We analyzed how foraging area use changed in female Pipistrellus abramus during the breeding season. Radio tracking was used to follow 12 female P. abramus in Gyeongju City, from 2013 to 2015. We followed three bats in each of four stages of reproduction: early pregnancy, late pregnancy, lactation, and post-lactation. Our data showed that the usable area of a foraging site and the area that was actually used by bats in that site were different, and foraging site use also differed according to stage of reproduction. The bats used arable land the most, with use rates of 57%, 40.4%, and 73.2% during early pregnancy, late pregnancy, and lactation, respectively. Bats in a post-lactation state did not use arable areas at all and instead foraged over bodies of water 90% of the time. There was no difference in the use of each foraging environment between bats in early pregnancy and late pregnancy. However, bats in late pregnancy and those that were lactating did use arable land to different extents, and bats that were lactating and those that were post-lactation also used arable land and bodies of water to different extents.

Abstract
 1. Introduction
 2. Materials and Methods
  2.1. Study site
  2.2. Capture and selection of bats
  2.3. Radio tracking methods
  2.4. Data analysis and habitat classification
 3. Results and Discussion
 4. Conclusion
 REFERENCES

• Chul Un Chung(Department of Life Science, Dongguk University) Corresponding author
• Sung Chul Kim(Department of Life Science, Dongguk University)
• Young Shin Jeon(Department of Life Science, Dongguk University, Korea National Park)
• Sang Hoon Han(National Institute of Biological Resources)