American Journal of Biological Anthropology最新文献

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The cost of being qualified: Current barriers faced by graduate students in forensic anthropology. 合格的代价:法医人类学研究生目前面临的障碍。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-20 DOI: 10.1002/ajpa.25005
Thomas A Delgado, Randi M Depp, Raphaela M Meloro, Katherine M Lane
{"title":"The cost of being qualified: Current barriers faced by graduate students in forensic anthropology.","authors":"Thomas A Delgado, Randi M Depp, Raphaela M Meloro, Katherine M Lane","doi":"10.1002/ajpa.25005","DOIUrl":"https://doi.org/10.1002/ajpa.25005","url":null,"abstract":"<p><p>When considering the best ethical practices in forensic anthropology, one must consider how accessible the field is to new students that are responsible for driving the future of research, pedagogy, and the field as a whole. While there is no denying that there are multiple barriers to accessing academia (e.g., racism, sexism, xenophobia, etc.) the cost of a graduate education is a key factor that affects the diversity of people that are able to enter the field. Here, the cost of 24 universities prominent in the education of forensic anthropologists are considered in tandem with the opportunities for funding offered by these institutions and average costs of living for the respective surrounding areas. Demographic data for the universities at the graduate and undergraduate level was additionally compared with the demographics of the cities surrounding the universities. Funding, excluding loans, was shown to be greatly below cost of living in university cities, and often did not match the costs of attendance estimated by institutions. Including the cost of living, the average graduate degree costs over $60,000 per year while the average stipend for graduate students is below $14,000 necessitating the need for loans or out-of-institute support. White individuals were overrepresented in graduate enrollment when compared with surrounding area demographics, even when university demographics were similar to those of the surrounding area. Overall, findings highlight the inaccessibility of pursuing higher education for minority groups and demonstrate the need for institutions to develop funding programs to promote diversity in higher education.</p>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Morphological and morphometric study of the hominin dental casts from Grotta-Riparo di Uluzzo C (Apulia, southern Italy) 对来自 Grotta-Riparo di Uluzzo C(意大利南部阿普利亚)的人牙铸件进行形态学和形态计量学研究。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-20 DOI: 10.1002/ajpa.24998
Francesca Seghi, Rita Sorrentino, Shara E. Bailey, Erica Piccirilli, Antonino Vazzana, Eugenio Bortolini, Owen A. Higgins, Giulia Marciani, Medica A. Orlando, Enza E. Spinapolice, Adriana Moroni, Stefano Benazzi
{"title":"Morphological and morphometric study of the hominin dental casts from Grotta-Riparo di Uluzzo C (Apulia, southern Italy)","authors":"Francesca Seghi,&nbsp;Rita Sorrentino,&nbsp;Shara E. Bailey,&nbsp;Erica Piccirilli,&nbsp;Antonino Vazzana,&nbsp;Eugenio Bortolini,&nbsp;Owen A. Higgins,&nbsp;Giulia Marciani,&nbsp;Medica A. Orlando,&nbsp;Enza E. Spinapolice,&nbsp;Adriana Moroni,&nbsp;Stefano Benazzi","doi":"10.1002/ajpa.24998","DOIUrl":"10.1002/ajpa.24998","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Grotta-Riparo di Uluzzo C (Apulia, southern Italy) is a pivotal site for investigating the evolution of the Middle Paleolithic and the earliest phases of the Upper Paleolithic in southern Italy, as the extensive stratigraphic record of this site includes a thick Mousterian sequence followed by the Uluzzian. Here, we investigate the taxonomic affinity of seven unpublished deciduous human teeth retrieved from the site of Uluzzo C in 1960.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>The teeth are represented by seven plaster dental casts, which are housed at the Museo Civico di Paleontologia e Paletnologia in Maglie (Lecce, Apulia). The location of the original specimens remains unknown, rendering these casts the only human remains evidence yielded by Uluzzo C to date. Based on occlusal-view photographs and digital models of the casts, we examined the external morphology and morphometry of the teeth, comparing them to <i>Homo sapiens</i> and <i>H. neanderthalensis</i> samples. Through geometric morphometric methods and statistical analyses, we analyzed the crown outline of the deciduous molars.