South Florida
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This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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