Journal of Mammalogy最新文献

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Emerging risks at the vampire bat-prion interface: implications for wildlife, livestock, and public health. 吸血蝙蝠-朊病毒界面的新风险:对野生动物、牲畜和公共卫生的影响。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2026-03-12 eCollection Date: 2026-03-01 DOI: 10.1093/jmammal/gyag004
Lexi E Frank, Jason C Bartz, Peter A Larsen
{"title":"Emerging risks at the vampire bat-prion interface: implications for wildlife, livestock, and public health.","authors":"Lexi E Frank, Jason C Bartz, Peter A Larsen","doi":"10.1093/jmammal/gyag004","DOIUrl":"https://doi.org/10.1093/jmammal/gyag004","url":null,"abstract":"<p><p>The role of the Common Vampire Bat (<i>Desmodus rotundus</i>) as a vector for chronic wasting disease (CWD) remains uninvestigated, and the effects of prion exposure in vampire bats are unknown. <i>Desmodus</i> feeds on the blood of various animals including deer, livestock, and humans across its expansive distribution. Given the continued southward spread of CWD in North American cervid populations and potential for the disease to already be circulating in Mexico, where it may overlap with established <i>Desmodus</i> populations, it is critical to assess potential risks at the interface between vampire bats and prion-infected hosts. <i>Desmodus</i> is also predicted to expand its range northward, potentially establishing populations in CWD-endemic regions of the southern United States, further underscoring the need for proactive surveillance and research on the ecological and epidemiological implications of this emerging interface. We explore aspects of prion biology and the natural history of <i>Desmodus</i>, highlighting factors that may contribute to prion exposure events among vampire bats and sympatric mammals. In light of <i>Desmodus</i> feeding behaviors, vampire bats could experience elevated prion exposures over time if they encounter CWD-positive prey. We recommend risk assessments and surveillance to evaluate vampire bat-prion transmission pathways that could impact mammalian wildlife, livestock, and human health.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"107 2","pages":"400-406"},"PeriodicalIF":1.6,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13035270/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of reproductive status on foraging behavior and fecal glucocorticoid metabolite levels in wild bat-eared foxes (Otocyon megalotis). 生殖状态对野生蝙蝠耳狐觅食行为和粪便糖皮质激素代谢物水平的影响
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2026-03-11 eCollection Date: 2026-03-01 DOI: 10.1093/jmammal/gyag011
Aliza le Roux, Keafon R Jumbam, André Ganswindt
{"title":"Effect of reproductive status on foraging behavior and fecal glucocorticoid metabolite levels in wild bat-eared foxes (<i>Otocyon megalotis</i>).","authors":"Aliza le Roux, Keafon R Jumbam, André Ganswindt","doi":"10.1093/jmammal/gyag011","DOIUrl":"https://doi.org/10.1093/jmammal/gyag011","url":null,"abstract":"<p><p>Diet may be fundamental to the extensive paternal care and reduced maternal care seen in bat-eared foxes (<i>Otocyon megalotis</i>). This termite-specialist would struggle to increase its energy intake by hunting large prey or provisioning such items to mates or pups. Consequently, lactating, physiologically challenged females need to invest more time in foraging, while males spend time with pups. However, there is little empirical evidence of the impacts of parental care on foraging behavior and stress-related hormone levels in free-living bat-eared foxes. We studied foraging behavior in 20 wild bat-eared foxes for 2 years, investigating how foraging behavior and fecal glucocorticoid metabolite (fGCM) levels varied with austral season in the study population. Thereafter, we evaluated how parental status may affect foraging rates, food sizes consumed, and fGCM levels as a proxy for physiological stress. We examined these changes in parents (<i>n </i>= 3) and non-parents (<i>n </i>= 17) as seasonal \"activity\" changed-that is, breeding season (pregnant phase), denning season (pup-rearing and guarding phase), and non-breeding season (independent adult phase). Small item consumption patterns mirrored overall foraging rates, which were lowest for all foxes in winter. Males increased foraging rates in spring, while all individuals ate more large items in summer. Mean fGCM levels in the population (0.41 µg g<sup>-1</sup> organic content) were not affected by sex or austral season, but changed with seasonal activities, for parents in particular: parents had significantly lower fGCM levels in the breeding season. This may reflect reduced stress in these foxes, who successfully paired and increased their within-family socialization during the breeding season. Our findings suggest that behavioral adaptations, including foraging adaptations, are sufficient for bat-eared foxes to meet the physiological challenges of parenting. This is the first study to start unravelling the relationship between foraging rates, parenting behavior, and stress-related hormone levels in the Bat-eared Fox.