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You searched for: Journal name Mammal study Remove constraint Journal name: Mammal study Subject Japan Remove constraint Subject: Japan
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1. Cats were Responsible for the Headless Carcasses of Shearwaters: Evidence from Genetic Predator Identification

Author:
Junco Nagata; Atsushi Haga; Yuki Kusachi; Mikuni Tokuyoshi; Hideki Endo; Yuya Watari
Source:
Mammal study 2022 v.47 no.3 pp. 197-204
ISSN:
1348-6160
Subject:
Calonectris; DNA; Felis silvestris; Japan; cats; esophagus; genetic analysis; head; invasive species; predation; stakeholders; surveys
Abstract:
... The domestic cat Felis silvestris catus is known to be one of the most notorious invasive alien predators. Seabirds are typical taxonomic groups that have been impacted by free-ranging cats on islands, and their headless carcasses are frequently observed. We conducted genetic predator identification of the carcasses of streaked shearwater Calonectris leucomelas and described their characteristics ...
DOI:
10.3106/ms2021-0047

2. The Genetic Diversity and Structure of the Feral Raccoon (Procyon lotor) Population in Shikoku Island, Japan

Author:
Tadashi Yamashiro; Yoshinori Kaneshiro; Asuka Yamashiro; Masayuki Maki
Source:
Mammal study 2022 v.47 no.3 pp. 189-196
ISSN:
1348-6160
Subject:
Japan; Procyon lotor; genetic structure; genetic variation; haplotypes; invasive species; mammals; microsatellite repeats; mitochondria; population genetics
Abstract:
... We explored the genetic diversity and population genetic structure of an invasive alien species, the raccoon Procyon lotor, which was introduced into the Shikoku Island of Japan, using sequences of the mitochondrial control region and 10 polymorphic microsatellite loci. In 80 individuals examined, we detected two genetically divergent haplotypes, indicating that two maternal lineages had been intr ...
DOI:
10.3106/ms2021-0052

3. Origin and Abundance of Steller Sea Lions (Eumetopias jubatus) in Winter Haulout at Benten-Jima Rock Off Cape Soya, Hokkaido, Japan between 2012–2017

Author:
Yoko Goto; Takeomi Isono; Shun Ikuta; Vladimir Burkanov
Source:
Mammal study 2022 v.47 no.2 pp. 87-101
ISSN:
1348-6160
Subject:
Eumetopias jubatus; Japan; coasts; mammals; surveys
Abstract:
... Benten-Jima Rock, located off Cape Soya, Hokkaido, has been a Steller sea lion (SSL; Eumetopias jubatus) winter haulout for decades. The animals usually occupy the site from October to May. Observations have been sporadic, although the population count started to increase in 2005. We have monitored SSL numbers since 2012 using several survey methods, such as observation by direct counting and remo ...
DOI:
10.3106/ms2020-0029

4. Contribution of Acorn Masting to Food Composition and Body Condition of and Crop Damage by Wild Boars (Sus scrofa) Inhabiting Evergreen Forests in Japan

Author:
Akitaka Omori; Eiji Hosoi
Source:
Mammal study 2021 v.47 no.2 pp. 65-75
ISSN:
1348-6160
Subject:
Castanopsis cuspidata; Japan; Sus scrofa; acorns; bamboos; body condition; crop damage; food composition; mammals; masting; stomach; wild boars
Abstract:
... We analyzed the stomach contents of wild boars (Sus scrofa) inhabiting evergreen forests in western Japan and found that they were dependent on the masting of acorns of Castanopsis cuspidata. The increased availability of C. cuspidata acorns positively affected their consumption by wild boars. In the good mast years, wild boars consumed C. cuspidata acorns from November to June of the following ye ...
DOI:
10.3106/ms2021-0024

5. Diel Activity Patterns of Three Sympatric Medium-Sized Carnivores during Winter and Spring in a Heavy Snowfall Area in Northeastern Japan

Author:
Ryoga Watabe; Masayuki U. Saito
Source:
Mammal study 2021 v.46 no.1 pp. 69-75
ISSN:
1348-6160
Subject:
Japan; Procyon lotor; cameras; diel activity; forests; mammals; snow; spring; sympatry; winter
Abstract:
... In a heavy snowfall area in northeastern Japan, we clarified the diel activity patterns of and seasonal differences in three sympatric carnivores (red foxes, raccoon dogs, and Japanese martens) during winter and spring, and the interspecific differences among the activity patterns in each season. The activity time of the target species was obtained by camera-trap surveys at seven sites around the ...
DOI:
10.3106/ms2020-0039

6. Effects of Vegetation Structure on the Habitat Utilization of Free-Ranging Japanese Macaques (Macaca fuscata) in a Coniferous Plantation Area

Author:
Akira Chijiiwa; Akisato Nishimura
Source:
Mammal study 2021 v.46 no.2 pp. 143-152
ISSN:
1348-6160
Subject:
Japan; Macaca fuscata; bamboos; coniferous forests; deciduous forests; edge effects; food availability; food composition; food plants; habitat conservation; habitats; home range; mammals; rural areas; surveys; vegetation structure
Abstract:
... We studied home range use of crop-raiding Japanese macaques (Macaca fuscata) in Shiga Prefecture, central Japan, to address the effects of vegetation structure, specifically forest edge, on their habitat utilization. We compared the home range use of a troop inhabiting a rural area surrounded by a coniferous plantation with that of a troop inhabiting deciduous/coniferous forest mixed area. We then ...
DOI:
10.3106/ms2020-0069

7. External Morphological and Molecular Evidence of Natural Intrageneric Hybridization between Common and Indo-Pacific Bottlenose Dolphins (Tursiops truncatus × T. aduncus) from Japanese Waters

