Mammal Study最新文献_第10页

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 日本长崎县佐世保地区新建立的鹿种群的遗传分析没有发现台湾梅花鹿遗传干扰的证据

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-17 DOI: 10.3106/ms2020-0084

J. Nagata, M. Yasuda, A. Yamashiro

{"title":"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","authors":"J. Nagata, M. Yasuda, A. Yamashiro","doi":"10.3106/ms2020-0084","DOIUrl":"https://doi.org/10.3106/ms2020-0084","url":null,"abstract":"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), which is listed as an invasive alien species in Japan. There is concern about hybridization between this subspecies and the native Japanese sika deer. In the present study, we used genetic methods to assess the current status of the deer in the Sasebo area of Nagasaki Prefecture, particularly its origin and hybridization. Our study showed that the deer did not originate from Formosan sika deer, and we found no evidence of hybridization. The deer in the Sasebo area were found to have a haplotype included in the southern Japanese sika deer lineage. The current study was unable to identify the specific origin of the deer due to limitations in PCR-RFLP and mitochondrial DNA sequencing analysis.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44961009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Selection of the Young Coconut Mesocarp by the Sulawesi Babirusa (Babyrousa celebensis) 苏拉威西岛Babirusa (Babyrousa celebensis)对幼椰子中果皮的选择

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0059

Masaaki Ito, A. Macdonald, K. Leus, Yamato Hasegawa, İ. Balık, I. W. G. Bandem Arimbawa, I. D. G. Agung Atmaja

{"title":"Selection of the Young Coconut Mesocarp by the Sulawesi Babirusa (Babyrousa celebensis)","authors":"Masaaki Ito, A. Macdonald, K. Leus, Yamato Hasegawa, İ. Balık, I. W. G. Bandem Arimbawa, I. D. G. Agung Atmaja","doi":"10.3106/ms2020-0059","DOIUrl":"https://doi.org/10.3106/ms2020-0059","url":null,"abstract":"Abstract. The feeding behaviours of the Sulawesi babirusa (Babyrousa celebensis) in terms of its preference to eat the mesocarp, or husk, of immature coconuts (Cocos nucifera) and the feeding marks on leftover coconuts were observed. Additionally, to explore the physicochemical factors behind this preference, a comparative study was conducted on the basal and apical parts of the coconut mesocarp. The breaking load, macronutrient content, and volatile compounds were examined. The findings were as follows: 1) Babirusas always sniffed the cut surface of the coconut before eating. They then scooped out the basal part of the mesocarp where the fibres are more visibly scarce with their mandibular incisors and ate more than 7.6 times the surface area at this end than at the apical end. 2) The preferred basal part of the immature mesocarp had a lower breaking load. 3) The gas chromatography-mass spectrophotometry (GC-MS) chromatogram of the basal sample showed larger peak areas for 2-methylbutanal and 3-methylbutanal. In conclusion, the babirusa preferred the basal part of the immature coconut mesocarp, and the preferred basal part had distinctive features in terms of hardness and volatile profile, which is probably characterised by the presence of 2-methylbutanal and 3-methylbutanal.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43177342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observation of Infanticide in the Particolored Flying Squirrel (Hylopetes alboniger) from a Forest in Northeastern Bangladesh 孟加拉东北部森林颗粒鼯鼠(Hylopetes alboniger)杀婴行为观察

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0098

Sabit Hasan, Hassan Al-Razi, Tanvir Ahmed, Habibon Naher, S. Muzaffar

引用次数: 0

Spatial Genetic Structure of the Sika Deer (Cervus nippon) Population on Yakushima: Significant Genetic Differentiation on a Small Island 屋久岛梅花鹿种群的空间遗传结构:一个小岛上显著的遗传分化

