1
|
Matsuyama H, Doi K, Agetsuma N, Suzuki M. Quantifying the direct and indirect effects of sika deer (Cervus nippon) on the prevalence of infection with Rickettsia in questing Haemaphysalis megaspinosa: A field experimental study. Ticks Tick Borne Dis 2023; 14:102201. [PMID: 37245254 DOI: 10.1016/j.ttbdis.2023.102201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 03/20/2023] [Accepted: 05/11/2023] [Indexed: 05/30/2023]
Abstract
Sika deer (Cervus nippon) are important hosts for all life stages of Haemaphysalis megaspinosa, a suspected Rickettsia vector. Because some Rickettsia are unlikely to be amplified by deer in Japan, the presence of deer may decrease the prevalence of Rickettsia infection in questing H. megaspinosa. As sika deer decrease vegetation cover and height and thereby indirectly cause changes in the abundance of other hosts, including reservoirs of Rickettsia, the prevalence of Rickettsia infection in questing ticks can also change. We investigated these possible effects of deer on the prevalence of infection with Rickettsia in questing ticks in a field experiment in which deer density was manipulated at three fenced sites: a deer enclosure (Deer-enclosed site); a deer enclosure where deer had been present until 2015 and only indirect effects remained (Indirect effect site); and a deer exclosure in place since 2004 (Deer-exclosed site). Density of questing nymphs and the prevalence of infection with Rickettsia sp. 1 in questing nymphs at each site were compared from 2018 to 2020. The nymph density at the Deer-exclosed site did not significantly differ from that at the Indirect effect site, suggesting that the deer herbivory did not affect the nymph density by reducing vegetation and increasing the abundance of other host mammals. However, the prevalence of infection with Rickettsia sp. 1 in questing nymphs was higher at the Deer-exclosed site than at the Deer-enclosed site, possibly because ticks utilized alternative hosts when deer were absent. The difference in Rickettsia sp. 1 prevalence between the Indirect effect and Deer-exclosed sites was comparable to that between the Indirect effect and Deer-enclosed sites, indicating that the indirect effects of deer were as strong as the direct effects. Examining the indirect effects of ecosystem engineers in the study of tick-borne diseases may be more important than previously recognized.
Collapse
Affiliation(s)
- Hiroyuki Matsuyama
- Graduate School of Frontier Sciences, The University of Tokyo, 5F Environmental Building, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan; Department of Infectious Diseases, Hokkaido Institute of Public Health, N19W12, Kita, Sapporo, Hokkaido 060-0819, Japan.
| | - Kandai Doi
- Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan.
| | - Naoki Agetsuma
- Field Science Center for Northern Biosphere, Hokkaido University, N9W9, Kita, Sapporo, Hokkaido 060-0809, Japan.
| | - Maki Suzuki
- Graduate School of Frontier Sciences, The University of Tokyo, 5F Environmental Building, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan.
| |
Collapse
|
2
|
Nakamura M, Terada C, Ito K, Matsui K, Niwa S, Ishihara M, Kenta T, Yoshikawa T, Kadoya T, Hiura T, Muraoka H, Ishida K, Agetsuma N, Nakamura R, Sakio H, Takagi M, Mori AS, Kimura MK, Kurokawa H, Enoki T, Seino T, Takashima A, Kobayashi H, Matsumoto K, Takahashi K, Tateno R, Yoshida T, Nakaji T, Maki M, Kobayashi K, Fukuzawa K, Hoshizaki K, Ohta K, Kobayashi K, Hasegawa M, Suzuki SN, Sakimoto M, Kitagawa Y, Sakai A, Kondo H, Ichie T, Kageyama K, Hieno A, Kato S, Otani T, Utsumi Y, Kume T, Homma K, Kishimoto K, Masaka K, Watanabe K, Toda M, Nagamatsu D, Miyazaki Y, Yamashita T, Tokuchi N. Evaluating the soil microbe community‐level physiological profile using
EcoPlate
and soil properties at 33 forest sites across Japan. Ecol Res 2022. [DOI: 10.1111/1440-1703.12293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masahiro Nakamura
- Wakayama Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Wakayama Japan
| | - Chisato Terada
- Wakayama Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Wakayama Japan
| | - Kinya Ito
- Wakayama Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Wakayama Japan
| | - Kazuaki Matsui
- Department of Civil and Environmental Engineering Kindai University Osaka Japan
| | | | - Masae Ishihara
- Field Science Education and Research Center, Kyoto University Kyoto Japan
