American Journal of Primatology最新文献

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The Vocal Repertoire of Gray-Cheeked Mangabeys (Lophocebus albigena) in the Bugoma Forest Reserve, Uganda 乌干达布戈马森林保护区灰颊白眉猴(Lophocebus albigena)的声乐曲目
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-09-02 DOI: 10.1002/ajp.70204
Alexia Spelat, Arua Yolam, Thibaud Gruber, Catherine Hobaiter, Gal Badihi
{"title":"The Vocal Repertoire of Gray-Cheeked Mangabeys (Lophocebus albigena) in the Bugoma Forest Reserve, Uganda","authors":"Alexia Spelat,&nbsp;Arua Yolam,&nbsp;Thibaud Gruber,&nbsp;Catherine Hobaiter,&nbsp;Gal Badihi","doi":"10.1002/ajp.70204","DOIUrl":"https://doi.org/10.1002/ajp.70204","url":null,"abstract":"<p>Vocal communication is central for regulating social interactions among primates, particularly in dense forest environments with limited visibility. The acoustic structure of vocalizations is often shaped by a species' socio-ecology. However, numerous species remain poorly documented, including the gray-cheeked mangabey (<i>Lophocebus albigena</i>), an arboreal primate endemic to the forests of Central and East Africa. We combined acoustic measurements with behavioral observations to provide a first quantitative and contextual description of the gray-cheeked mangabey vocal repertoire in the Bugoma Central Forest Reserve (Uganda). Using a discriminant function analysis, we report four acoustically distinct call types: chuckles, grunts, screams, and whoop-gobbles, which were also observed in different social contexts, suggesting a discrete, yet small, vocal repertoire. The two most frequently observed call types were chuckles and grunts. Chuckles were mainly produced during resting phases, and in vocal exchanges between distant individuals, suggesting they function to maintain group contact at medium or longer ranges. Grunts, in contrast, were associated with feeding and grooming, and often produced in short-distance choruses, supporting the hypothesis that they facilitate group cohesion on a smaller spatial scale. The two other call types were more rarely observed: screams were associated with agonistic interactions, while whoop-gobbles were produced more spontaneously, with no clear behavioral correlate that we could record, but may serve functions related to long-distance communication. These findings provide new insights into a little-studied species and pave the way for phylogenetic and functional comparisons with other cercopithecid primates. Nonetheless, many questions remain open and would benefit from further investigation.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.70204","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148862372","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
Parasite–Host Associations in Pinworms (Trypanoxyuris spp.) From Spider Monkeys (Ateles spp.) 蜘蛛猴Pinworms (Trypanoxyuris spp.)的寄主-寄主关系。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-27 DOI: 10.1002/ajp.70203
Brenda Solórzano-García, Andrés Link Ospina, Anthony Di Fiore, Felipe Alfonso-Cortes, Nathalia Fuentes, Gerardo Pérez-Ponce de León
{"title":"Parasite–Host Associations in Pinworms (Trypanoxyuris spp.) From Spider Monkeys (Ateles spp.)","authors":"Brenda Solórzano-García,&nbsp;Andrés Link Ospina,&nbsp;Anthony Di Fiore,&nbsp;Felipe Alfonso-Cortes,&nbsp;Nathalia Fuentes,&nbsp;Gerardo Pérez-Ponce de León","doi":"10.1002/ajp.70203","DOIUrl":"10.1002/ajp.70203","url":null,"abstract":"<p>Pinworms of primates are highly host-specific parasites that, in several lineages, are known to share their evolutionary history with that of their hosts. However, for many primate clades, pinworm diversity has been incompletely assessed, leaving some groups of hosts entirely unexplored and large geographic gaps in our knowledge of primate–pinworm associations. In this study, morphological and molecular data (28S rDNA and COI mtDNA) were integrated to assess pinworm diversity across five spider monkey taxa (<i>Ateles</i> spp.) from Mexico to Ecuador. Only two species of pinworms were found parasitizing <i>Ateles</i> hosts, with morphological traits consistent with <i>Trypanoxyuris atelis</i> and <i>Trypanoxyuris atelophora</i>. Phylogenetic analyses of 28S sequences corroborated species identities, suggesting minimal intraspecific divergence. In contrast, analysis of COI sequences revealed the existence of distinct lineages that paralleled host taxonomic identity for both pinworm species. Divergence levels remained below thresholds typical of species-level differentiation within the genus <i>Trypanoxyuris</i>, suggesting incomplete speciation following host diversification. These results echo those found in previous studies in other primate taxa and highlight the potential of pinworms as valuable indicators of host evolutionary and biogeographic histories. Our results reveal complex, species-specific evolutionary trajectories in <i>Trypanoxyuris</i> infecting spider monkeys and underscore the importance of comprehensive sampling for investigating parasite–host coevolution in platyrrhines.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.70203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823531","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