Author:
Daiki Inamori; Yuki F. Kita; Noriko Funasaka
Source:
Mammal study 2021 v.47 no.2 pp. 133-140
ISSN:
1348-6160
Subject:
Japan; Tursiops aduncus; Tursiops truncatus; body length; bycatch; dolphins; females; haplotypes; males; microsatellite repeats; mitochondrial DNA
Abstract:
... Hybrid cetaceans occur in both captive and natural environments. This study is the first to describe the external morphological and genetic characterizations of natural intrageneric hybridization between the common bottlenose dolphin, Tursiops truncatus, and the Indo-Pacific bottlenose dolphin, T. aduncus, in Japanese waters. In November 2019, a stray dolphin was seen in Moriura Bay, Wakayama, Jap ...
DOI:
10.3106/ms2021-0039

8. Factors Affecting Pre-Denning Activity in Asian Black Bears

Author:
Seungyun Baek; Tadashi Iwasaki; Koji Yamazaki; Tomoko Naganuma; Akino Inagaki; Kahoko Tochigi; Maximilian L. Allen; Chinatsu Kozakai; Shinsuke Koike
Source:
Mammal study 2021 v.46 no.4 pp. 1-6
ISSN:
1348-6160
Subject:
Japan; Ursus thibetanus; hibernation; life history; mammals; process control
Abstract:
... Hibernation (denning) is an important aspect of the life history of Asian black bears (Ursus thibetanus), and denning chronology can be influenced by biotic and abiotic factors. We investigated activity patterns during the pre-denning period of Asian black bears using statistical process control in combination with activity sensors to quantitatively identify a marked reduction in activity from 200 ...
DOI:
10.3106/ms2020-0101

9. First Record of Lineage IV of Rattus tanezumi (Rodentia: Muridae) from the southern Ryukyus, Japan

Author:
Masaharu Motokawa; Tomohisa Makino; Takashi O. Yato; Shinya Okabe; Tsunehiro Shiroma; Masanao Toyama; Hidetoshi Ota
Source:
Mammal study 2022 v.47 no.3 pp. 205-212
ISSN:
1348-6160
Subject:
Japan; cytochrome b; fauna; genes; mitochondria
Abstract:
... Based on mitochondrial cytochrome b gene sequences, we report representatives of the Lineage IV of Rattus tanezumi (Rodentia: Muridae) from Miyakojima, Taramajima, and Yonagunijima Islands in the southern Ryukyus as the first record of the lineage from Japan. The new record of Lineage IV provides an addition to the mammal fauna of Japan essentially at the species level. Accordingly, the genus Ratt ...
DOI:
10.3106/ms2022-0001

10. Human–Macaque Conflicts in Shrinking Communities: Recent Achievements and Challenges in Problem Solving in Modern Japan

Author:
Hiroto Enari
Source:
Mammal study 2021 v.46 no.2 pp. 115-130
ISSN:
1348-6160
Subject:
Japan; Macaca fuscata; conflict management; mammals; people
Abstract:
... The populations of the Japanese macaque (Macaca fuscata), which were vulnerable until the early 20th century, have recently recovered. However, this recovery process has rarely been hailed as a conservation success, because it has triggered serious conflicts between people and the macaques. The key exacerbating causes of the conflicts have been the drastic changes in the interrelations between the ...
DOI:
10.3106/ms2019-0056

11. Morphological and Molecular Recharacterization of the Rodent Genus Mus from Nepal Based on Museum Specimens

Author:
Makoto Kishimoto; Masaru Kato; Hitoshi Suzuki
Source:
Mammal study 2021 v.46 no.4 pp. 1-12
ISSN:
1348-6160
Subject:
Japan; Mus musculus; altitude; color; cytochrome b; fur; genes; geometry; mice; mitochondria; morphometry; museums; nose; phylogeny; skull; taxonomy; Nepal
Abstract:
... The taxonomy and phylogeny of the subgenus Mus, the Eurasian lineage of the genus Mus, remain unresolved, even for the house mouse (Mus musculus). While the subgenus is diverse in Asia, few studies cover both its morphology and molecular phylogeny. We re-examined 70 specimens identified as M. cervicolor that were collected from central Nepal in 1968 and 1975 and are currently deposited in the Hokk ...
DOI:
10.3106/ms2020-0065

12. New Humpback Whale Remains from the Holocene (Quaternary) of Osaka, Japan

Author:
Yoshihiro Tanaka; Hiroyuki Taruno
Source:
Mammal study 2021 v.46 no.4 pp. 1-6
ISSN:
1348-6160
Subject:
Holocene epoch; Japan; Megaptera novaeangliae; adults; body length; coracoid; humerus; scapula; whales
Abstract:
... The generic name of the humpback whale, Megaptera was named after their forelimb, which means a “large wing”. New whale remains (specimen number: OMNH-QV 60) including the right scapula, humerus, and radius from the Namba Formation, Holocene in Osaka, Japan is reported as a humpback whale, Megaptera novaeangliae based on diagnoses of the species; having reduced acromion and coracoid processes of t ...
DOI:
10.3106/ms2021-0007

13. Seasonal Diel Activity Patterns of Three Sympatric Ungulates in Forested Area in Central Japan

Author:
Takashi Ikeda; Satuski Nakamori; Masaki Ando; Takumi Shirakawa; Takuya Okamoto; Masatsugu Suzuki
Source:
Mammal study 2021 v.47 no.1 pp. 47-56
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; cameras; diel activity; forests; nocturnal activity; sympatry; wild boars
Abstract:
... The diel activity pattern is a key factor in the coexistence mechanism of sympatric wild animals, enabling temporal niche partitioning. Although previous studies on sympatric ungulates (sika deer, Japanese serow, and wild boar) have reported dietary and spatial niche partitioning, temporal niche partitioning in these sympatric ungulates is not well understood. In this study, we aimed to elucidate ...
DOI:
10.3106/ms2021-0031