| | - Tanaka Kenta
- Sugadaira Research Station, Mountain Science Center University of Tsukuba Ibaraki Japan
| | - Tetsuro Yoshikawa
- Biodiversity Division National Institute for Environmental Studies Tsukuba Ibaraki Japan
| | - Taku Kadoya
- Biodiversity Division National Institute for Environmental Studies Tsukuba Ibaraki Japan
| | - Tsutom Hiura
- Department of Ecosystem Studies The University of Tokyo Tokyo Japan
| | - Hiroyuki Muraoka
- River Basin Research Center, Gifu University, Tokai National Higher Education and Research System Gifu Japan
| | - Ken Ishida
- Amami Ecosystem Research Group Kagoshima Japan
| | - Naoki Agetsuma
- Tomakomai Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Sapporo Hokkaido Japan
| | - Ryosuke Nakamura
- Research Institute for Sustainable Humanosphere Kyoto University Uji Japan
| | - Hitoshi Sakio
- Sado Island Center for Ecological Sustainability Niigata University Niigata Japan
| | - Masahiro Takagi
- Faculty of Agriculture University of Miyazaki Miyazaki Japan
| | - Akira S. Mori
- Graduate School of Environment and Information Sciences, Yokohama National University Yokohama Kanagawa Japan
| | - Megumi K. Kimura
- Forest Tree Breeding Center, Forestry and Forest Products Research Institute Ibaraki Japan
| | - Hiroko Kurokawa
- Forestry and Forest Products Research Institute Ibaraki Japan
| | - Tsutomu Enoki
- Kasuya Resarch Forest, Faculty of Agriculture Kyushu University Fukuoka Japan
| | - Tatsuyuki Seino
- Yatsugatake Forest Station, Mountain Science Center University of Tsukuba Nagano Japan
| | - Atsushi Takashima
- Yona Field, Subtropical Field Scienece Center, Faculty of Agriculture University of the Ryukyus Okinawa Japan
| | | | | | | | - Ryunosuke Tateno
- Field Science Education and Research Center, Kyoto University Kyoto Japan
| | - Tomohiro Yoshida
- Faculty of Agriculture Tokyo University of Agriculture and Technology Tokyo Japan
| | - Tatsuro Nakaji
- Uryu Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Sapporo Hokkaido Japan
| | - Masayuki Maki
- Botanical Gardens, Tohoku University Sendai Miyagi Japan
| | | | - Karibu Fukuzawa
- Nakagawa Experimental Forest, Field Science Center for Northern Biosphere Hokkaido University Sapporo Hokkaido Japan
| | - Kazuhiko Hoshizaki
- Faculty of Bioresource Sciences Akita Prefectural University Akita Japan
| | - Kazuhide Ohta
- Faculty of Bioresource Sciences Akita Prefectural University Akita Japan
| | - Keito Kobayashi
- Graduate School of Agriculture, Kyoto University Kyoto Japan
- Kansai Research Center, Forestry and Forest Products Research Institute Kyoto Japan
| | | | - Satoshi N. Suzuki
- The University of Tokyo Hokkaido Forest, The University of Tokyo Furano Japan
| | - Michinori Sakimoto
- Field Science Education and Research Center, Kyoto University Kyoto Japan
| | - Yoichiro Kitagawa
- Field Science Education and Research Center, Kyoto University Kyoto Japan
| | - Akiko Sakai
- Graduate School of Environment and Information Sciences, Yokohama National University Yokohama Kanagawa Japan
| | - Hirofumi Kondo
- Graduate School of Environment and Information Sciences, Yokohama National University Yokohama Kanagawa Japan
| | - Tomoaki Ichie
- Faculty of Agriculture and Marine Science Graduate School of Integrated Arts and Sciences, Kochi University Kochi Kochi Japan
| | - Koji Kageyama
- River Basin Research Center, Gifu University, Tokai National Higher Education and Research System Gifu Japan
| | - Ayaka Hieno
- River Basin Research Center, Gifu University, Tokai National Higher Education and Research System Gifu Japan
| | - Shogo Kato
- Faculty of Applied Biological Sciences Gifu University, Tokai National Higher Education and Research System Gifu Japan
| | - Tatsuya Otani
- Shikoku Research Center, Forestry and Forest Products Research Institute Kochi Kochi Japan
| | - Yasuhiro Utsumi
- Ashoro Research Forest, Faculty of Agriculture Kyushu University Ashoro Hokkaido Japan
| | - Tomonori Kume
- Shiiba Research Forest, Faculty of Agriculture Kyushu University Miyazaki Japan
| | - Kosuke Homma
- Sado Island Center for Ecological Sustainability Niigata University Niigata Japan
| | - Koju Kishimoto
- Ecohydrology Research Institute, The University of Tokyo Forests, Graduate School of Agricultural and Life Sciences, the University of Tokyo Seto Aichi Japan
| | - Kazuhiko Masaka