Microbial Variability in Zoo-Housed Alaotran Gentle Lemurs: Host-Associated Factors and Environmental Influences 动物园饲养的Alaotran温和狐猴的微生物变异:宿主相关因素和环境影响。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-26 DOI: 10.1002/ajp.70202
Sara Fontani, Agnese Gori, Benedetta Cerasuolo, Aldo D'Alessandro, Sonia Renzi, Gale Glendewar, Rachel Cowen, Duccio Cavalieri, Stefano Vaglio
{"title":"Microbial Variability in Zoo-Housed Alaotran Gentle Lemurs: Host-Associated Factors and Environmental Influences","authors":"Sara Fontani,&nbsp;Agnese Gori,&nbsp;Benedetta Cerasuolo,&nbsp;Aldo D'Alessandro,&nbsp;Sonia Renzi,&nbsp;Gale Glendewar,&nbsp;Rachel Cowen,&nbsp;Duccio Cavalieri,&nbsp;Stefano Vaglio","doi":"10.1002/ajp.70202","DOIUrl":"10.1002/ajp.70202","url":null,"abstract":"<p>Primates worldwide face escalating ecological pressures, driving many species to rapid declines. Modern zoos play an essential role by maintaining viable populations and improving welfare through research-driven management. However, gut–microbiome interactions in captive primates remain poorly understood. Our study investigated how host-specific traits influence fecal microbiota composition, whether shared environments facilitate shared microbial signatures, and whether fluctuations in fecal cortisol and testosterone correspond to microbial changes. We also evaluated the combined use of hormonal and microbiota analyses as a noninvasive tool to support welfare and health monitoring in zoo-housed <i>Hapalemur alaotrensis</i>. We monitored 4 groups (<i>n</i> = 8) housed across 4 European facilities, yielding 180 fecal samples across 3 collection phases. We characterized microbial communities through 16S rRNA gene sequencing following DNA extraction and quality checks, and quantified hormone metabolites using ELISA kits. We performed statistical analyses to evaluate the effects of facility, collection phase, and host-specific traits on microbiota composition and hormone concentrations. Microbiota profiling revealed diverse bacterial communities, with facility-associated differences representing the strongest and most consistent pattern, while effects of sex and scent enrichment were weak and inconsistent. Hormone concentrations did not vary across collection phases, although cortisol differed among facilities. No significant associations between hormone concentrations and microbiota profiles were detected. Given the small sample size, these findings should be considered exploratory, providing initial evidence of facility-associated microbiome variation in zoo-housed <i>H. alaotrensis</i>. Larger studies are needed to investigate its potential drivers and evaluate whether combined microbiome and endocrine assessments may contribute to primate welfare monitoring.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13512788/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823483","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
Food Availability and Environmental Factors Are Associated With Seasonal Variation in Diet Composition and Activity Budgets of Stump-Tailed Macaques (Macaca arctoides) in Hollongapar Gibbon Sanctuary, Assam, India 印度阿萨姆邦Hollongapar长臂猿保护区短尾猕猴(Macaca arctoides)食物供应和环境因素与饮食组成和活动预算的季节变化有关
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-11 DOI: 10.1002/ajp.70200
Kunal Chanda, Sourav Chetia, Kuladip Sarma, Sujata Medhi, Mridul Kumar Borthakur
{"title":"Food Availability and Environmental Factors Are Associated With Seasonal Variation in Diet Composition and Activity Budgets of Stump-Tailed Macaques (Macaca arctoides) in Hollongapar Gibbon Sanctuary, Assam, India","authors":"Kunal Chanda,&nbsp;Sourav Chetia,&nbsp;Kuladip Sarma,&nbsp;Sujata Medhi,&nbsp;Mridul Kumar Borthakur","doi":"10.1002/ajp.70200","DOIUrl":"10.1002/ajp.70200","url":null,"abstract":"<div>\u0000 \u0000 <p>Seasonal variation in food availability and environmental factors can strongly influence the activity budgets and dietary composition of primates. However, year-long assessments remain limited for stump-tailed macaques (STMs). Using instantaneous scan sampling, we analyzed 4,836 scans collected over 405 observation hours across 115 days from a troop of 52 wild STMs between December 2022 and November 2023, spanning both dry and wet seasons. We used model-averaged beta and gamma regression models with harmonic seasonal terms to examine how food availability, environmental factors