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The teeth show morphological and morphometric features that are variably found in <i>H. neanderthalensis</i>, <i>H. sapiens</i>, or both. Specifically, crown outline analysis shows that all molars fall within <i>H. neanderthalensis</i> variability, except for Uluzzo 853 (lower right deciduous first molar), which falls within <i>H. sapiens</i> variability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>This study provides the first taxonomic assessment of the hominin teeth from Uluzzo C. The results contribute additional insights into the Paleolithic peopling of southern Italy during a crucial period marked by the persistence of post-Tyrrhenian Neanderthal techno-complexes and the arrival of <i>H. sapiens</i>.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24998","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Proposed complementary osteological indicators: Advancing the estimation of puberty stages in Bioarcheology 拟议的补充骨学指标:推进生物发育期的估算。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-12 DOI: 10.1002/ajpa.24996
Alessia Bareggi, Valentina Giuffra, Giulia Riccomi
{"title":"Proposed complementary osteological indicators: Advancing the estimation of puberty stages in Bioarcheology","authors":"Alessia Bareggi,&nbsp;Valentina Giuffra,&nbsp;Giulia Riccomi","doi":"10.1002/ajpa.24996","DOIUrl":"10.1002/ajpa.24996","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>The study of puberty is a well-established area of bioarcheological research, which greatly enhances our understanding of adolescence and growth in the past. Since the publications of Shapland and Lewis' works, which have become “standards” for estimating puberty in skeletal material, no additional osteological indicators of puberty have been proposed. Nevertheless, clinical practice constantly develops skeletal maturation markers that could be useful in bioarcheology. This study aims to assess the applicability and reliability of novel puberty indicators as a complementary tool to estimate puberty in skeletal remains.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Four new maturation markers including spheno-occipital synchondrosis, humeral head ossification, calcaneal apophysis ossification, and mandibular premolar mineralization were selected and applied to a sample of 85 adolescents from pre-Roman southern Italy (Pontecagnano, 7th–4th <span>BCE</span>).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Despite some limits in adapting the original clinical methods to osteoarcheological material, the use of these novel skeletal indicators had moderate to excellent scoring repeatability and an overall high agreement with the puberty and menarche status previously estimated with standard methods. These results encourage us to apply these markers in bioarcheology. In some cases, minor adaptations of the original scoring systems are suggested to enhance reliability.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>Including the proposed indicators in routine puberty data collection allows us to refine puberty estimation and improve the ability to identify key growth milestones in poorly preserved skeletons. Further application to osteological collections with diverse chronology and geographical differences is needed to assess how and to what extent the newly proposed maturation markers perform.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141591596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Cover & Editorial Board 封面与编辑委员会
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-09 DOI: 10.1002/ajpa.24775
{"title":"Cover & Editorial Board","authors":"","doi":"10.1002/ajpa.24775","DOIUrl":"https://doi.org/10.1002/ajpa.24775","url":null,"abstract":"","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24775","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Issue Information – Table of Contents 发行信息 - 目录
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-09 DOI: 10.1002/ajpa.24776
{"title":"Issue Information – Table of Contents","authors":"","doi":"10.1002/ajpa.24776","DOIUrl":"https://doi.org/10.1002/ajpa.24776","url":null,"abstract":"","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24776","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Dental topography of prosimian premolars predicts diet: A comparison in premolar and molar dietary classification accuracies 前臼齿和臼齿膳食分类准确性的比较:前臼齿和臼齿饮食分类准确性的比较。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-05 DOI: 10.1002/ajpa.24995
Dorien de Vries, Julie M. Winchester, Ethan L. Fulwood, Elizabeth M. St. Clair, Doug M. Boyer