14. Trends in Habitat Use between Sympatric Sika Deer and Japanese Serow as Revealed by Camera Traps

Author:
Satsuki Nakamori; Masaki Ando
Source:
Mammal study 2022 v.47 no.3 pp. 165-176
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; cameras; deer; forests; habitat preferences; habitats; snowpack; summer; sympatry; winter
Abstract:
... In response to severe vegetation degradation caused by sika deer in Japan, it is important to understand the habitat use trends of the sika deer and sympatric Japanese serows to promote the management and conservation of both species and their habitats. This study used camera traps to examine the trends of habitat use of the two sympatric ungulates in the Kuraiyama Experimental Forest (KEF) at Gif ...
DOI:
10.3106/ms2021-0012

15. Abundance Estimates of Steller Sea Lions (Eumetopias jubatus) Off the Western Coast of Hokkaido, Japan

Author:
Kaoru Hattori; Toshihide Kitakado; Takeomi Isono; Orio Yamamura
Source:
Mammal study 2021 v.46 no.1 pp. 3-16
ISSN:
1348-6160
Subject:
Eumetopias jubatus; Japan; coasts; continental shelf; mammals; seasonal variation; spring; statistical analysis; Sea of Japan
Abstract:
... Aerial surveys were conducted to estimate the abundance of wintering populations of Steller sea lions (SSLs; Eumetopias jubatus) in the Sea of Japan originated from Russian waters using the line transect sampling method during spring from 2005 to 2019. The survey areas covered the continental shelf off the western coast of Hokkaido. A total of 28 196 km survey effort was made through the study per ...
DOI:
10.3106/ms2020-0030

16. Can Video Traps Reliably Detect Animals? Implications for the Density Estimation of Animals without Individual Recognition

Author:
Gota Yajima; Yoshihiro Nakashima
Source:
Mammal study 2021 v.46 no.3 pp. 189-195
ISSN:
1348-6160
Subject:
Japan; animal density; cameras; dogs; probability
Abstract:
... Several statistical models have recently been developed to estimate animal density using camera trappings without individual animal recognition. However, most models assume that detection by camera traps of animals passing a specific area of the camera view is perfect. A recently developed REST model (Nakashima et al. 2018; Journal of Applied Ecology 55: 735–744) also depends on the trapping rates ...
DOI:
10.3106/ms2020-0055

17. Comparison of Age-at-Death Patterns in the Irruption and Post-Population-Crash Phases of an Introduced Sika Deer (Cervus nippon) Population

Author:
Kazutaka M. Takeshita; Mugino O. Kubo; Mayumi Ueno; Mari Ishizaki; Hiroshi Takahashi; Tsuyoshi Yoshida; Hiromasa Igota; Takashi Ikeda; Koichi Kaji
Source:
Mammal study 2021 v.46 no.1 pp. 77-84
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; adverse effects; data collection; deer; fawns; probability; yearlings
Abstract:
... Age-specific changes in deer demographic parameters under food limitation are an important factor in predicting the post-population-crash dynamics of irruptive deer populations. To evaluate the differences in age-class-at-death between the initial irruption and post-population-crash phases of a sika deer (Cervus nippon) population, we analyzed a dataset of naturally dead carcasses from an introduc ...
DOI:
10.3106/ms2020-0009

18. Diet of Mass-Stranded Striped Dolphins (Stenella coeruleoalba) in Southern Japan (East China Sea)

Author:
Ayaka Matsuda; Tadasu K. Yamada; Yuko Tajima; Tatsuya Kunisue; Masao Amano; Takashi F. Matsuishi
Source:
Mammal study 2020 v.46 no.1 pp. 17-24
ISSN:
1348-6160
Subject:
Japan; Loliginidae; Ommastrephidae; Stenella coeruleoalba; chi-square distribution; diet; females; males; muscles; prey species; stomach; East China Sea
Abstract:
... Striped dolphins (Stenella coeruleoalba) mass-stranded on 26 April 2013 at Minamisatsuma, Kagoshima Prefecture, in southern Japan (East China Sea). The diet of the mass-stranded striped dolphins was investigated to reveal their foraging pattern through analyses of the stomach contents and stable isotopes in muscle. Of 26 stomachs sampled, 25 contained hard parts of prey animals; no fleshy remains ...
DOI:
10.3106/ms2020-0005

19. Estimation of Sexual Maturity Based on Morphometrics of Genital Organs in Male Northern Fur Seals, Callorhinus ursinus

Author:
Yukino Hirakawa; Takanori Horimoto; Ippei Suzuki; Yoko Mitani
Source:
Mammal study 2020 v.46 no.1 pp. 41-51
ISSN:
1348-6160
Subject:
Callorhinus ursinus; Japan; discriminant analysis; epididymis; fur; histology; males; morphometry; ontogeny; seasonal variation; sexual maturity; spermatogenesis
Abstract:
... It's not always possible to obtain samples from dead male pinnipeds that are fresh enough to determine the histological characteristics of spermatogenesis and their stage of sexual maturity. We propose that the morphometrics of genital organs of northern fur seals, Callorhinus ursinus, can be used as a new indicator of sexual maturity. We analyzed data from collected records of male fur seals arou ...
DOI:
10.3106/ms2020-0004

20. Evolutionary and Anthropogenic Factors Affecting the Mitochondrial D-loop Genetic Diversity of Apodemus and Myodes Rodents on the Northern Slope of Mt. Fuji

