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You searched for: Journal name Mammal study Remove constraint Journal name: Mammal study
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1. 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

2. Acoustic Detection of an Unknown Bat Species in Okinawa

Author:
Vladimir Dinets; Nicholas R. Friedman; Masashi Yoshimura; Masako Ogasawara; Evan P. Economo
Source:
Mammal study 2020 v.45 no.4 pp. 353-356
ISSN:
1348-6160
Subject:
Chiroptera; Ryukyu Archipelago; acoustics; echolocation; mammals; rare species; ultrasonics
Abstract:
... Pipistrelles of the genus Hypsugo are among the rarest bats in Japan, known from a handful of records. In June 2018, a sequence of echolocation calls apparently by a bat of this genus was recorded by an automatic ultrasound recorder on the island of Okinawa. The calls closely resemble H. pulveratus, a Chinese species never before recorded in Japan, and H. alaschanicus, a very rare species in Japan ...
DOI:
10.3106/ms2019-0077

3. Activity of Male Internal Genitalia and Breeding Season in the Lesser Japanese Mole, Mogera imaizumii, Inferred from Morphometric and Histological Analyses

Author:
Source:
Mammal study 2016 v.41 no.1 pp. 25-30
ISSN:
1343-4152
Subject:
breeding; breeding season; epididymis; genitalia; males; moles; morphometry; seminiferous tubules; spermatids; spermatocytes; spermatogonia; spring; summer; winter; Japan
Abstract:
... We researched seasonal reproductive activity in the lesser Japanese mole, Mogera imaizumii, by morphometrical and histological methods for male internal genitalia using samples from Kanagawa Pref., central Honshu, Japan. On the basis of the weights of testis and the epididymis, we determined that their weights become higher during February–April. On the other hand, the histological profiles of sem ...
DOI:
10.3106/041.041.0105

4. Ag-NORs Analysis in Three Species of Red-Backed Voles, with a Consideration of Generic Allocation of Anderson's Red-Backed Vole

Author:
Suzuki Takuma; Obara Yoshitaka; Tsuchiya Kimiyuki; Oshida Tatsuo; Iwasa Masahiro A.
Source:
Mammal study 2014 v.39 no.2 pp. 91-97
ISSN:
1343-4152
Subject:
Clethrionomys; Eothenomys; acrocentric chromosomes; autosomes; chromosome banding; diploidy; karyotyping; sex chromosomes; staining; voles
Abstract:
... To further make karyotaxonomic characterization of Anderson's red-backed vole (Eothenomys andersoni) certain, Ag-NOR-carrying chromosomes were identified by sequential G-band/silver staining in the red-backed voles Myodes (formerly Clethrionomys) rufocanus (Mru), E. andersoni (Ean), and E. smithii (Esm). These voles had the same diploid number (2n = 56), and their karyotypes scarcely differed from ...
DOI:
10.3106/041.039.0204

5. Age- and Sex-Associated Differences in the Diet of the Asian Black Bear: Importance of Hard Mast and Sika Deer

Author:
Tomoko Naganuma; Shinsuke Koike; Rumiko Nakashita; Chinatsu Kozakai; Koji Yamazaki; Shino Furusaka; Koichi Kaji
Source:
Mammal study 2020 v.45 no.2 pp. 155-166
ISSN:
1348-6160
Subject:
Cervus nippon; Ursus thibetanus; Vespidae; adults; breeding season; deer; diet; overeating; stable isotopes
Abstract:
... In the context of reducing human–bear conflict, understanding potential foraging variation within a bear population yields insights into differences in foraging strategy according to an individual's sex and age. Stable isotope analyses reveal information regarding assimilated dietary components. To confirm the foraging variation of Asian black bears and assess its underlying factors, we conducted ...
DOI:
10.3106/ms2019-0051

6. Alliance Formation of Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) off Amakusa, Western Kyushu, Japan

Author:
Miki Nishita; Miki Shirakihara; Naoko Iwasa; Masao Amano
Source:
Mammal study 2017 v.42 no.3 pp. 125-130
ISSN:
1348-6160
Subject:
Tursiops aduncus; coasts; data collection; dolphins; females; males; philopatry; Japan
Abstract:
... Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Amakusa-Shimoshima, approximately 200 individuals, form relatively large groups frequently exceeding 100 individuals and show high site fidelity to the area around Tsuji Island, northern coast of Amakusa-Shimoshima. This suggests that individual dolphins may have long interaction times with many other individuals. Consequently, competition be ...
DOI:
10.3106/041.042.0302

7. 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

8. Are Northeastern Forests of Bangladesh Empty? Insights from Camera-Trapping into Spatiotemporal Activity Pattern of Mammals in a Semi-Evergreen National Park