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"107 2","pages":"221-227"},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13035264/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Introduction: advances in small carnivore ecology. 前言:小型食肉动物生态学研究进展。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2026-03-04 eCollection Date: 2026-03-01 DOI: 10.1093/jmammal/gyag005
Aliza le Roux, Géraldine Veron, Emmanuel Do Linh San
{"title":"Introduction: advances in small carnivore ecology.","authors":"Aliza le Roux, Géraldine Veron, Emmanuel Do Linh San","doi":"10.1093/jmammal/gyag005","DOIUrl":"https://doi.org/10.1093/jmammal/gyag005","url":null,"abstract":"","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"107 2","pages":"217-220"},"PeriodicalIF":1.6,"publicationDate":"2026-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13035266/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contrasting spatial and temporal activity patterns of little brown bats (Myotis lucifugus) at maternity roosts and swarming sites. 小棕蝠(Myotis lucifugus)在母巢和群居地的时空活动模式对比。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2026-02-05 eCollection Date: 2026-03-01 DOI: 10.1093/jmammal/gyag001
Jade Legros, Liam P McGuire, Anouk Simard, Kyle H Elliott
{"title":"Contrasting spatial and temporal activity patterns of little brown bats (<i>Myotis lucifugus</i>) at maternity roosts and swarming sites.","authors":"Jade Legros, Liam P McGuire, Anouk Simard, Kyle H Elliott","doi":"10.1093/jmammal/gyag001","DOIUrl":"https://doi.org/10.1093/jmammal/gyag001","url":null,"abstract":"<p><p>Life history of many animals is often concentrated around central or focal places such as roosts or breeding sites that impose spatial constraints and shape habitat use. Central place behaviors vary depending on life stages, environmental conditions, and the annual cycle of a species-highlighting the need to consider these variations in management plans. The objective of our study was to contrast central place behaviors of little brown bats (<i>Myotis lucifugus</i>) during summer around a maternity roost, while lactating females raised their pups, and during pre-hibernation swarming (mating) at a cave for both males and females. Given the differences in energetic constraints between seasons and sexes, we hypothesized that return rates, activity, distribution, and habitat use would differ between the maternity roost and the hibernaculum and that male and female behavior would differ. We used an automated telemetry network consisting of 10 receiver towers at each site to track bat movements in the surrounding area. This system recorded over 370,000 detections from 23 lactating females at the maternity roost and over 90,000 detections from 23 males and 15 females at the hibernaculum. The maternity roost acted as a typical central place with females returning to the roost on 81 ± 29% of nights and with activity concentrated in a ∼5 km radius of the roost, primarily along a riparian corridor. At the swarming site, males and females returned on only 22 ± 27% of nights, although when they returned males stayed longer than females. Bats were detected up to 13 km from the swarming site and males were overall detected more frequently than females, suggesting that the spatial extent of use differs between sexes. Our study is one of the first to automatically track bats around both a maternity roost and a hibernaculum, and we offer practical suggestions to improve study designs-particularly to address seasonal shifts and sex-specific behavioral variation. We also highlight the importance of integrating seasonal perspectives to better support -management plans for bats.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"107 2","pages":"334-347"},"PeriodicalIF":1.6,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13035269/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cryptic species and taxonomic revision of kangaroo mice, the rodent genus Microdipodops. 鼠属小二足动物袋鼠鼠的隐种及分类修正。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-12-15 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf070
John C Hafner, Nathan S Upham, Fiona Gowen-Huang, Jessica E Light