Author:
Jun J. Sato; Haruka Aiba; Kouichi Ohtake; Shusaku Minato
Source:
Mammal study 2020 v.45 no.4 pp. 315-325
ISSN:
1348-6160
Subject:
Apodemus argenteus; Apodemus speciosus; Japan; Myodes; anthropogenic activities; biodiversity; genetic variation; mitochondria; national parks; roads; topographic slope
Abstract:
... Nucleotide sequences of the mitochondrial D-loop region were examined in three wild rodents (Apodemus argenteus, Apodemus speciosus, and Myodes smithii) on the northern slope of Mt. Fuji, the highest mountain in Japan, to elucidate the past evolutionary and present anthropogenic processes shaping their genetic diversity. Nucleotide diversity, median-joining network, and mismatch distribution analy ...
DOI:
10.3106/ms2020-0033

21. A Fin Whale from the Holocene (Quaternary) of Osaka City, Japan

Author:
Yoshihiro Tanaka; Hiroyuki Taruno
Source:
Mammal study 2020 v.45 no.2 pp. 143-154
ISSN:
1348-6160
Subject:
Balaenoptera physalus; Holocene epoch; Japan; Pleistocene epoch; mammals; scapula; skull
Abstract:
... Specimen number OMNH-QV 4815, including the skull, mandibles, fused basihyal and thyrohyal, vertebrae, ribs, and scapula from the Namba Formation (Holocene), in Osaka City, Japan is identified as Balaenoptera physalus by having the thick anteriorly projected and laterally narrower basihyal and thyrohyal complex, and slender mandibles with laterally tilted coronoid processes. OMNH-QV 4815 is the se ...
DOI:
10.3106/ms2019-0044

22. Genetic Analysis of a Newly Established Deer Population Expanding in the Sasebo Area in Nagasaki Prefecture, Japan Reveals No Evidence of Genetic Disturbance by Formosan Sika Deer

Author:
Junco Nagata; Masatoshi Yasuda; Asuka Yamashiro
Source:
Mammal study 2021 v.46 no.3 pp. 251-263
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; deer; forestry; genetic analysis; haplotypes; hybridization; invasive species; mitochondrial DNA; vegetation
Abstract:
... Native sika deer (Cervus nippon) had not been observed in and around Sasebo City, Nagasaki Prefecture, Kyushu, Japan. However, deer have recently been confirmed in this area, and the number of individuals and the range have been expanding, causing damage to forestry and natural vegetation. Although the origin of these deer is unknown, it may be derived from Formosan sika deer (C. n. taiouanus), wh ...
DOI:
10.3106/ms2020-0084

23. Genetic Assessment on the Origin of Alien Macaques in the Boso Peninsula in Japan

Author:
Yoshi Kawamoto
Source:
Mammal study 2021 v.46 no.2 pp. 173-186
ISSN:
1348-6160
Subject:
Japan; Y chromosome; genes; haplotypes; hybridization; introduced species; mammals; microsatellite repeats; mitochondrial DNA; vaccines; China; Indochina
Abstract:
... Japanese macaques and alien macaques have hybridized in the Boso Peninsula, Chiba Prefecture, Japan. In this study, the origin of the alien species was investigated by molecular assessments with mitochondrial DNA (mtDNA) and Y-chromosome genes. Maternal origin was assessed by comparing mtDNA sequence records. The results suggested that the alien species in the southern part of peninsula originated ...
DOI:
10.3106/ms2020-0078

24. Geographic Skull Variation of the Japanese Weasel, Mustela itatsi in Islands Adjacent to Southern Kyushu

Author:
Satoshi Suzuki; Mitsuharu Matsumoto
Source:
Mammal study 2020 v.45 no.1 pp. 27-39
ISSN:
1348-6160
Subject:
Mustela; islands; multivariate analysis; skull; Japan
Abstract:
... Skull morphology of Mustela itatsi from two islands adjacent to Kyushu, Kamikoshikijima and Yakushima Isls., Kagoshima Prefecture were compared with populations from mainland Japan. Although size and shape variation of these island populations were within whole species range of variation, the size variation was less than that of some mainland populations. In contrast, canonical variate analysis sh ...
DOI:
10.3106/ms2019-0023

25. Introduction and Expansion History of the Masked Palm Civet, Paguma Larvata, in Japan, Revealed by Mitochondrial DNA Control Region and Cytochrome b Analysis

Author:
Yu Endo; Liang-Kong Lin; Koji Yamazaki; Kurtis Jai-Chyi Pei; Shih-Wei Chang; Yen-Jean Chen; Keiji Ochiai; Shuuji Yachimori; Tomoko Anezaki; Yayoi Kaneko; Ryuichi Masuda
Source:
Mammal study 2020 v.45 no.1 pp. -
ISSN:
1348-6160
Subject:
Japan; Paguma larvata; cytochrome b; haplotypes; introduced species; mammals; mitochondrial DNA; phylogeny; Taiwan
Abstract:
... The masked palm civet (Paguma larvata) in Japan is considered as an alien species; however, the details on introduction routes to Japan and the expansion history are still unclear. In the present study, to further solve these questions, we analyzed the mitochondrial DNA control region (523 base-pairs) of 226 individuals from Japan and Taiwan, and identified 13 haplotypes, which are phylogeneticall ...
DOI:
10.3106/ms2020-0016

26. Mitochondrial DNA Analyses of Invasive Raccoons (Procyon lotor) in the Boso Peninsula, Japan

Author:
Kazuya Yoshida; Miki Hirose; Masami Hasegawa; Eiji Inoue
Source:
Mammal study 2020 v.45 no.1 pp. 71-76
ISSN:
1348-6160
Subject:
Procyon lotor; ecological invasion; females; genetic analysis; genetic background; genetic markers; genetic variation; haplotypes; invasive species; landscapes; mammals; mitochondria; mitochondrial DNA; single nucleotide polymorphism; Central America; Japan
Abstract:
... Ecological genetic analyses have recently been applied to the field of biological invasions to describe the genetic background of the invasive species. The raccoon (Procyon lotor) is a medium-sized mammal that is native to North and Central America and has been naturalized into several countries worldwide. In the Boso Peninsula, Japan, raccoons were estimated to have been introduced during the 199 ...
DOI:
10.3106/ms2019-0030

