Discrimination of wingbeat motion by bats, correlated with echolocation sound pattern

Citation

Material Information

Title:
Discrimination of wingbeat motion by bats, correlated with echolocation sound pattern
Series Title:
Journal of Comparative Physiology A
Creator:
Roverud, Roald C.
Nitsche, Volker
Neuweiler, Gerhard
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Constant Frequency ( local )
Frequency Modulation ( local )
Bats ( local )
Echolocation Sound Pattern ( local )
Wingbeats ( local )
Discrimination ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Bats of the species Rhinolophus rouxi, Hipposideros lankadiva and Eptesicus fuscus were trained to discriminate between two simultaneously presented artificial insect wingbeat targets moving at different wingbeat rates. During the discrimination trials, R. rouxi, H. lankadiva and E. fuscus emitted long-CF/FM, short-CF/FM and FM echolocation sounds respectively. R. rouxi, H. lankadivaand E. fuscus were able to discriminate a difference in wingbeat rate of 2.7 Hz, 9.2 Hz and 15.8 Hz, respectively, between two simultaneously presented targets at an absolute wingbeat rate of 60 Hz, using a criterion of 75% correct responses. The performance of the different bat species is correlated with the echolocation signal design used by each species, particularly with the presence and relative duration of a narrowband component preceding a broadband FM component. These results provide behavioral evidence supporting the hypothesis that bats that use CF/FM echolocation sounds have adaptations for the perception of insect wingbeat motion and that long-CF/FM species are more specialized for this task than short-CF/FM species.
Original Version:
Journal of Comparative Physiology A, Vol. 168, no. 2 (1991-02).

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
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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