{"title":"Dental topography of prosimian premolars predicts diet: A comparison in premolar and molar dietary classification accuracies","authors":"Dorien de Vries,&nbsp;Julie M. Winchester,&nbsp;Ethan L. Fulwood,&nbsp;Elizabeth M. St. Clair,&nbsp;Doug M. Boyer","doi":"10.1002/ajpa.24995","DOIUrl":"10.1002/ajpa.24995","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This study tests whether (1) premolar topography of extant “prosimians” (strepsirrhines and tarsiers) successfully predicts diet and (2) whether the combination of molar and premolar topography yields higher classification accuracy than using either tooth position in isolation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Dental topographic metrics (ariaDNE, relief index, and orientation patch count rotated) were calculated for 118 individual matched-pairs of mandibular fourth premolars (P<sub>4</sub>) and second molars (M<sub>2</sub>). The sample represents 7 families and 22 genera. Tooth variables were analyzed in isolation (P<sub>4</sub> only; M<sub>2</sub> only), together (P<sub>4</sub> and M<sub>2</sub>), and combined (PC1 scores of bivariate principal component analyses of P<sub>4</sub> and M<sub>2</sub> for each metric). Discriminant function analyses were conducted with and without a measure of size (two-dimensional surface area).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>When using topography only, “prosimian” P<sub>4</sub> shape predicts diet with a success rate that is slightly higher than that of M<sub>2</sub> shape. When absolute size is included, premolars and molars perform comparably well. Including both premolar and molar topography (separately or combined) improves classification accuracy for every analysis beyond considering either in isolation. Classification accuracy is highest when premolar and molar topography and size are included.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>Our findings indicate that molar teeth incompletely summarize the functional requirements of oral food breakdown for a given diet, and that the mechanism selecting for premolar form is more varied than what is expressed by molar teeth. Finally, our findings suggest that fossil P<sub>4</sub>s (in isolation or with the M<sub>2</sub>) can be used for meaningful dietary reconstruction of extinct primates.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24995","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
A morphological and molecular approach to investigating infectious disease in early medieval Iberia: The necropolis of La Olmeda (Palencia, Spain) 调查中世纪早期伊比利亚传染病的形态学和分子方法:拉奥尔梅达(西班牙帕伦西亚)墓地。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-04 DOI: 10.1002/ajpa.24994
L. Coppola Bove, C. L. Kirkpatrick, A. Vigil-Escalera Guirado, M. C. Botella López, K. I. Bos
{"title":"A morphological and molecular approach to investigating infectious disease in early medieval Iberia: The necropolis of La Olmeda (Palencia, Spain)","authors":"L. Coppola Bove,&nbsp;C. L. Kirkpatrick,&nbsp;A. Vigil-Escalera Guirado,&nbsp;M. C. Botella López,&nbsp;K. I. Bos","doi":"10.1002/ajpa.24994","DOIUrl":"10.1002/ajpa.24994","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Here we investigate infectious diseases that potentially contribute to osteological lesions in individuals from the early medieval necropolis of La Olmeda (6th-11th c. CE) in North Iberia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and methods</h3>\u0000 \u0000 <p>We studied a minimum number of 268 individuals (33 adult females; 38 adult males, 77 unknown/indeterminate sex; and 120 non-adults), including articulated and commingled remains. Individuals with differential diagnoses suggesting chronic systemic infectious diseases were sampled and bioinformatically screened for ancient pathogen DNA.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Five non-adults (and no adults) presented skeletal evidence of chronic systemic infectious disease (1.87% of the population; 4.67% of non-adults). The preferred diagnoses for these individuals included tuberculosis, brucellosis, and malaria. Ancient DNA fragments assigned to the malaria-causing pathogen, <i>Plasmodium</i> spp., were identified in three of the five individuals. Observed pathology includes lesions generally consistent with malaria; however, additional lesions in two of the individuals may represent hitherto unknown variation in the skeletal manifestation of this disease or co-infection with tuberculosis or brucellosis. Additionally, spondylolysis was observed in one individual with skeletal lesions suggestive of infectious disease.