- Department of Forest Science, Faculty of Agriculture Iwate University Iwate Japan
| | - Kenta Watanabe
- National Institute of Technology, Okinawa College Okinawa Japan
| | - Motomu Toda
- Graduate School of Integrated Sciences for Life, Hiroshima University Higashihiroshima Japan
| | - Dai Nagamatsu
- Faculty of Agriculture Tottori University Tottori Japan
| | - Yuko Miyazaki
- Graduate School of Environmental and Life Science, Okayama University Okayama Japan
| | - Tamon Yamashita
- Education and Research Center for Biological Resources, Faculty of Life and Environmental Sciences Shimane University Matsue Shimane Japan
| | - Naoko Tokuchi
- Field Science Education and Research Center, Kyoto University Kyoto Japan
| |
Collapse
|
3
|
Matsuyama H, Agetsuma N, Okada A, Suzuki M. The effect of deer exclusion on tick abundance in Japan: the verification based on field experiment for controlling deer density. ACTA ACUST UNITED AC 2019. [DOI: 10.7601/mez.70.153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Naoki Agetsuma
- Field Science Center for Northern Biosphere, Hokkaido University
| | - Ayumi Okada
- Department of Environmental Bioscience, School of Veterinary Medicine, Kitasato University
| | - Maki Suzuki
- Graduate School of Frontier Sciences, The University of Tokyo
| |
Collapse
|
4
|
Affiliation(s)
- Naoki Agetsuma
- Tomakomai Experimental Forest, Field Science Center for Northern BiosphereHokkaido University, TakaokaTomakomaiHokkaido053‐0035Japan
| | | | - Hino Takafumi
- Network Center of the Forest and Grassland Survey of the Monitoring Sites 1000 Project, Japan Wildlife Research Centerc/o Tomakomai Experimental Forest, Hokkaido University, TakaokaTomakomaiHokkaido053‐0035Japan
| | - Tatsuro Nakaji
- Tomakomai Experimental Forest, Field Science Center for Northern BiosphereHokkaido University, TakaokaTomakomaiHokkaido053‐0035Japan
| |
Collapse
|
5
|
Affiliation(s)
- Naoki Agetsuma
- ; Primate Research Institute; Kyoto University; Inuyama, Aichi 484 Japan
| |
Collapse
|
6
|
Agetsuma-Yanagihara Y, Inoue E, Agetsuma N. Effects of time and environmental conditions on the quality of DNA extracted from fecal samples for genotyping of wild deer in a warm temperate broad-leaved forest. MAMMAL RES 2017. [DOI: 10.1007/s13364-016-0305-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
7
|
Minoshima M, Takada MB, Agetsuma N, Hiura T. Sika deer browsing differentially affects web-building spider densities in high and low productivity forest understories. Écoscience 2015. [DOI: 10.2980/20-1-3580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
8
|
Hill DA, Fukui D, Agetsuma N, Macintosh AJJ. Influence of Trap Environment on the Effectiveness of an Acoustic Lure for Capturing Vespertilionid Bats in two Temperate Forest Zones in Japan. Mammal Study 2014. [DOI: 10.3106/041.039.0406] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
9
|
Agetsuma N, Koda R, Tsujino R, Agetsuma-Yanagihara Y. Retraction notice to “Impact of anthropogenic disturbance on the density and activity pattern of deer evaluated with respect to spatial scale-dependency” [Mamm. Biol. 79 (1) (2014) 44–51]. Mamm Biol 2014. [DOI: 10.1016/j.mambio.2014.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
10
|
Agetsuma N, Koda R, Tsujino R, Agetsuma-Yanagihara Y. Effective spatial scales for evaluating environmental determinants of population density in Yakushima macaques. Am J Primatol 2014; 77:152-61. [PMID: 25231752 DOI: 10.1002/ajp.22318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 06/22/2014] [Accepted: 06/30/2014] [Indexed: 11/09/2022]
Abstract
Population densities of wildlife species tend to be correlated with resource productivity of habitats. However, wildlife density has been greatly modified by increasing human influences. For effective conservation, we must first identify the significant factors that affect wildlife density, and then determine the extent of the areas in which the factors should be managed. Here, we propose a protocol that accomplishes these two tasks. The main threats to wildlife are thought to be habitat alteration and hunting, with increases in alien carnivores being a concern that has arisen recently. Here, we examined the effect of these anthropogenic disturbances, as well as natural factors, on the local density of Yakushima macaques (Macaca fuscata yakui). We surveyed macaque densities at 30 sites across their habitat