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0088

Chisato Terada, T. Yahara, Arika Kuroiwa, T. Saitoh

{"title":"Spatial Genetic Structure of the Sika Deer (Cervus nippon) Population on Yakushima: Significant Genetic Differentiation on a Small Island","authors":"Chisato Terada, T. Yahara, Arika Kuroiwa, T. Saitoh","doi":"10.3106/ms2020-0088","DOIUrl":"https://doi.org/10.3106/ms2020-0088","url":null,"abstract":"Abstract. The sika deer population on Yakushima Island exhibits high genetic diversity despite the small size of the island. We hypothesized that the high genetic diversity of the population had been maintained by the population structure, which included several subpopulations among which gene flow was limited. To test this hypothesis, we analyzed the spatial genetic structure of the population using 12 microsatellite loci. Two and four subpopulations were detected by STRUCTURE (stN and stS) and GENELAND (glN, glE, glS, and glW) software, respectively. The basic genetic structure assigned by STRUCTURE was supported by GENELAND, while stN and stS were further separated into two subpopulations (glN and glE; glS and glW, respectively) by GENELAND. All pairwise genetic differentiations between the two and four subpopulations were significant. These results demonstrated that the Yakushima population was structured into genetically distinct subpopulations. Although the location of the western boundary between stN and stS corresponded with a large river, no landscape or biological feature could be identified for the eastern boundary. We discussed the relationships between the genetic structure and management units designed by the local government and concluded that the Yakushima population should be managed based on their spatial population structures considering multiple time scales.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42159560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitochondrial DNA Haplotypes of Killer Whales around Hokkaido, Japan 日本北海道虎鲸线粒体DNA单倍型

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0072

Y. Mitani, Yuki F. Kita, S. Saino, M. Yoshioka, Hiroshi Ohizumi, Fumio Nakahara

引用次数: 2

Characterization of Molecular Markers of Testicular Cells in Red Pandas (Ailurus fulgens styani) 红熊猫睾丸细胞分子标记的鉴定

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0080

J. An, Ling He, R. Hou, Z. Cai, Dong-Hui Wang, Ke-Yu Shi, Songrui Liu, Chanjuan Yue, Yu-liang Liu

{"title":"Characterization of Molecular Markers of Testicular Cells in Red Pandas (Ailurus fulgens styani)","authors":"J. An, Ling He, R. Hou, Z. Cai, Dong-Hui Wang, Ke-Yu Shi, Songrui Liu, Chanjuan Yue, Yu-liang Liu","doi":"10.3106/ms2020-0080","DOIUrl":"https://doi.org/10.3106/ms2020-0080","url":null,"abstract":"Abstract. Self-sustained populations of captive red panda were challenged by low reproductive success rate. Defining the different types of testicular cell and increasing the knowledge of male fertility was critical for the improvement of reproductive efficiency in red panda captive populations. Here, we firstly report the histological structure in red panda testes at various ages. Besides, our data also showed that markers for red panda testicular cells including ITGA6, PLZF, THY1, VASA, DAZL, GATA4, VASA, and αSMA were expressed in adult testis tissue. To further examine the localizations of ITGA6, VASA, VIM, and αSMA, the immunohistochemical analysis was performed and the result showed the typical staining patterns of undifferentiated spermatogonia, multiple types of germ cells, Sertoli cells, and peritubular myoid cells (PMCs), respectively. For the testicular tissue digestion, two-step enzyme digestion was used to obtain the cell suspension. The red panda Sertoli cells, expressing Sertoli cell marker VIM, were cultured and conserved in this study, which can be used for red panda Sertoli cell establishment and as the feeder cells for red panda spermatogonial stem cells (SSCs) growing.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47562559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can Video Traps Reliably Detect Animals? Implications for the Density Estimation of Animals without Individual Recognition 视频陷阱能可靠地检测动物吗？对未经个体识别的动物密度估计的启示