and seasonality influenced activity budgets, dietary composition and food species diversity of STMs. The activity budget comprised feeding (34%), resting (24.2%), moving (23.5%), grooming (13.9%) and other behaviors (4.5%). Moving was more frequent during the wet season (28.3%) and exhibited moderate seasonality, whereas resting was more frequent during the dry season (26.9%) and exhibited weaker seasonality. Across 32 food sources representing eight dietary categories, fruits constituted the largest proportion of the annual diet (34.8%), followed by roots (20.7%), tender bamboo shoots (16.1%) and leaves (15%). Fruits dominated the wet-season diet (61.7%), whereas roots and tender bamboo shoots constituted 67.8% of the dry-season diet. Fruit, seed and invertebrate consumption exhibited strong seasonality, while food species diversity increased with leaf availability. Despite seasonal variation in dietary composition, the proportion of feeding records remained relatively stable throughout the year. Overall, seasonality structured the activity budgets and dietary composition of STMs in response to changing resource conditions.</p></div>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148711001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effects of Provisioning on the Activity Budgets of Tibetan Macaques (Macaca thibetana) 供给对藏猕猴活动预算的影响。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-11 DOI: 10.1002/ajp.70199
Chong-Yang Wang, Yu-Lu Fei, Jie Fang, Jin-Hua Li, Wen-Bo Li
{"title":"Effects of Provisioning on the Activity Budgets of Tibetan Macaques (Macaca thibetana)","authors":"Chong-Yang Wang,&nbsp;Yu-Lu Fei,&nbsp;Jie Fang,&nbsp;Jin-Hua Li,&nbsp;Wen-Bo Li","doi":"10.1002/ajp.70199","DOIUrl":"10.1002/ajp.70199","url":null,"abstract":"<div>\u0000 \u0000 <p>Activity budgets are essential for understanding the variability of behavior and adaptability of primate behavior, as these animals typically adjust their behaviors as their primary response to environmental changes. For instance, provisioning has been associated with altered the time budgets of wild primates. In this study, we conducted field observations on two wild Tibetan macaque (<i>Macaca thibetana</i>) groups the naturally foraging Tianhu II group and the provisioned Yulinkeng I group to investigate activity time allocation patterns in relation to food provisioning. Using 10-min instantaneous scan sampling, we recorded five categories of behavior: resting, traveling, feeding, grooming, and others. The results indicated that the Yulinkeng I group devoted substantially more time to resting (38.97% vs. 23.62%) and grooming (29.76% vs. 7.87%) but considerably less time traveling (17.09% vs. 33.25%) and feeding (5.95% vs. 30.68%) compared to the Tianhu II group. Furthermore, behavioral analyses revealed significant variation across sex and age classes in all five recorded behaviors. Males exhibited a greater tendency to rest, whereas females allocated more time to grooming. Among age classes, juveniles and infants engaged more frequently in other behaviors, particularly play. These findings reveal activity budget patterns associated with provisioning, though they may also reflect unmeasured ecological and demographic differences between the two groups. Regulating provisioning practices is therefore recommended as a precautionary measure to better support their species-typical behaviors.</p></div>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148711010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Correction to “Global Data From Great Ape Zoo Populations Confirm a High Prevalence of Overweight Individuals” 更正“来自类人猿动物园种群的全球数据证实超重个体的高患病率”
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-03 DOI: 10.1002/ajp.70198
{"title":"Correction to “Global Data From Great Ape Zoo Populations Confirm a High Prevalence of Overweight Individuals”","authors":"","doi":"10.1002/ajp.70198","DOIUrl":"https://doi.org/10.1002/ajp.70198","url":null,"abstract":"<p>https://doi.org/10.1002/ajp.70185</p><p>In the discussion of this article, on page 17, first column, first paragraph, the authors mentioned the suspicion that a specific individual animal had been part of the un-curated dataset they received from Species360, and showed this data in the supplementary material. This data display represents a breach of the condition that no connection between Species360 data and a specific animal must be made. Hence, this connection has been removed from the supplementary material.</p><p>Additionally, the authors misunderstood how curated, anonymized data supporting the results could be shared. The data availability statement therefore must be corrected: Requests for the raw data of this study should be directed at Species360 through Research Request applications (quoting #84212) at https://conservation.species360.org/data-sharing/ (contact support@species360. org for more information). The curated dataset has been removed from the supplementary materials of the article.</p><p>The authors apologize for these errors.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.70198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662094","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