Author:
Tania Zakir; Harish Debbarma; Rafia Mahjabin; Rasel Debbarma; Zaber Khan; Md. Mizanur Rahman Minu; Fatima Tuz Zahura; Muntasir Akash
Source:
Mammal study 2021 v.46 no.4 pp. 1-17
ISSN:
1348-6160
Subject:
Cuon alpinus; Felis chaus; Herpestidae; Prionailurus bengalensis; Scandentia; biodiversity; camera trapping; forests; national parks; Bangladesh
Abstract:
... Bangladesh holds 191 km² semi-evergreen northeastern (NE) forests where systematic camera-trapping has never been carried out. An effort of 587 trap nights in Satchari National Park, a NE forest, revealed ten carnivores, two ungulates, two primates, two rodents, and one treeshrew (12 threatened in Bangladesh; of which three globally threatened; dhole and northern treeshrew were new discoveries). P ...
DOI:
10.3106/ms2020-0114

9. Are there Sexual Differences in the Autumn Food Habits of Raccoon Dogs (Nyctereutes procyonoides) in Suburban Area?

Author:
Ayaka Hasegawa; Yusuke Goto; Koji Yamazaki
Source:
Mammal study 2021 v.47 no.1 pp. 39-45
ISSN:
1348-6160
Subject:
Nyctereutes procyonoides; Procyon lotor; autumn; females; forage; humans; males; municipal solid waste; stomach; suburban areas
Abstract:
... We studied the autumn (September–November) food habits of the raccoon dog (Nyctereutes procyonoides) by sampling the stomach contents of 64 individuals (male, n = 31; female, n = 33) killed on national roads in Ibaraki Prefecture. Our aim was to examine sex differences in the autumn food habits of raccoon dogs in suburban area where human related disturbances can occur on the raccoon dogs. The fre ...
DOI:
10.3106/ms2020-0079

10. Autumn Dietary Overlaps among Three Sympatric Mesocarnivores in the Central Part of Stara Planina Mountain, Bulgaria

Author:
Hiroshi Tsunoda; Stanislava Peeva; Evgeniy Raichev; Kairi Ito; Yayoi Kaneko
Source:
Mammal study 2019 v.44 no.4 pp. 275-281
ISSN:
1348-6160
Subject:
Canis aureus; Martes foina; Vulpes vulpes; carnivores; eating habits; fruits; rodents; sympatry; Bulgaria
Abstract:
... Food habits and dietary overlaps of the three sympatric mesocarnivores (golden jackal Canis aureus, red fox Vulpes vulpes, and stone marten Martes foina) in a mountain-forest region in central Bulgaria were investigated. These species showed high dietary overlaps, commonly consuming rodents and fruits through studied period. Moreover, their dietary overlaps were higher in November that in the earl ...
DOI:
10.3106/ms2018-0068

11. 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

12. Bat Fatalities at Wind Farms in Taiwan

Author:
Cheng-Han Chou; Tsung-Yu Hsieh; Wei-Ting Liu; Ta-Ching Chou; Yu-Po Huang; Jens Rydell
Source:
Mammal study 2017 v.42 no.2 pp. 121-124
ISSN:
1348-6160
Subject:
Eptesicus; Myotis formosus; Pipistrellus; Scotophilus; coasts; death; habitats; wetlands; wind farms; wind power; Taiwan
Abstract:
... We collected bat carcasses at three wind farms in Taiwan, located along the west coast mostly near the sea and/or in former coastal wetland habitats. We found 43 bat carcasses, mostly of common aerial-hawking species such as Pipistrellus abramus and Scotophilus kuhlii, but the island endemics Eptesicus serotinus horikawai and Myotis formosus flavus were also recovered. All bat species affected are ...
DOI:
10.3106/041.042.0208

13. Bats (Chiroptera) of Bidoup Nui Ba National Park, Dalat Plateau, Vietnam

Author:
Son Truong Nguyen; Thomas J. O'Shea; Jeffery A. Gore; Khoi Vu Nguyen; Thanh Trung Hoang; Masaharu Motokawa; Phuong Huy Dang; Minh Duc Le; Tham Thi Nguyen; Tatsuo Oshida; Hideki Endo; Tuan Anh Tran; Hai Tuan Bui; Tu Ngoc Ly; Duong Thuy Vu; Hang Thi Chu; Tu Tan Vuong
Source:
Mammal study 2021 v.46 no.1 pp. 53-68
ISSN:
1348-6160
Subject:
Chiroptera; cryptic species; dry season; echolocation; habitats; insectivores; lactation; mammals; national parks; reproduction; species richness; wet season; Vietnam
Abstract:
... We determined species diversity, seasonal reproduction, and echolocation patterns in the bat community of Bidoup Nui Ba National Park (BNBNP), Lam Dong Province, on the Dalat Plateau of the Central Highlands of Vietnam. We documented 27 species with 211 individuals captured in 26 994 m² mist-net-hours and 3015 m² harp-trap-hours of effort. We found five species of pteropodids and 22 species of ins ...
DOI:
10.3106/ms2020-0024