using data from 403 automatic cameras. We quantified the effect of natural vegetation (broad-leaved forest, mixed coniferous/broad-leaved forest, etc.), altered vegetation (forestry area and agricultural land), hunting pressure, and density of feral domestic dogs (Canis familiaris). The effect of each vegetation type was analyzed at numerous spatial scales (between 150 and 3,600-m radii from the camera locations) to determine the best scale for explaining macaque density (effective spatial scale). A model-selection procedure (generalized linear mixed model) was used to detect significant factors affecting macaque density. We detected that the most effective spatial scale was 400 m in radius, a scale that corresponded to group range size of the macaques. At this scale, the amount of broad-leaved forest was selected as a positive factor, whereas mixed forest and forestry area were selected as negative factors for macaque density. This study demonstrated the importance of the simultaneous evaluation of all possible factors of wildlife population density at the appropriate spatial scale.
Collapse
Affiliation(s)
- Naoki Agetsuma
- Wakayama Experimental Forest, Hokkaido University, Wakayama, Japan
| | | | | | | |
Collapse
|
11
|
Agetsuma N, Koda R, Tsujino R, Agetsuma-Yanagihara Y. RETRACTED: Impact of anthropogenic disturbance on the density and activity pattern of deer evaluated with respect to spatial scale-dependency. Mamm Biol 2014. [DOI: 10.1016/j.mambio.2013.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
12
|
Hanya G, Fuse M, Aiba SI, Takafumi H, Tsujino R, Agetsuma N, Chapman CA. Ecosystem impacts of folivory and frugivory by Japanese macaques in two temperate forests in Yakushima. Am J Primatol 2013; 76:596-607. [DOI: 10.1002/ajp.22253] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 11/28/2013] [Accepted: 12/01/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Goro Hanya
- Primate Research Institute; Kyoto University; Inuyama Japan
| | - Mieko Fuse
- Sasayama Field Station; Kobe University; Sasayama Japan
| | | | | | | | - Naoki Agetsuma
- Field Science Center for Northern Biosphere; Hokkaido University; Kozagawa Japan
| | - Colin A. Chapman
- Department of Anthropology and McGill School of Environment; McGill University; Montréal Canada
- Wildlife Conservation Society; Bronx New York
| |
Collapse
|
13
|
Kazahari N, Tsuji Y, Agetsuma N. The relationships between feeding-group size and feeding rate vary from positive to negative with characteristics of food items in wild Japanese macaques (Macaca fuscata). BEHAVIOUR 2013. [DOI: 10.1163/1568539x-00003044] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To understand the costs and benefits of group-living, it is important to clarify the impacts of other individuals on foraging success. Previous studies on group-living primates have focused on the relationship between feeding-group size and feeding rate in food patches, and have exhibited inconsistent results, showing positive, neutral, or negative relationships. The relationship realized will depend on the balance of positive and negative impacts of co-feeding on feeding rate. The intensity of negative impacts (i.e., feeding competition) may vary with some characteristics of food items such as (1) patch size, (2) within-patch food density, (3) within-patch distribution pattern of food, (4) the abundance and (5) distribution pattern of within-habitat food trees, and (6) the relative energy content among available food items. Thus, the balance of positive and negative impacts of co-feeding, and ultimately the relationship between feeding-group size and feeding rate, is expected to change with characteristics of food items. In this study of wild Japanese macaques (Macaca fuscata), the relationship between feeding-group size and feeding rate, and the above six characteristics of 12 main food items were assessed over six seasons. Positive, neutral, or negative relationships between feeding-group size and feeding rate were detected among these food items. Positive relationships were consistently associated with within-patch food density; higher food density within food patches was likely to lead to positive relationships. Thus, various relationships between feeding-group size and feeding rate should be attributed to these specific characteristics of food items, which alter the degree of feeding competition.