27. Mitochondrial DNA Haplotypes of Killer Whales around Hokkaido, Japan

Author:
Yoko Mitani; Yuki F. Kita; Shigeo Saino; Motoi Yoshioka; Hiroshi Ohizumi; Fumio Nakahara
Source:
Mammal study 2021 v.46 no.3 pp. 205-211
ISSN:
1348-6160
Subject:
Japan; Orcinus orca; coasts; cytochrome b; databases; ecotypes; genetic variation; haplotypes; mammals; mitochondrial DNA; mitochondrial genome; nucleotide sequences
Abstract:
... In this study, we examined a genetic variation of killer whales, Orcinus orca, from off the coast of Hokkaido, Japan, by sequencing the D-loop and cytochrome b (Cyt-b) regions of the mitochondrial genome. Three D-loop and two Cyt-b haplotypes were identified from eight skin biopsies. These five haplotypes had been previously deposited at GenBank and the International Nucleotide Sequence Database C ...
DOI:
10.3106/ms2020-0072

28. Opportunistic Food Habits of the Raccoon Dog — A Case Study on Suwazaki Peninsula, Shikoku, Western Japan

Author:
Seiki Takatsuki; Masakazu Inaba; Kiyokazu Hashigoe; Hiromitsu Matsui
Source:
Mammal study 2020 v.46 no.1 pp. 25-32
ISSN:
1348-6160
Subject:
Japan; Nyctereutes procyonoides; Procyon lotor; autumn; case studies; diet; mammals; pericarp; pulp; spring; summer; temperate zones; trees; winter
Abstract:
... Despite of great variation of food habits of the raccoon dogs (Nyctereutes procyonoides) on the Japanese archipelago, information of the food habits of them in the warm temperate zone in southern Japan is limited. The food habits of them on Suwazaki Peninsula in western Shikoku Island, southwestern Japan, were studied using fecal analysis. The sampling period spanned May 2019 to April 2020. The po ...
DOI:
10.3106/ms2020-0061

29. Reasons for the Dissatisfaction of Residents with the Recent Reduction in the Amount of Crop Damage by Japanese Macaques—a Case Study in a Typical Depopulating Prefecture in Northern Japan

Author:
Haruka S. Enari; Hiroto Enari
Source:
Mammal study 2021 v.46 no.2 pp. 153-160
ISSN:
1348-6160
Subject:
Japan; Macaca fuscata; case studies; conflict management; crop damage; decision making; human population; mammals; questionnaires; spatial data; statistics; urban agriculture
Abstract:
... A decrease in the amount of crop damage by Japanese macaques (Macaca fuscata) is often defined as the primary official goal for conflict resolution. Recent government-led countermeasures have resulted in a decline in the amount of such damage, at least per the government statistics; however, residents rarely recognize this decline as a success of conflict management. We hypothesized that this unex ...
DOI:
10.3106/ms2020-0060

30. Aneuploid Chromosome Constitutions of the Small Japanese Field Mouse, Apodemus argenteus, in the Western Mountainous Area of Kanagawa Prefecture, Honshu, Japan

Author:
Hikari Myoshu; Masahiro A. Iwasa
Source:
Mammal study 2019 v.44 no.4 pp. 283-288
ISSN:
1348-6160
Subject:
Apodemus argenteus; B chromosomes; X chromosome; aneuploidy; females; fluorescence; karyotyping; mice; mountains; quinacrine; staining; Japan
Abstract:
... We studied an occurrence of chromosomal aneuploidy for ten individuals in the small Japanese field mouse, Apodemus argenteus, from the western mountainous area of Kanagawa Prefecture, Honshu, Japan. Eight of the individuals examined showed the standard 2n = 46 and FNa = 48 constitutions as the most frequent karyotype. However, of those eight individuals, seven carried an inter-cellular mosaicism w ...
DOI:
10.3106/ms2019-0002

31. Bi-Directional Movement of Deer between Tomogashima Islands and the Western Part of the Kii Peninsula, Japan, with Special Reference to Hybridization between the Japanese Sika Deer (Cervus nippon centralis) and the Introduced Exotic Deer

Author:
Toshihito Takagi; Yuki Matsumoto; Ryosuke Koda; Hidetoshi B. Tamate
Source:
Mammal study 2020 v.45 no.2 pp. 133-141
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; deer; ecosystems; genes; hybrids; introgression; microsatellite repeats; mitochondrial DNA; population structure; Taiwan
Abstract:
... Deer have been artificially introduced into many countries that are not within their native range. In some cases, they have disturbed the natural ecosystem in the invaded area. On Okinoshima Island in Wakayama Prefecture, Japan, exotic deer were introduced from Taiwan in 1955 and have since bred in the wild, raising concerns about their invasion into the habitats of, and hybridization with, the na ...
DOI:
10.3106/ms2019-0048

32. Dental Microwear Texture Analysis in Two Ruminants, Japanese Serow (Capricornis crispus) and Sika Deer (Cervus nippon), from Central Japan

Author:
Konoka Aiba; Shingo Miura; Mugino O. Kubo
Source:
Mammal study 2019 v.44 no.3 pp. 183-192
ISSN:
1348-6160
Subject:
Capricornis; Cervus nippon; browsing; deer; diet; foraging; graminoids; grazing; herbivores; interspecific variation; surface roughness; sympatry; texture; Japan
Abstract:
... Dental microwear texture analysis (DMTA) can be used to quantitatively evaluate tooth surface roughness and has been used to distinguish herbivorous ungulates according to interspecific dietary differences among grazers, browsers, and mixed feeders. Moreover, DMTA has been applied among local populations with intraspecific dietary variation. In general, the tooth surfaces of grazing species/popula ...
DOI:
10.3106/ms2018-0081