Correction to “Global Data From Great Ape Zoo Populations Confirm a High Prevalence of Overweight Individuals” 更正“来自类人猿动物园种群的全球数据证实超重个体的高患病率”
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-08-03 DOI: 10.1002/ajp.70198
{"title":"Correction to “Global Data From Great Ape Zoo Populations Confirm a High Prevalence of Overweight Individuals”","authors":"","doi":"10.1002/ajp.70198","DOIUrl":"https://doi.org/10.1002/ajp.70198","url":null,"abstract":"<p>https://doi.org/10.1002/ajp.70185</p><p>In the discussion of this article, on page 17, first column, first paragraph, the authors mentioned the suspicion that a specific individual animal had been part of the un-curated dataset they received from Species360, and showed this data in the supplementary material. This data display represents a breach of the condition that no connection between Species360 data and a specific animal must be made. Hence, this connection has been removed from the supplementary material.</p><p>Additionally, the authors misunderstood how curated, anonymized data supporting the results could be shared. The data availability statement therefore must be corrected: Requests for the raw data of this study should be directed at Species360 through Research Request applications (quoting #84212) at https://conservation.species360.org/data-sharing/ (contact support@species360. org for more information). The curated dataset has been removed from the supplementary materials of the article.</p><p>The authors apologize for these errors.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 8","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.70198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662451","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
CapuchinAI 1.0: Development of a Machine Learning-Based Touchscreen Paradigm to Test Cognition in Wild Capuchins CapuchinAI 1.0:基于机器学习的触摸屏范例的开发,以测试野生卷尾猴的认知。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-07-28 DOI: 10.1002/ajp.70194
Federico Sánchez Vargas, Sai Rakshith Potluri, Jacob Abernethy, Marcela E. Benítez
{"title":"CapuchinAI 1.0: Development of a Machine Learning-Based Touchscreen Paradigm to Test Cognition in Wild Capuchins","authors":"Federico Sánchez Vargas,&nbsp;Sai Rakshith Potluri,&nbsp;Jacob Abernethy,&nbsp;Marcela E. Benítez","doi":"10.1002/ajp.70194","DOIUrl":"10.1002/ajp.70194","url":null,"abstract":"<div>\u0000 \u0000 <p>Advancing the study of primate cognition requires methods that preserve ecological validity while enabling the experimental control typical of laboratory research. We introduce <b>CapuchinAI v1.0.</b>, a field-deployable touchscreen system currently integrating real-time species recognition with automated cognitive testing, providing a novel methodology for studying cognition in wild primates. Our approach combines an adapted version of a high-performing YOLOv7-based facial recognition model (<i>MultipleCapuchins</i>) with a portable Raspberry Pi touchscreen–reward apparatus designed for automated operation in natural habitats. The system detects approaching capuchins, initiates video recording, presents stimuli (in our initial deployment, a blue screen that rewards all touches), and dispenses food rewards. During a 2-week presentation to two habituated groups of wild white-faced capuchins (<i>Cebus imitator</i>) at the Taboga Forest Reserve, <b>16 individuals</b> voluntarily interacted with the apparatus, <b>10 triggered rewards</b>, and <b>8 formed and retained robust screen–reward associations</b>. The rapid habituation and learning rates demonstrate the feasibility of deploying AI-mediated cognitive experiments in the wild. Ongoing development of CapuchinAI aims to address several long-standing challenges in field cognition research, with the goal of enabling: (1) autonomous, individualized task administration without researcher intervention; (2) standardized, repeatable trials across individuals and sessions; (3) scalable deployment across groups and sites; and (4) parallel data collection on behavior, identity, and performance. This methodology provides a blueprint for integrating machine learning and touchscreen testing to study within- and between-individual cognitive variation under natural conditions. CapuchinAI represents a significant step toward long-term comparative research on primate cognition, bridging the gap between lab and field.</p></div>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148597700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Correction to “Population Demographic History of Taihangshan Macaques (Macaca mulatta tcheliensis) in the Wulongkou Area, Jiyuan, China” 对“济源市武龙口地区太行山猕猴(Macaca mulatta tcheliensis)的人口统计历史”的修正。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-07-27 DOI: 10.1002/ajp.70195