{"title":"Cryptic species and taxonomic revision of kangaroo mice, the rodent genus <i>Microdipodops</i>.","authors":"John C Hafner, Nathan S Upham, Fiona Gowen-Huang, Jessica E Light","doi":"10.1093/jmammal/gyaf070","DOIUrl":"https://doi.org/10.1093/jmammal/gyaf070","url":null,"abstract":"<p><p>This study presents the first systematic revision of kangaroo mice, the heteromyid genus <i>Microdipodops</i>, in over 8 decades. The study relies on a suite of genetic (karyology and nuclear and mitochondrial DNA sequencing) and phenetic (cranial morphometrics and pelage colorimetry) characters to examine differentiation within the genus. We also present the first molecular phylogeny of the subfamily Dipodomyinae (includes kangaroo mice and kangaroo rats, <i>Dipodomys</i>) that incorporates all currently recognized species. Building on previous studies (including unpublished materials) and incorporating additional laboratory analyses and fieldwork, we find genetic evidence to recognize 6 species of <i>Microdipodops</i> organized into 2 subgenera as follows: <i>M</i>. <i>Microdipodops</i>, including <i>M</i>. (<i>M</i>.) <i>albiventer</i>, <i>M</i>. (<i>M</i>.) <i>megacephalus</i>, <i>M</i>. (<i>M</i>.) <i>oregonus</i>, and <i>M</i>. (<i>M</i>.) <i>polionotus</i>; and <i>M</i>. <i>Psammophilomys</i>, new subgenus, which includes <i>M</i>. (<i>P</i>.) <i>pallidus</i> and <i>M</i>. (<i>P</i>.) <i>ruficollaris</i>. All 6 species are endemic to the Great Basin Desert of western North America. We are unable to discriminate among these species using discriminate function analyses of cranial and pelage morphometric characters; indeed, the species are morphologically cryptic but genetically distinctive. We find strong molecular phylogenetic support for both a monophyletic <i>Microdipodops</i> and <i>Dipodomys</i>. Molecular divergence-time analyses show that the 2 subgenera of <i>Microdipodops</i> diverged from each other about 4.8 million years ago (Ma) and that the 3 sister-species pairs diverged approximately 1.2, 1.4 and 1.9 Ma, which compares to sister species of <i>Dipodomys</i> that diverged between 0.8 and 3.8 Ma in the same analysis. Expanded fieldwork, specimen collecting, and genetic sampling show range extensions and a reorganized distributional patterning of species of <i>Microdipodops</i> across the Great Basin Desert. Most noteworthy among the distributional changes is our discovery that kangaroo mice of the Owyhee Desert (ecoregion includes southwestern Idaho, southeastern Oregon and north-central Nevada), previously deemed a relictual isolate, all belong to the same species and that this species should bear the name <i>M</i>. (<i>M</i>.) <i>megacephalus</i> given that the type specimen of the genus (from Halleck, in northern Nevada) is genetically most closely related to other kangaroo mice of the Owyhee Desert. The ecological preferences of <i>M</i>. (<i>M</i>.) <i>megacephalus</i> appear to be strikingly dissimilar to those of its congeners. With the descriptions of 4 new species, and revised taxonomic concepts for 2 others, this study has important implications for the conservation and management of kangaroo mice across their distribution.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"106 6","pages":"1342-1371"},"PeriodicalIF":1.6,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12704749/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145769665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phenotype response for the invasive Petaurus notatus in Tasmania. 塔斯马尼亚州侵入性白莲花的表型反应。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-10-27 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf074
Meagan Powley, Katarina Mikac
{"title":"Phenotype response for the invasive <i>Petaurus notatus</i> in Tasmania.","authors":"Meagan Powley, Katarina Mikac","doi":"10.1093/jmammal/gyaf074","DOIUrl":"10.1093/jmammal/gyaf074","url":null,"abstract":"<p><p>A mainland native nocturnal arboreal glider <i>Petaurus notatus</i> (Krefft's Glider) was introduced to Tasmania in the 1830s as a pet and its subsequent escape and landscape spread has been associated with the predation of endemic and migratory birds. Using geometric morphometrics, we assessed whether <i>P. notatus</i> experienced a phenotypic response, visible in their skull, after introduction to Tasmania. We found significant skull form variation between Tasmanian (<i>n </i>= 57) and Victorian (<i>n </i>= 102) glider specimens. Specifically, there is an increase in rostrum length-particularly at the mid-cranium-a dorsal shift of the frontal bones, and increase in posterior angle of the coronoid process on the mandible. Whether this morphological change is associated with a dietary shift towards carnivory or because of multiple ecological pressures is unclear. However, similar morphological variations identified in the Tasmanian specimens have previously been linked to an increase in carnivory in other species as noted by other researchers.