33. Genetic Differentiation Among the Breeding Areas of the Spotted Seal, Phoca largha, Around Hokkaido, Japan

Author:
Noriko Azuma; Rena Negishi; Mari Kobayashi
Source:
Mammal study 2020 v.45 no.1 pp. 77-83
ISSN:
1348-6160
Subject:
Phoca largha; breeding sites; cytochrome b; genes; genetic variation; haplotypes; mitochondria; mitochondrial genome; population structure; Japan
Abstract:
... We investigated the population structure of the spotted seal, Phoca largha, around Hokkaido, Japan, inferred from sequence variations of the mitochondrial cytochrome b gene. Twenty-six haplotypes were identified in 52 individuals, and 21 of them were newly found in the present study. To detect population structure, samples were divided into three groups—Mamiya, Okhotsk, and Habomai—based on breedi ...
DOI:
10.3106/ms2019-0039

34. Genetic Structure of the Ryukyu Wild Boar Population on Tokunoshima Island (Japan) Based on Modern and Ancient DNA Analyses: Evidence of Recent Gene Flow from Pigs to Wild Boars

Author:
Ryohei Takahashi; Ryo Gushiken; Ken Nagata; Akito Shinzato; Sachi Sri Kantha; Mirai Yasuda
Source:
Mammal study 2019 v.44 no.3 pp. 157-171
ISSN:
1348-6160
Subject:
Sus scrofa; alleles; archaeology; gene flow; genetic similarity; genetic structure; haplotypes; mitochondrial DNA; pseudogenes; swine; wild boars; Japan
Abstract:
... We investigated the genetic structure among populations of the Ryukyu wild boar (Sus scrofa riukiuanus) on Tokunoshima Island by analyzing DNA from modern and archaeological samples. Four and two mtDNA haplotypes were found in the modern and archaeological samples, respectively. One haplotype was shared between the modern and archaeological samples. Of the seven haplotypes, four were only found on ...
DOI:
10.3106/ms2018-0046

35. How Does the Japanese Water Shrew Chimarrogale platycephalus Cross the Concrete Walls of Check Dams?

Author:
Hiroaki Saito; Hiroshi Hashimoto; Teruaki Hino; Masaharu Motokawa
Source:
Mammal study 2019 v.44 no.1 pp. 1-11
ISSN:
1348-6160
Subject:
concrete; dams (hydrology); rivers; sediments; shrews; streams; surveys; Japan
Abstract:
... The concrete walls of check dams are considered a physical barrier for aquatic and semiaquatic animals that inhabit mountain streams. Traveling behaviors around concrete check dams by the Japanese water shrew Chimarrogale platycephalus, a semi-aquatic mammal, were directly observed via radio-tracking in Kamikoshi Stream in central Honshu, Japan. Traveling behaviors were mainly observed on the wet ...
DOI:
10.3106/ms2017-0056

36. Infant Pelage Color Change and Infant Handling in Captive Black-and-White Colobus

Author:
Taiki Okumura; Kei Nemoto; Colin A. Chapman; Ikki Matsuda
Source:
Mammal study 2020 v.45 no.4 pp. 347-352
ISSN:
1348-6160
Subject:
Colobus guereza; Japan; body weight; color; fur; monkeys; neonates; social behavior
Abstract:
... Colobine monkeys generally spend less time each day engaged in social interactions than other primates. However, a notable feature of their social interaction involves females exchanging infants (i.e., infant handling). Here, we report on the handling of an infant in relation to pelage color change in a group of black-and-white colobus (Colobus guereza) housed in the Japan Monkey Centre. We found ...
DOI:
10.3106/ms2019-0081

37. Notes on Forefoot Characteristics of the Ryukyu Long-Furred Rat, Diplothrix legata, for Its Arboreal Lifestyle

Author:
Masahiro A. Iwasa; Yukibumi Kaneko; Shin-ichiro Kawada
Source:
Mammal study 2020 v.45 no.3 pp. 253-258
ISSN:
1348-6160
Subject:
Japan; Zinnia; branches; geographical variation; lifestyle; rats
Abstract:
... Forefoot characteristics of the Ryukyu long-furred rat, Diplothrix legata, in the Amami-oshima, Tokunoshima, and Okinawajima Islands of the southern part of Japan (the Nansei Archipelago), were analyzed morphologically considering its arboreal lifestyle. The presence of a nail on the pollex was confirmed and seemed to be regarded as an arboreal feature, based on the presence of nails in other arbo ...
DOI:
10.3106/ms2019-0076

38. Population Genetic Study of the Lesser Japanese Mole Mogera imaizumii using Novel Microsatellite Markers with Special Reference to Sex-Biased Dispersal

Author:
Shin S. Satoh; Chie Murata; Kenji Yoshida; Kiyotaka Shibata; Hidetoshi B. Tamate
Source:
Mammal study 2019 v.44 no.2 pp. 91-97
ISSN:
1348-6160
Subject:
females; genetic analysis; genetic markers; genetic relationships; genetic variation; inbreeding; males; moles; population structure; radio telemetry; Japan
Abstract:
... Sex-biased dispersal (SBD) is usually accounted for by the consequences of resource competition, inbreeding avoidance, and breeding competition. Although SBD has been reported in many mammalian species, little is known about it in subterranean species, like moles, whose dispersal from a natal place cannot be easily studied using conventional methods such as direct observations and radio-telemetry. ...
DOI:
10.3106/ms2018-0031

