Application of radiotelemetry to the survey of acorn dispersal byApodemus mice |
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Authors: | Koichi Soné Aki Kohno |
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Institution: | (1) Tama Forest Science Garden, Hachioji, Tokyo, 193, Japan;(2) Faculty of Sciences, Toho University, 274 Funabashi, Chiba, Japan;(3) Present address: Faculty of Agriculture, Kagoshima University, 890 Kagoshima, Japan |
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Abstract: | We examined the applicability of radiotelemetry to studies of acorn dispersal byApodemus mice and compared its efficiency with the of this spool-and-line method. Installation of a transmitter (2.2 g) onto acorns
did not interfere with the transporting and feeding behavior of the mice. We were able to detect all transmitter-installed
acorns and follow the daily changes in the sites in which they were hoarded, while we missed 59% of the spool-tied acorns
due to mice breaking the threads. Mice carried transmitter-installed acorns farther than spool-tied ones. The radiotelemetry
method is superior to the spool-and-line method and useful for the study of hoarding behavior in rodents. |
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Keywords: | acorn dispersal Apodemus mice radiotelemetry spool-and-line method |
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