Abstract
The functions of latrines have been well studied in gregarious or pair-living territorial ungulates, however, there are no field-based studies on latrine behaviour of solitary ungulates with monogamous pair territories. We investigated latrine behaviour of the Japanese serow (Capricornis crispus), a solitary and monogamous species. The spatial patterns of latrines did not coincide with the serows’ home range boundaries, and individuals of the same sex did not defecate at the same latrine (i.e., there was no countermarking), which suggests that latrines may not function as territorial marking. During the late-mating season, when males and females tend to live separately, the number of latrine visits by females increased and the probability of defecating was significantly higher, suggesting that females are the signallers, informing their oestrus status to males. Moreover, males also frequently visited the latrines, and latrine sniffing and overmarking were observed only during the late-mating season, suggesting that males may receive information about oestrus from the females’ faeces. Obtaining information on female oestrus directly is difficult for solitary species in which sexes live separately. Although future studies would be required to confirm this hypothesis, our study suggests that latrines may have evolved as female-to-male communication sites in the Japanese serow.
Funding source: Japan Society for the Promotion of Science
Award Identifier / Grant number: JP 23KK0277
Award Identifier / Grant number: JP22K14909
Acknowledgments
We thank Riki Ohuchi, Tomoki Nakagawa, Risako Miyaoka, Ayumi Katsumata, and Nozomu Ogawa for their help with the fieldwork. Fieldwork was facilitated by the non-profit organization Earthworm, and Masato Minami, Yuko Fukue, and other staff members helped with the fieldwork. Tsuyoshi Takeshita and staff at the Asama-Sanso Inn also facilitated the research for our field study. We thank Clio Reid, PhD, from Edanz (https://jp.edanz.com/ac) for editing a draft of this manuscript. We are grateful to anonymous reviewers for their helpful suggestions on previous drafts of the manuscript.
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Research ethics: All investigations were performed in accordance with the Ethics Committee for Animal Experiments, Mount Fuji Research Institute, Yamanashi Prefecture Government (ECAE-01-2013-2019). The study complies with current Japanese laws and adheres to the Mammal Society of Japan guidelines regarding animal welfare.
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Informed consent: Not applicable.
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Author contributions: HT contributed to the study conception and design. Material preparation and analysis were performed by HW and HT. Data collection was performed by HW, RY, and HT. The first draft of the manuscript was written by HT, and all co-authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors declare no conflict of interest.
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Research funding: This study was supported in part by JSPS KAKENHI (grant nos. JP22K14909, JP23KK0277).
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Data availability: All data analyzed during this study are included in this published article (and its Supplementary Material files).
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/mammalia-2024-0175).
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Articles in the same Issue
- Frontmatter
- Ecology
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- Environmental and landscape changes drive medium- to large-bodied mammal species composition across an Amazon-Cerrado ecotone amid the deforestation expansion
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- Discovering species-level homonyms in mammals using the Hesperomys database
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