Collapse
Affiliation(s)
- N. Kazahari
- Wildlife Research Center of Kyoto University, Tanaka-Sekiden-cho 2-24, Kyoto, Japan
| | - Y. Tsuji
- Primate Research Institute, Kyoto University, Kanrin, Inuyama, Aichi, Japan
| | - N. Agetsuma
- Wakayama Experimental Forest, Field Science Center for Northern Biosphere, Hokkaido University, Hirai 559, Kozagawa, Wakayama, Japan
| |
Collapse
|
14
|
Hanya G, Ménard N, Qarro M, Ibn Tattou M, Fuse M, Vallet D, Yamada A, Go M, Takafumi H, Tsujino R, Agetsuma N, Wada K. Dietary adaptations of temperate primates: comparisons of Japanese and Barbary macaques. Primates 2011; 52:187-98. [PMID: 21340696 DOI: 10.1007/s10329-011-0239-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Accepted: 01/31/2011] [Indexed: 11/24/2022]
Abstract
Habitat, diet and leaf chemistry are compared between Japanese and Barbary macaques to reveal the similarities and differences in dietary adaptations of temperate primates living at the eastern and western extremes of the genus Macaca. Tree species diversity and proportion of fleshy-fruited species are much higher in Japan than in North Africa. Both species spend considerable annual feeding time on leaves. Japanese macaques prefer fruits and seeds over leaves, and Barbary macaques prefer seeds. These characteristics are adaptive in temperate regions where fruit availability varies considerably with season, since animals can survive during the lean period by relying on leaf and other vegetative foods. The two species are different with respect to the higher consumption of herbs by Barbary macaques, and the leaves consumed contain high condensed and hydrolysable tannin for Barbary but not for Japanese macaques. Barbary macaques supplement less diverse tree foods with herbs. Because of the low species diversity and high tannin content of the dominant tree species, Barbary macaques may have developed the capacity to cope with tannin. This supports the idea that digestion of leaves is indispensable to survive in temperate regions where fruit and seed foods are not available for a prolonged period during each year.
Collapse
Affiliation(s)
- Goro Hanya
- Primate Research Institute, Kyoto University, Kanrin 41-2, Inuyama, Aichi, 484-8506, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Fukui D, Agetsuma N. Seasonal Change in the Diet Composition of the Asian Parti-Coloured BatVespertilio sinensis. Mammal Study 2010. [DOI: 10.3106/041.035.0402] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
16
|
Kazahari N, Agetsuma N. Mechanisms determining relationships between feeding group size and foraging success in food patch use by Japanese macaques (Macaca fuscata). BEHAVIOUR 2010. [DOI: 10.1163/000579510x521573] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AbstractWe evaluated the effects of social monitoring and feeding competition on foraging success in relation to the feeding group size of wild Japanese macaques (Macaca fuscata). Social monitoring is visual scanning by group members that assists them in following their own group. Individuals in smaller feeding groups may frequently use social monitoring while foraging, because they have an increased risk of losing their group. Therefore, social monitoring could be a cost for group-foraging animals. We made four predictions: (1) individuals in smaller feeding groups tend to abandon food patches to follow group members; (2) social monitoring frequency is higher in smaller feeding groups; (3) feeding rate decreases with increased social monitoring frequency; and (4) feeding rate initially increases with feeding group size because decreased social monitoring outweighs increased feeding competition, but after the feeding group reaches a certain size, feeding rate declines with increasing feeding group size due to the high costs of feeding competition. These predictions were supported by our results. Thus, the relationship between feeding group size and feeding rate can show three patterns (positive, neutral and negative) in response to the balance between the costs of social monitoring and feeding competition.
