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You searched for: Journal Mammal study Remove constraint Journal: Mammal study Publication Year 2019 Remove constraint Publication Year: 2019 Subject Japan Remove constraint Subject: Japan Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Aneuploid Chromosome Constitutions of the Small Japanese Field Mouse, Apodemus argenteus, in the Western Mountainous Area of Kanagawa Prefecture, Honshu, Japan

Author:
Myoshu, Hikari; Iwasa, Masahiro A.
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

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

Author:
Takarabe, Kanoko; Iijima, Hayato
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

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

Author:
Aiba, Konoka; Miura, Shingo; Kubo, Mugino O.
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

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

Author:
Yamashiro, Asuka; Kaneshiro, Yoshinori; Kawaguchi, Yoichi; Yamashiro, Tadashi
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

5. 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:
Takahashi, Ryohei; Gushiken, Ryo; Nagata, Ken; Shinzato, Akito; Kantha, Sachi Sri; Yasuda, Mirai
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

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

Author:
Saito, Hiroaki; Hashimoto, Hiroshi; Hino, Teruaki; Motokawa, Masaharu
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

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

Author:
Oh, Jinwoo; Minami, Masato; Ikeda, Suzuna; Takatsuki, Seiki; Oonishi, Nobumasa; Higuchi, Naoko; Okada, Ayumi; Kimura, Junpei; Koyabu, Daisuke
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

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

Author:
Satoh, Shin S.; Murata, Chie; Yoshida, Kenji; Shibata, Kiyotaka; Tamate, Hidetoshi B.
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

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

Author:
Nakanishi, Nozomi; Izawa, Masako
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

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

Author:
Nago, Reina; Kobayashi, Shun; Kinjo, Teruo; Ogimi, Kozue; Sinjo, Akari; Namisato, Shinobu; Futamatagawa, Anna; Higa, Genwa; Izawa, Masako
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