39. Records of Sika Deer Cervus nippon from the Southern Kuril Islands in 1986–2019, with Special Reference to a Continuous Record of Living Deer on Kunashir Island Since 2017

Author:
Evgeniy E. Kozlovskiy; Aleksandr A. Kisleiko; Tomoko Fukuda; Kuniko Kawai; Alexei V. Abramov; Satoshi D. Ohdachi
Source:
Mammal study 2020 v.45 no.2 pp. 167-171
ISSN:
1348-6160
Subject:
Cervus nippon; Japan; mammals
Abstract:
... The sika deer (Cervus nippon) is native to eastern Asia and commonly occurs on Hokkaido Island, northern Japan. The nearby localities of the southern Kuril Islands, located east of Hokkaido, have not been regarded as part of the sika deer's regular range, despite isolated observations and trace evidence described before 2017. Here we consolidate the information of the sika deer in the southern Kur ...
DOI:
10.3106/ms2020-0008

40. Rediscovery of Otters on the Tsushima Islands, Japan by Trail Cameras

Author:
Nozomi Nakanishi; Masako Izawa
Source:
Mammal study 2019 v.44 no.3 pp. 215-220
ISSN:
1348-6160
Subject:
Prionailurus bengalensis euptilurus; cameras; habitats; islands; sago; Japan; Korean Peninsula
Abstract:
... Otters are thought to be extinct in Japan, although they were widely distributed there until the early 20th century. Records of otters on Tsushima Islands, located between Kyushu and the Korean Peninsula, were found only in two sources from about 1735 and 1809, and there has been no evidence of their existence since the middle of 19th century until now. We set infrared trail cameras to monitor the ...
DOI:
10.3106/ms2018-0043

41. Contrasting Effect of Artificial Grasslands on the Intensity of Deer Browsing and Debarking in Forests

Author:
Kanoko Takarabe; Hayato Iijima
Source:
Mammal study 2019 v.44 no.3 pp. 173-181
ISSN:
1348-6160
Subject:
Cervus nippon; browsing; debarking; deer; environmental factors; foraging; forests; herbivores; keystone species; landscapes; meadows; pastures; probability; trees; understory; Japan
Abstract:
... Deer can strongly affect other species as a keystone species. The intensity of their herbivory impact on forest vegetation is suggested to be affected by not only deer density but also by other environmental factors such as landscape components. Especially, artificial grasslands such as pastures and meadows possibility affect deer impact on forest vegetation by altering deer foraging behavior. The ...
DOI:
10.3106/ms2018-0082

42. Dietary Overlap But Spatial Gap between Sympatric Japanese Serow (Capricornis crispus) and Sika Deer (Cervus nippon) on Eastern Shikoku, Japan

Author:
Asuka Yamashiro; Yoshinori Kaneshiro; Yoichi Kawaguchi; Tadashi Yamashiro
Source:
Mammal study 2019 v.44 no.4 pp. 261-267
ISSN:
1348-6160
Subject:
Capricornis; Cervus nippon; altitude; cameras; grasslands; habitats; sympatry; temperate zones; topographic slope; ungulates; Japan
Abstract:
... Spatial separation and dietary differences may allow the coexistence of similar sized ungulate species. Over the past two decades, populations of the sika deer (Cervus nippon) have increased markedly and overlapped with the habitats of the Japanese serow (Capricornis crispus). Recently, the Japanese serow population has declined and shifted its habitat from higher to lower altitudes in Shikoku, Ja ...
DOI:
10.3106/ms2018-0072

43. Feeding Habits of Asian Black Bears (Ursus thibetanus) in Relation to the Abundance and Timing of Fruiting in 13 Tree Species

Author:
Ami Nakajima; Shinsuke Koike; Koji Yamazaki; Chinatsu Kozakai; Yui Nemoto; Takashi Masaki; Koichi Kaji
Source:
Mammal study 2018 v.43 no.3 pp. 167-178
ISSN:
1348-6160
Subject:
Quercus mongolica; Ursus thibetanus; autumn; foods; forage; fruits; mountains; summer; trees; Japan
Abstract:
... We examined the relationship between the feeding habits of Asian black bears (Ursusthibetanus) and fruit availability during summer and autumn from 2008 to 2011 in the Ashio-Nikko Mountains, Japan. Our main questions were as follows: 1) How does the availability of multiple fruit species influence the feeding habits during summer and autumn? and 2) When do bears begin to forage on hard mast in rel ...
DOI:
10.3106/ms2017-0032

44. Hybridization between Native and Introduced Individuals of Sika Deer in the Central Part of Toyama Prefecture

Author:
Saifun Nahaer Eva; Yuji Yamazaki
Source:
Mammal study 2018 v.43 no.4 pp. 269-274
ISSN:
1348-6160
Subject:
Bayesian theory; Cervus nippon; ecosystems; gene pool; genetic markers; indigenous species; introduced species; introgression; invasive species; microsatellite repeats; mitochondrial DNA; Japan
Abstract:
... In recent decades, invasive animals have disturbed the native ecosystem, via intraspecific and interspecific genetic hybridization. Previously, maternally-inherited mitochondrial DNA analysis detected two genetically distinct lineages of the sika deer (Cervus nippon) in the Japanese Archipelago and revealed the coexistence of both lineages mainly in the central part of Toyama Prefecture in Japan. ...
DOI:
10.3106/ms2018-0006

45. Low genetic diversity in an isolated red fox (Vulpes vulpes) population on Mt. Hakodate, Japan, revealed by microsatellite analyses of fecal samples