14. Behavioral Traits of Damage-Causing Sika Deer: Open Land Preference

Author:
Honda Takeshi; Miyagawa Yoshiki; Kuwata Hiroshi; Yamasaki Shuhei; Iijima Hayato
Source:
Mammal study 2014 v.39 no.1 pp. 27-32
ISSN:
1343-4152
Subject:
Cervus nippon; animal behavior; behavior change; cameras; crop damage; deer; orchards; population growth; population size; summer; wildlife; wildlife damage management
Abstract:
... Although population size is one factor affecting the intensity of wildlife damage, the relationship between damage and population size is unclear. We propose a new hypothesis that: the open land preference affects the intensity of crop damage. We defined the open land preference based on the behavioral traits of each individual showing dependence on farmland. If the open land preference of a popul ...
DOI:
10.3106/041.039.0105

15. 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

16. Body Temperature Measurement Reveals the Reproductive Profile of Female Apodemus speciosus under Laboratory and Field Conditions

Author:
Akira Kuroyanagi; Rina Ukyo; Yoshinobu Kodama; Takeshi Eto; Yoshinobu Okubo; Ikuo Kobayashi; Seiji Ieiri; Tetsuo Morita; Shinsuke H. Sakamoto
Source:
Mammal study 2022 v.47 no.3 pp. 177-187
ISSN:
1348-6160
Subject:
Apodemus speciosus; body temperature; females; lactation; mammals; parturition; pregnancy
Abstract:
... This study illustrated body temperature (Tb) fluctuation during reproduction and discussed the effectiveness of measuring Tb for predicting the reproductive profile of female Apodemus speciosus both under laboratory and field conditions. Tb fluctuation was monitored for four breeding events in the laboratory and for three in the field. Individual variation in Tb fluctuation during reproduction was ...
DOI:
10.3106/ms2021-0048

17. Breeding Behavior of Mara [Dolichotis patagonum (Zimmermann, 1780)] in the Monte-Chaco Ecotone of Argentina

Author:
Ailin Gatica; Natalia M. Denkiewicz; Ana C. Ochoa
Source:
Mammal study 2019 v.44 no.4 pp. 233-241
ISSN:
1348-6160
Subject:
adults; alloparental behavior; breeding; breeding behavior; breeding season; cameras; ecotones; environmental factors; habitats; intraspecific variation; juveniles; monogamy; national parks; phylogeny; rodents; social behavior; survival rate; Argentina
Abstract:
... Phylogenetic constraints and ecological factors have been suggested as alternative key factors in the evolution of animal sociality. The mara (Dolichotis patagonum) is a cavid rodent endemic to Argentina that has the particularity of being monogamous with a communal breeding system. Researches on reproductive behavior of mara in its natural habitat have been restricted to Peninsula de Valdés (PV). ...
DOI:
10.3106/ms2019-0006

18. Camera-Trapping Two Felid Species: Monitoring Eurasian Lynx (Lynx lynx) and Wildcat (Felis silvestris) Populations in Mixed Temperate Forest Ecosystems

Author:
Anıl Soyumert
Source:
Mammal study 2020 v.45 no.1 pp. 41-48
ISSN:
1348-6160
Subject:
Felis silvestris; Lynx lynx; camera trapping; cameras; carnivores; cats; fauna; forest ecosystems; habitats; hybridization; statistical analysis; surveys; temperate forests; wildlife; Turkey (country)
Abstract:
... Documenting reliable and concrete data makes camera-trapping an appropriate tool for many secretive large mammals. Camera-trapping has been widely used for detecting the large mammal fauna of Turkey. However, systematic surveys and comprehensive assessments are still not sufficient for assessing wildlife populations in the country. In the present study, populations of Eurasian lynx (Lynx lynx) and ...
DOI:
10.3106/ms2019-0046

19. Can Ferret Badgers (Melogale moschata) Cross the Rabies Epidemic Boundary in Western Taiwan?

Author:
Iang Huang; Han-Yu Lin; Guo-Jing Weng
Source:
Mammal study 2020 v.45 no.3 pp. 189-199
ISSN:
1348-6160
Subject:
Melogale moschata; ferrets; gene flow; genetic variation; immunization; microsatellite repeats; rabies; rivers; Taiwan
Abstract:
... Taiwan was considered rabies-free for > 50 years until the disease reemerged in its ferret badger population (Melogale moschata) in 2013. Although it is still expanding slowly northward in eastern Taiwan, its spread in the west has thus far been halted by the Da-An River. To prevent diffusion of rabies, an immunization zone should be established along the epidemic boundary before further rabies ex ...
DOI:
10.3106/ms2019-0024

20. 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