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Ikeda Y, Jiang T, Oh H, Csorba G, Motokawa M. Geographic variations of skull morphology in the Rhinolophus ferrumequinum species complex (Mammalia: Chiroptera). ZOOL ANZ 2020. [DOI: 10.1016/j.jcz.2020.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Petersen H, Finger N, Bastian A, Jacobs D. The Behaviour and Vocalisations of Captive Geoffroy's Horseshoe Bats, Rhinolophus clivosus (Chiroptera: Rhinolophidae). ACTA CHIROPTEROLOGICA 2019. [DOI: 10.3161/15081109acc2018.20.2.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Hana Petersen
- Animal Evolution and Systematics Group, Department of Biological Sciences, University of Cape Town, Rondebosch, Cape Town, 7700, South Africa
| | - Nikita Finger
- Animal Evolution and Systematics Group, Department of Biological Sciences, University of Cape Town, Rondebosch, Cape Town, 7700, South Africa
| | - Anna Bastian
- School of Life Sciences, University of KwaZulu-Natal, Durban 4001, KwaZulu-Natal, South Africa
| | - David Jacobs
- Animal Evolution and Systematics Group, Department of Biological Sciences, University of Cape Town, Rondebosch, Cape Town, 7700, South Africa
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Hase K, Kadoya Y, Maitani Y, Miyamoto T, Kobayasi KI, Hiryu S. Bats enhance their call identities to solve the cocktail party problem. Commun Biol 2018; 1:39. [PMID: 30271924 PMCID: PMC6123623 DOI: 10.1038/s42003-018-0045-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 04/04/2018] [Indexed: 11/21/2022] Open
Abstract
Echolocating bats need to solve the problem of signal jamming by conspecifics when they are in a group. However, while several mechanisms have been suggested, it remains unclear how bats avoid confusion between their own echoes and interfering sounds in a complex acoustic environment. Here, we fixed on-board microphones onto individual frequency-modulating bats flying in groups. We found that group members broaden the inter-individual differences in the terminal frequencies of pulses, thereby decreasing the similarity of pulses among individuals. To understand what features most affect similarity between pulses, we calculated the similarity of signals mimicking pulses. We found that the similarity between those artificial signals was decreased most by manipulation of terminal frequency. These results demonstrate that the signal jamming problem is solved by this simple strategy, which may be universally used by animals that use active sensing, such as echolocating bats and electric fish, thereby transcending species and sensory modalities.
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Affiliation(s)
- Kazuma Hase
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan.
- Research Fellow of Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan.
| | - Yukimi Kadoya
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Yosuke Maitani
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Takara Miyamoto
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Kohta I Kobayasi
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Shizuko Hiryu
- Faculty of Life and Medical Sciences, Doshisha University, 1-3 Tatara miyakodani, Kyotanabe, Kyoto, 610-0321, Japan.
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
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Xiao YH, Wang L, Hoyt JR, Jiang TL, Lin AQ, Feng J. Stereotypy and variability of social calls among clustering female big-footed myotis (Myotis macrodactylus). Zool Res 2018. [PMID: 29515093 PMCID: PMC5885389 DOI: 10.24272/j.issn.2095-8137.2018.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Echolocating bats have developed advanced auditory perception systems, predominantly using acoustic signaling to communicate with each other. They can emit a diverse range of social calls in complex behavioral contexts. This study examined the vocal repertoire of five pregnant big-footed myotis bats (Myotis macrodactylus). In the process of clustering, the last individual to return to the colony (LI) emitted social calls that correlated with behavior, as recorded on a PC-based digital recorder. These last individuals could emit 10 simple monosyllabic and 27 complex multisyllabic types of calls, constituting four types of syllables. The social calls were composed of highly stereotyped syllables, hierarchically organized by a common set of syllables. However, intra-specific variation was also found in the number of syllables, syllable order and patterns of syllable repetition across call renditions. Data were obtained to characterize the significant individual differences that existed in the maximum frequency and duration of calls. Time taken to return to the roost was negatively associated with the diversity of social calls. Our findings indicate that variability in social calls may be an effective strategy taken by individuals during reintegration into clusters of female M. macrodactylus.
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Affiliation(s)
- Yan-Hong Xiao
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun Jilin 130117, China.
| | - Lei Wang
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun Jilin 130117, China.
| | - Joseph R Hoyt
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz CA 95064, USA
| | - Ting-Lei Jiang
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun Jilin 130117, China.
| | - Ai-Qing Lin
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun Jilin 130117, China.
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun Jilin 130117, China. .,School of Animal Science & Technology, Jilin Agricultural University, Changchun Jilin 130118, China
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Lin HJ, Kanwal JS, Jiang TL, Liu Y, Feng J. Social and vocal behavior in adult greater tube-nosed bats (Murina leucogaster). ZOOLOGY 2015; 118:192-202. [DOI: 10.1016/j.zool.2014.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/22/2014] [Accepted: 12/31/2014] [Indexed: 10/23/2022]
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