{"title":"Correction to “Population Demographic History of Taihangshan Macaques (Macaca mulatta tcheliensis) in the Wulongkou Area, Jiyuan, China”","authors":"","doi":"10.1002/ajp.70195","DOIUrl":"10.1002/ajp.70195","url":null,"abstract":"<p>Hu, L., Y. Wang, H. Xu, J. Tian, and J. Lu. 2026. “Population Demographic History of Taihangshan Macaques (<i>Macaca mulatta tcheliensis</i>) in the Wulongkou Area, Jiyuan, China.” <i>American Journal of Primatology</i> 88: e70191. https://doi.org/10.1002/ajp.70191.</p><p>The originally published version of Figure 1 is missing the red dot denoting where the adult male DX was once active. The corrected Figure 1 appears below.</p><p></p><p>[Map of the Jiyuan Wulongkou area within the Taihangshan Macaque National Nature Reserve, Henan Province, China. (A) Location of Henan Taihangshan Macaque National Nature Reserve, China; (B) the current natural distribution range of Taihangshan macaques; (C) area in red shows the key Wulongkou area for tourism and the major range for each Taihangshan macaque group, red dot shows where the adult male DX that was once active in the Wulongkou area was observed].</p><p>We apologize for this error.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13403092/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148590252","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
Altricial Patterns in Prenatal Skeletal Development of Two Large Neotropical Primates: The Poeppig's Woolly Monkey and the Juruá Red Howler Monkey 两种大型新热带灵长类动物的产前骨骼发育的延迟模式:波皮猴的毛猴和juru<s:1>红吼猴。
IF 1.7 3区 生物学
American Journal of Primatology Pub Date : 2026-07-20 DOI: 10.1002/ajp.70193
Eloísa de Jesus Santos Rodrigues, Pedro Mayor, Sandy Estefany Rodrigues de Matos, Thyago Habner de Souza Pereira, Gessiane Pereira da Silva, Joao Valsecchi, Hani R. El Bizri, Richard Bodmer, Frederico Ozanan Barros Monteiro
{"title":"Altricial Patterns in Prenatal Skeletal Development of Two Large Neotropical Primates: The Poeppig's Woolly Monkey and the Juruá Red Howler Monkey","authors":"Eloísa de Jesus Santos Rodrigues,&nbsp;Pedro Mayor,&nbsp;Sandy Estefany Rodrigues de Matos,&nbsp;Thyago Habner de Souza Pereira,&nbsp;Gessiane Pereira da Silva,&nbsp;Joao Valsecchi,&nbsp;Hani R. El Bizri,&nbsp;Richard Bodmer,&nbsp;Frederico Ozanan Barros Monteiro","doi":"10.1002/ajp.70193","DOIUrl":"10.1002/ajp.70193","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding prenatal skeletal development is essential for pregnancy monitoring and veterinary care, as well as for understanding reproductive strategies, evolutionary differences, and ecological adaptations. This study provides an ultrasonographic description of prenatal bone development in two large neotropical primates, the Poeppig's woolly monkey (<i>Lagothrix lagothricha poeppigii</i>, <i>n</i> = 24) and the Juruá howler monkey (<i>Alouatta juara</i>, <i>n</i> = 7). Bone mineralization timing and skeletal biometric data were evaluated in relation to total dorsal length (TDL), which averaged 15.7 ± 5.3 cm in the woolly monkey and 13.9 ± 7.0 cm in the howler monkey. Gestational age correlated strongly with TDL (<i>r</i><sup>2</sup> = 0.99; <i>p</i> &lt; 0.01), CRL (<i>r</i><sup>2</sup> ≥ 0.92; <i>p</i> &lt; 0.01), and body mass (<i>r</i><sup>2</sup> ≥ 0.95; <i>p</i> &lt; 0.01). The highest correlation coefficients between TDL and mineralization were observed with head circumference, scapula and humerus width, and long bone diaphysis, which are suitable indicators of gestational age. The relatively early mineralization of the appendicular skeleton, combined with the absence of secondary ossification centers in both species, suggests skeletal development typical of altricial species, with low neonatal resistance to muscular traction but the ability to cling to mothers, ensuring survival associated with prolonged maternal dependence. Allometric growth was observed during gestation, resulting in hindlimbs slightly longer than forelimbs, common in the locomotor category “arboreal quadruped,” with suspensory movements relying on forelimb strength and mobility. This study provides a morphological basis for fetal development, supporting a better understanding of neonatal survival in non-human primates.</p></div>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"88 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148519636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
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