Collapse
Affiliation(s)
- Nobuko Kazahari
- 1Wildlife Research Center, Kyoto University, Kyoto, Japan, Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Japan;,
| | - Naoki Agetsuma
- 2Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Japan
| |
Collapse
|
17
|
Kazahari N, Agetsuma N. Social factors enhancing foraging success of a wild group of Japanese macaques (Macaca fuscata) in a patchy food environment. BEHAVIOUR 2008. [DOI: 10.1163/156853908783929188] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
18
|
Hanya G, Kiyono M, Takafumi H, Tsujino R, Agetsuma N. Mature leaf selection of Japanese macaques: effects of availability and chemical content. J Zool (1987) 2007. [DOI: 10.1111/j.1469-7998.2007.00308.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
|
20
|
Agetsuma N. Ecological function losses caused by monotonous land use induce crop raiding by wildlife on the island of Yakushima, southern Japan. Ecol Res 2007. [DOI: 10.1007/s11284-007-0358-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
21
|
Agetsuma N. Minimum Area Required for Local Populations of Japanese Macaques Estimated from the Relationship Between Habitat Area and Population Extinction. INT J PRIMATOL 2007. [DOI: 10.1007/s10764-006-9101-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
22
|
Fukui D, Agetsuma N, Hill DA. Acoustic identification of eight species of bat (mammalia: chiroptera) inhabiting forests of southern hokkaido, Japan: potential for conservation monitoring. Zoolog Sci 2005; 21:947-55. [PMID: 15459453 DOI: 10.2108/zsj.21.947] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Assessing the impact of forest management on bat communities requires a reliable method for measuring patterns of habitat use by individual species. A measure of activity can be obtained by monitoring echolocation calls, but identification of species is not always straightforward. We assess the feasibility of using analysis of time-expanded echolocation calls to identify free-flying bats in the Tomakomai Experimental Forest of Hokkaido University, Hokkaido, northern Japan. Echolocation calls of eight bat species were recorded in one or more of three conditions: from hand-released individuals, from bats flying in a confined space and from bats emerging from their roost. Sonograms of 171 calls from 8 bat species were analyzed. These calls could be categorized into 3 types according to their structure: FM/CF/FM type (Rhinolophus ferrumequinum), FM types (Murina leucogaster, Murina ussuriensis, Myotis macrodactylus and Myotis ikonnikovi) and FM/QCF types (Eptesicus nilssonii, Vespertilio superans and Nyctalus aviator). Sonograms of the calls of R. ferrumequinum could easily be distinguished from those of all other species by eye. For the remaining calls, seven parameters (measures of frequency, duration and inter-call interval) were examined using discriminant function analysis, and 92% of calls were correctly classified to species. For each species, at least 80% of calls were correctly classified. We conclude that analysis of echolocation calls is a viable method for distinguishing between species of bats in the Tomakomai Experimental Forest, and that this approach could be applied to examine species differences in patterns of habitat-use within the forest.
Collapse
Affiliation(s)
- Dai Fukui
- Tomakomai Experimental Forest, Hokkaido University, Takoaka, Japan.
| | | | | |
Collapse
|
23
|
Agetsuma N, Sugiura H, Hill DA, Agetsuma-Yanagihara Y, Tanaka T. Population density and group composition of Japanese sika deer (Cervus nippon yakushimae
) in an evergreen broad-leaved forest in Yakushima, southern Japan. Ecol Res 2003. [DOI: 10.1046/j.1440-1703.2003.00571.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
24
|
Hanya G, Noma N, Agetsuma N. Altitudinal and seasonal variations in the diet of Japanese macaques in Yakushima. Primates 2003; 44:51-9. [PMID: 12548334 DOI: 10.1007/s10329-002-0007-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2001] [Accepted: 08/29/2002] [Indexed: 10/25/2022]
Abstract
Altitudinal and seasonal variations in the diet of Japanese macaques in Yakushima, southwestern Japan, were studied for 2 years by means of fecal analysis. The altitudinal range of fecal samples collected was 30 m to 1,203 m above sea level, and it was divided into three zones: low-zone forest (0-399 m), middle-zone forest (400-799 m), and high-zone forest (800 m-1,230 m). There was a considerable altitudinal and seasonal variation in the macaques' diet. Seed/fruit and animal matter were eaten more in the lower zones, whereas more fiber and fungi were consumed in the higher zones. In all of the zones, they ate seed/fruits the most in autumn (September-November) and the least in spring (March-April). They ate fibrous food the most in spring and the least in autumn. Macaques relied on seed/fruits heavily in the lower zone for a longer period than in the higher zones. Macaques in the high-zone forest ate almost no seed/fruit foods from March to May. Altitudinal variations in availability of seed/fruit foods seem to have influenced the altitudinal variations in diet. Total basal area of seed/fruit-food trees, species richness of seed/fruit-foods, main seed/fruit-food types available, and annual fleshy-fruit production all decreased with increasing altitude. Both interannual variation and annual cyclicity of diet were found in all zones.