Author:
Yosuke Amaike; Takahiro Murakami; Ryuichi Masuda
Source:
Mammal study 2018 v.43 no.3 pp. 141-152
ISSN:
1348-6160
Subject:
Vulpes vulpes; adults; feces; foxes; gene flow; genetic variation; genotyping; microsatellite repeats; population size; urban areas; Japan
Abstract:
... Mt. Hakodate, Hokkaido, is a small mountain geographically isolated by the sea and urban area, and some red foxes (Vulpes vulpes) live there. In consideration of the specific geographical environment, we made a hypothesis that the fox population on Mt. Hakodate is small in size and isolated, and consequently its genetic variation is low, and then tested it. To investigate the genetic variation, we ...
DOI:
10.3106/ms2017-0055

46. Non-Invasive Age Estimation by Cranial Suture Closure in Japanese Sika Deer (Cervus nippon)

Author:
Jinwoo Oh; Masato Minami; Suzuna Ikeda; Seiki Takatsuki; Nobumasa Oonishi; Naoko Higuchi; Ayumi Okada; Junpei Kimura; Daisuke Koyabu
Source:
Mammal study 2019 v.44 no.3 pp. 147-155
ISSN:
1348-6160
Subject:
Cervus nippon; age determination; Japan
Abstract:
... Although counting cementum annuli of lower incisor is a reliable method for age estimation in cervids, it inevitably involves the destruction of specimens. Here we studied the relationship between cranial suture closure patterns and age to test the possibility of cranial suture closure as a non-destructive age indicator in sika deer (Cervus nippon) specimens from Kinkazan Island, Japan, for which ...
DOI:
10.3106/ms2018-0065

47. Phylogeography of the Japanese White-Toothed Shrew (Eulipotyphla: Soricidae): A Clear Division of Haplogroups between Eastern and Western Japan and their Recent Introduction to Some Regions

Author:
Satoshi D. Ohdachi; Kazunori Yoshizawa; Yasushi Takada; Masaharu Motokawa; Masahiro A. Iwasa; Satoru Arai; Junji Moribe; Yasushi Uematsu; Eiichi Sakai; Takashi Tateishi; Hong-Shik Oh; Gohta Kinoshita
Source:
Mammal study 2018 v.43 no.4 pp. 245-259
ISSN:
1348-6160
Subject:
Crocidura; DNA; cytochrome b; genes; heterozygosity; mitochondria; mitochondrial genome; mutation; nucleotide sequences; phylogeny; phylogeography; shrews; Japan; South Korea
Abstract:
... The Japanese white-toothed shrew (Crocidura dsinezumi) is a species endemic to Japan. For this species, only minimal phylogeographic investigations have been conducted. We obtained DNA sequences of mitochondrial cytochrome b and control region and nuclear ApoB genes for 191 individuals of C. dsinezumi from 107 locations collected throughout its known range. In the phylogenetic trees based on mitoc ...
DOI:
10.3106/ms2017-0059

48. Reproductive Histories of Asian Black Bears Can be Determined by Cementum Annuli Width

Author:
Kahoko Tochigi; Hiroo Tamatani; Chinatsu Kozakai; Akino Inagaki; Tomoko Naganuma; Hiroaki Myojo; Koji Yamazaki; Shinsuke Koike
Source:
Mammal study 2018 v.43 no.4 pp. 261-268
ISSN:
1348-6160
Subject:
Ursus thibetanus; adults; females; food availability; lactation; life history; parturition; progeny; reproductive success; yearlings; Japan
Abstract:
... Very little is known about the cementum annuli of Asian black bears (Ursus thibetanus). We collected the first premolar tooth from adult female bears in central Japan to investigate whether reproductive history was reflected in cementum annuli width; previous studies have indicated that this is possible in other bear species. We calculated the proportional width index (PWI) value as an index of an ...
DOI:
10.3106/ms2018-0016

49. Seed Feeding Behavior of Diplothrix legata (Muridae: Rodentia): Effects on Germination of Five Plants in Okinawajima Island, Japan

Author:
Reina Nago; Shun Kobayashi; Teruo Kinjo; Kozue Ogimi; Akari Sinjo; Shinobu Namisato; Anna Futamatagawa; Genwa Higa; Masako Izawa
Source:
Mammal study 2019 v.44 no.2 pp. 129-134
ISSN:
1348-6160
Subject:
Actinidia; Ficus erecta; Melastoma candidum; Muridae; Prunus campanulata; Zinnia; excretion; feces; feeding behavior; fruits; germination; granivores; rats; raw fruit; seeds; Japan
Abstract:
... This study examined how seed feeding by the Ryukyu long-furred rat Diplothrix legata affects germination of five plants (Cerasus campanulata, Actinidia rufa, Ficus erecta, Oreocnide pedunculata, and Melastoma candidum) in Okinawajima Island, Japan. The germination rates of seeds from fresh fruit and fecal pellets of two captive rats, as well as the feeding behaviors, were observed. Most of C. camp ...
DOI:
10.3106/ms2018-0049

50. Bark-feeding damage of sugi and hinoki cypress caused by sika deer, Cervus nippon: Does the sika deer prefer bark of hinoki cypress to sugi?

Author:
Akira Sano
Source:
Mammal study 2017 v.42 no.2 pp. 105-110
ISSN:
1348-6160
Subject:
Cervus nippon; Chamaecyparis obtusa; Cryptomeria japonica; bark; debarking; plantations; trees; Japan
Abstract:
... Occurrence of bark-feeding damage by sika deer (Cervus nippon) was examined at 26 mixed plantations comprised of both sugi (Cryptomeria japonica) and hinoki cypress (Chamaecyparis obtusa) in Mie Prefecture, central Japan. There was no significant difference in damage ratios with the tree species in plantations with only slight damage. In plantations with a damage ratio over 5% in either tree speci ...
DOI:
10.3106/041.042.0205