IF 1 4区生物学

Mammal Study Pub Date : 2021-06-02 DOI: 10.3106/ms2020-0055

Gota Yajima, Yoshihiro Nakashima

{"title":"Can Video Traps Reliably Detect Animals? Implications for the Density Estimation of Animals without Individual Recognition","authors":"Gota Yajima, Yoshihiro Nakashima","doi":"10.3106/ms2020-0055","DOIUrl":"https://doi.org/10.3106/ms2020-0055","url":null,"abstract":"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 and staying times within a specific area. We tested whether commercial camera traps provided unbiased estimates of these parameters by conducting an experimental trial using a domestic dog in a city park in Japan. Additionally, we tested the effects of camera angle on the estimation of these parameters using the Bushnell camera. The Bushnell camera captured the dog 96% of the time, while the Ltl-Acorn camera missed about half of his passes. The staying time was underestimated by 4% using the Bushnell and overestimated by 25% using the Ltl-Acorn camera. The bias in density estimation was < 10% using the Bushnell camera. Camera angle did not affect detection probability, while the downward-angled cameras underestimated staying time due to the delayed trigger. We hope to share the results with manufacturers to make camera traps more suitable for animal density estimation.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41760011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Preface 前言

IF 1 4区生物学

Mammal Study Pub Date : 2021-05-05 DOI: 10.3106/46-2-e

Y. Tsuji, H. Enari

引用次数: 1

Human Effects on Habitat Use of Japanese Macaques (Macaca fuscata): Importance of Forest Edges 人类对日本猕猴栖息地利用的影响：森林边缘的重要性

IF 1 4区生物学

Mammal Study Pub Date : 2021-04-16 DOI: 10.3106/ms2020-0076

Hiroshi Ebihara, S. Takatsuki

{"title":"Human Effects on Habitat Use of Japanese Macaques (Macaca fuscata): Importance of Forest Edges","authors":"Hiroshi Ebihara, S. Takatsuki","doi":"10.3106/ms2020-0076","DOIUrl":"https://doi.org/10.3106/ms2020-0076","url":null,"abstract":"Abstract. Habitats of the Japanese macaque (Macaca fuscata) have been modified by human activities such as deforestation, conifer plantation, agriculturalization, and forest fragmentation. Such modifications likely affect habitat use of the macaques. We examined the habitat use of two macaque troops: a “forest troop” and a “cropland troop”. We focused on forest edges, which have not been previously categorized as a habitat type. Both troops frequently used deciduous broad-leaved forest in autumn and forest edges in summer. The forest troop frequently used forest-grassland edges, whereas the cropland troop frequently used forest-cropland edges. The selection index for the deciduous broad-leaved forest of the cropland troop exhibited significantly higher values than those of the forest troop in summer, autumn, and winter. Since the Japanese macaque is a forest-dweller and tends to avoid open areas, both troops may have used forests more frequently. Meanwhile, a decline in food resources in the forest due to the establishment of conifer plantations and an increase in food resources due to agriculturalization may have led to more frequent use of forest edges by the macaques. Forest edges should be treated as an independent habitat for accurate assessment of macaque habitat use.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44093732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Genetic Assessment on the Origin of Alien Macaques in the Boso Peninsula in Japan 日本博索半岛外来猕猴起源的遗传评价

IF 1 4区生物学

Mammal Study Pub Date : 2021-04-16 DOI: 10.3106/ms2020-0078

Y. Kawamoto

{"title":"Genetic Assessment on the Origin of Alien Macaques in the Boso Peninsula in Japan","authors":"Y. Kawamoto","doi":"10.3106/ms2020-0078","DOIUrl":"https://doi.org/10.3106/ms2020-0078","url":null,"abstract":"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 from the rhesus macaques in eastern China. Y-chromosome assessments with three microsatellite (Y-STR) loci detected a unique haplotype that is distributed in Japanese macaque habitats. Its origin was assessed by the TSPY (testis-specific protein on Y-chromosome) gene, suggesting the possibility of the involvement of long-tailed macaques in the Indochina region or rhesus macaques different from known source. Further investigation of historical documents and interviews disclosed the existence of a facility of long-tailed macaques planned for vaccine production in the past. This study presented novel evidence that the hybridization of Japanese macaques in the Boso Peninsula has the possibility to associate not only with rhesus macaques, but also with long-tailed macaques from the Indochina region. It is important to further monitor the status of Japanese macaques and changes in their hybridization in the peninsula for future conservation purposes.","PeriodicalId":49891,"journal":{"name":"Mammal Study","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46510352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0