Collapse
Affiliation(s)
- Goro Hanya
- Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Japan.
| | | | | |
Collapse
|
25
|
|
26
|
|
27
|
|
28
|
|
29
|
|
30
|
Takahata Y, Suzuki S, Agetsuma N, Okayasu N, Sugiura H, Takahashi H, Yamagiwa J, Izawa K, Furuichi T, Hill DA, Maruhashi T, Saito C, Saito S, Sprague DS. Reproduction of wild Japanese macaque females of Yakushima and Kinkazan Islands: A preliminary report. Primates 1998. [DOI: 10.1007/bf02573082] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
31
|
Saito C, Sato S, Suzuki S, Sugiura H, Agetsuma N, Takahata Y, Sasaki C, Takahashi H, Tanaka T, Yamagiwa J. Aggressive intergroup encounters in two populations of Japanese macaques (Macaca fuscata). Primates 1998. [DOI: 10.1007/bf02573079] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
32
|
Takahata Y, Suzuki S, Okayasu N, Sugiura H, Takahashi H, Yamagiwa J, Izawa K, Agetsuma N, Hill D, Saito C, Sato S, Tanaka T, Sprague D. Does troop size of wild Japanese macaques influence birth rate and infant mortality in the absence of predators? Primates 1998. [DOI: 10.1007/bf02557737] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
33
|
Abstract
The synchrony of behaviour among individuals in a group of Yakushima macaques was evaluated in relation to group size and food resources. The degree of synchrony was greater when the group was small (5-8 individuals) than when it was large (15-19 individuals). Diet did not affect the degree of synchrony. However, the duration of the 'active phase', in which most members of the group synchronized feeding and moving, was shorter when they fed mostly on fruit and seeds (fruit- and seed-eating season) than when they fed mostly on leaves and fallen seeds (leaf- and fallen-seed-eating season). When the group was large, the monkeys ranged over a greater area and foraged in fewer trees during the fruit-and seed-eating season than during the leaf- and fallen-seed-eating season. However, this tendency was not so clear when the group was small. These results suggest that the extent to which the distribution of food resources determines patterns of foraging increases with group size and that monkeys in a larger group reduce levels of intragroup food competition in order to obtain sufficient food.
Collapse
Affiliation(s)
- N Agetsuma
- Primate Research Institute, Kyoto University, Inuyama, Japan
| |
Collapse
|
34
|
Hill DA, Agetsuma N. Supra-annual variation in the influence of Myrica rubra fruit on the behavior of a troop of Japanese macaques in Yakushima. Am J Primatol 1995; 35:241-250. [PMID: 31924071 DOI: 10.1002/ajp.1350350307] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/1993] [Revised: 07/19/1994] [Indexed: 11/11/2022]
Abstract
Observations were made on a well-habituated natural troop of Japanese macaques (Macaca fuscata yakui), living in warm-temperate, lowland forest in Yakushima. Between mid-May and the end of June the macaques feed on the fruit of the evergreen tree Myrica rubra (Myricaceae). The fruit of this species are abundant in some years and scarce in others. Data were compared for two heavy-fruiting years (1988 and 1990) and one poor-fruiting year (1991) to examine the influence of fruit availability on patterns of foraging, ranging, and the frequency of inter-troop encounters. In both heavy-fruiting years M. rubra fruit accounted for a maximum of over 70% of foraging time, compared with a maximum of <5% in the poor-fruiting year. Heavy fruiting was also associated with a marked decrease in the overall time spent foraging. In early May of all three years troop movements were largely confined to northern parts of the home range. By early June of both heavy-fruiting years ranging had shifted to the south-west, and included an area with a high concentration of M. rubra trees. This area was rarely visited at other times, and was not visited during the study period in the poor-fruiting year. The overlap in range-use between the two heavy-fruiting years was significantly greater than that between the heavy-fruiting years and the poor-fruiting year. Heavy fruiting was also associated with an increase in the frequency of inter-troop encounters. © 1995 Wiley-Liss, Inc.
Collapse
Affiliation(s)
- David A Hill
- Scottish Primate Research Group, Institute of Cell, Animal and Population Biology, University of Edinburgh, Scotland
| | - Naoki Agetsuma
- Primate Research Institute, Kyoto University, Inuyama, Japan
| |
Collapse
|