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"106 6","pages":"1456-1464"},"PeriodicalIF":1.6,"publicationDate":"2025-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12704938/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145769696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biodiversity conservation depends on the expansion of taxonomy and systematics research. 生物多样性的保护依赖于分类学和系统学研究的扩展。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-10-21 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf067
Luis A Ruedas, Scott L Gardner
{"title":"Biodiversity conservation depends on the expansion of taxonomy and systematics research.","authors":"Luis A Ruedas, Scott L Gardner","doi":"10.1093/jmammal/gyaf067","DOIUrl":"10.1093/jmammal/gyaf067","url":null,"abstract":"<p><p>Despite mammals constituting fewer than 0.3% of all described species, their conservation is compelling for a number of reasons. They contribute to biodiversity and are important in maintaining and regulating ecological communities. Many mammals have significant cultural and economic value, serving as sources of food, medicine, and tourism revenue. Furthermore, the conservation of mammals often leads to the protection of entire habitats, benefiting numerous other species and preserving ecosystem services that are critical for human well--being. Humans share a unique evolutionary history with other mammal species, making their preservation important for scientific research, education, and understanding of our own biology and evolution. In spite of this, mammalian biodiversity is at severe risk, with 26% of all mammal species threatened with extinction. Here, we propose to use a 4-step framework with which to approach conservation strategy for mammalian biodiversity. The framework is structured and based on a protocol initially established from the standpoint of parasites by Daniel R. Brooks and collaborators in 2014. The 4 key phases are <b>documentation</b> (species discovery and specimen collection); <b>assessment</b> (species relationships, genetic diversity, and climate change vulnerability); <b>monitoring</b> (tracking populations and habitats over time); and <b>action</b> (addressing the taxonomic impediment-the lack of human and financial resources to undertake taxonomy, as well as the discrepancy between real number of existing species and human knowledge of biodiversity-and expanding protected areas). The successful integration of politics, politicians, and stakeholders into the process of conservation is critical to the success of the protocol because of the requirement to enact policy. And the urgency is now, because nothing is more vital to the human condition than preservation of biodiversity.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"106 6","pages":"1495-1512"},"PeriodicalIF":1.6,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12846871/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146087939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digging for cold: how temperature and depth determine hibernacula selection for a small mammalian hibernator, the New Mexico Jumping Mouse (Zapus luteus). 挖掘寒冷:温度和深度如何决定小型哺乳动物冬眠的选择,新墨西哥跳鼠(Zapus luteus)。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-10-16 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf066
Jennifer L Zahratka, C Loren Buck, Robert Buscaglia, Carol L Chambers
{"title":"Digging for cold: how temperature and depth determine hibernacula selection for a small mammalian hibernator, the New Mexico Jumping Mouse (<i>Zapus luteus</i>).","authors":"Jennifer L Zahratka, C Loren Buck, Robert Buscaglia, Carol L Chambers","doi":"10.1093/jmammal/gyaf066","DOIUrl":"10.1093/jmammal/gyaf066","url":null,"abstract":"<p><p>Adaptation of mammals to seasonally changing environments is crucial for survival and fitness. Some mammals migrate or alter their behavior when resources are limited, while others hibernate-a strategy that offers profound seasonal metabolic savings. During hibernation, both body temperature and metabolic rate are reduced, minimizing energy expenditures. However, when hibernacula temperatures decrease to below their body temperature setpoint, mammals must increase thermoregulatory output to maintain body temperature. Thus, the thermal characteristics of hibernacula play a crucial role in determining overwinter metabolic expenditure. We