title: Vocalization of echolocation-like pulses for interindividual interaction in horseshoe bats (Rhinolophus ferrumequinum).
abstract: Although much is known about the echolocation of horseshoe bats (Rhinolophus spp.), little is known about the characteristics and function of their communication calls. This study focused on a stereotyped behavior of a bat approaching a companion animal in the colony, and examined their interaction and vocalization during this behavior. The bats emit echolocation-like vocalizations when approaching each other and these vocalizations contain a "buildup" pulse sequence, in which the frequency of the pulse increases gradually to normal echolocation pulse frequencies. The results suggest that the echolocation-like pulses serve an important role in communication within the colony.
authors.affiliation: Department of Biomedical Information, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe City, Kyoto, 610-0321, Japan. kkobayas@mail.doshisha.ac.jp
authors.forename: Kohta I
authors.initials: KI
authors.lastname: Kobayasi
authors.forename: Shizuko
authors.initials: S
authors.lastname: Hiryu
authors.forename: Ryota
authors.initials: R
authors.lastname: Shimozawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Riquimaroux
mesh_terms: D000818:Animals; D001307:Auditory Perception; D001522:Behavior, Animal; D002685:Chiroptera / Q000502:physiology*; D004455:Echolocation; D008297:Male; D012919:Social Behavior; D013018:Sound Spectrography; D013239:Stereotyped Behavior; D013997:Time Factors; D014828:Vocalization, Animal