identified hibernacula locations of the endangered New Mexico Jumping Mouse (<i>Zapus luteus</i>), described physical characteristics of the hibernacula, and compared soil temperatures between hibernacula and randomly selected sites. Additionally, we explored the relationship between ambient air and soil temperatures at hibernacula to understand their influence on thermal buffering and the stability of microclimatic conditions. In Arizona and Colorado from 2019 to 2021, we tracked New Mexico jumping mice into hibernation to confirm hibernacula locations. We used radiotelemetry and Passive Integrated Transponder tags with <i>a priori</i> criteria to identify underground locations. We confirmed and characterized hibernacula for 4 females and 7 males (<i>n </i>= 11). Soil temperatures at 3 depths (-10, -30, and -50 cm) were measured near each hibernaculum and compared to random sites. Hibernacula depth averaged 29 ± 2 cm (range 21 to 45 cm). Soil temperatures at hibernacula were colder and warmed later in spring compared to random sites. Female hibernacula were colder ( <math> <mrow> <mrow> <mrow> <mover><mrow><mi>x</mi></mrow> <mo>¯</mo></mover> </mrow> </mrow> </mrow> </math> = 2.1 ± 0.03 °C) than those of males ( <math> <mrow> <mrow> <mrow> <mover><mrow><mi>x</mi></mrow> <mo>¯</mo></mover> </mrow> </mrow> </mrow> </math> = 2.5 ± 0.02 °C). Hibernacula were mostly north-facing, possessed vegetation cover, and located on average 59.6 ± 19.6 m from perennial water. The consistent selection of hibernacula with physical traits that maintain colder, more stable temperatures emphasizes the importance of conserving microclimatic conditions critical for the recovery of this species, especially amid environmental change.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"106 6","pages":"1299-1310"},"PeriodicalIF":1.6,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12704941/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145769682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Climate change drives habitat specialization and local extirpation, causing niche reduction in an endemic chipmunk. 气候变化导致栖息地专业化和局部灭绝,导致特有花栗鼠的生态位减少。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-09-25 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf059
Hailey N Jacobson, Jennifer K Frey
{"title":"Climate change drives habitat specialization and local extirpation, causing niche reduction in an endemic chipmunk.","authors":"Hailey N Jacobson, Jennifer K Frey","doi":"10.1093/jmammal/gyaf059","DOIUrl":"10.1093/jmammal/gyaf059","url":null,"abstract":"<p><p>Climate change is a driver of species extirpation, particularly for local endemics. The niche reduction hypothesis provides a conceptual framework to understand how the realized niche of a declining species is reduced from its historical niche to its contemporary niche due to threats. The Organ Mountains Colorado Chipmunk (<i>Neotamias quadrivittatus australis</i>) is an example of an endemic montane mammal for which climate change may be a threat. We used occupancy models developed for historical sites to evaluate the extent of extirpations and their causes. We used occupancy models developed for random sites to evaluate the contemporary distribution and realized niche. Our results suggest that the Organ Mountains Colorado Chipmunk has undergone broadscale extirpation (extirpated from 64% of sites) with a lower elevation range boundary contraction of 262 m in the past 30 yr. Chipmunks were extirpated from hotter and more arid biotic communities and persisted in drainages that provide cooler and more mesic conditions. Chipmunks avoided conifer forest, which were an integral part of their historical niche, suggesting that the Organ Mountains Colorado Chipmunk may have undergone a reduction in its realized niche. The Organ Mountains Colorado Chipmunk has become a de facto \"functional habitat specialist\" restricted to climate change refugia, further increasing its vulnerability to climate change and other threats.</p>","PeriodicalId":50157,"journal":{"name":"Journal of Mammalogy","volume":"106 6","pages":"1324-1341"},"PeriodicalIF":1.6,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12704939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145769638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sleeping giants: temporal, seasonal, and spatial variations in the 24-h activity budget of Hippopotamus amphibius. 沉睡巨人:两栖河马24小时活动预算的时间、季节和空间变化。
IF 1.6 3区 生物学
Journal of Mammalogy Pub Date : 2025-09-19 eCollection Date: 2025-12-01 DOI: 10.1093/jmammal/gyaf068
Victoria L Inman, Keith E A Leggett
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