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study sheds light on the pathological landscape in Iberia during a time of great social, demographic, and environmental change. Genetic evidence challenges the hypothesis that malaria was absent from early medieval Iberia and demonstrates the value of combining osteological and archaeogenetic methods. Additionally, all of the preferred infectious diagnoses for the individuals included in this study (malaria, tuberculosis, and brucellosis) could have contributed to the febrile cases described in historical sources from this time.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24994","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141499165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Ethics and applications of isotope analysis in archaeology. 考古学中同位素分析的伦理与应用。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-07-01 DOI: 10.1002/ajpa.24992
Chris Stantis, Benjamin J Schaefer, Maria Ana Correia, Aleksa K Alaica, Damien Huffer, Esther Plomp, Marina Di Giusto, Blessing Chidimuro, Alice K Rose, Ayushi Nayak, Ellen J Kendall
{"title":"Ethics and applications of isotope analysis in archaeology.","authors":"Chris Stantis, Benjamin J Schaefer, Maria Ana Correia, Aleksa K Alaica, Damien Huffer, Esther Plomp, Marina Di Giusto, Blessing Chidimuro, Alice K Rose, Ayushi Nayak, Ellen J Kendall","doi":"10.1002/ajpa.24992","DOIUrl":"https://doi.org/10.1002/ajpa.24992","url":null,"abstract":"<p><p>This synthesis explores specific ethical questions that commonly arise in isotopic analysis. For more than four decades, isotope analysis has been employed in archeological studies to explore past human and animal dietary habits, mobility patterns, and the environment in which a human or animal inhabited during life. These analyses require consideration of ethical issues. While theoretical concepts are discussed, we focus on practical aspects: working with descendant communities and other rights holders, choosing methods, creating and sharing data, and working mindfully within academia. These layers of respect and care should surround our science. This paper is relevant for specialists in isotope analysis as well as those incorporating these methods into larger projects. By covering the whole of the research process, from design to output management, we appeal broadly to archaeology and provide actionable solutions that build on the discussions in the general field.</p>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Brief communication: New method for measuring nitrogen isotopes in tooth dentine at high temporal resolution 简要通讯:高时间分辨率测量牙本质中氮同位素的新方法。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-06-26 DOI: 10.1002/ajpa.24991
Tanya M. Smith, Janaína N. Ávila, Manish Arora, Christine Austin, Teresa Drake, Rebecca Kinaston, Emma Sudron, Yue Wang, Ian S. Williams
{"title":"Brief communication: New method for measuring nitrogen isotopes in tooth dentine at high temporal resolution","authors":"Tanya M. Smith,&nbsp;Janaína N. Ávila,&nbsp;Manish Arora,&nbsp;Christine Austin,&nbsp;Teresa Drake,&nbsp;Rebecca Kinaston,&nbsp;Emma Sudron,&nbsp;Yue Wang,&nbsp;Ian S. Williams","doi":"10.1002/ajpa.24991","DOIUrl":"10.1002/ajpa.24991","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Nitrogen isotopes (δ<sup>15</sup>N) are widely used to study human nursing and weaning ages. Conventional methods involve sampling 1-mm thick sections of tooth dentine—producing an averaging effect that integrates months of formation. We introduce a novel protocol for measuring δ<sup>15</sup>N by multicollector secondary ion mass spectrometry (SIMS).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>We sampled dentine δ<sup>15</sup>N on a weekly to monthly basis along the developmental axis in two first molars of healthy children from Australia and New Zealand (<i>n</i> = 217 measurements). Nitrogen isotope ratios were determined from measurements of CN<sup>−</sup> secondary molecular ions in ~35 μm spots. By relating spot position to enamel formation, we identified prenatal dentine, as well as sampling ages over more than 3 years. We also created calcium-normalized barium and strontium maps with laser ablation-inductively coupled plasma-mass spectrometry.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We found rapid postnatal δ<sup>15</sup>N increases of ~2‰–3‰, during which time the children were exclusively breastfed, followed by declines as the breastfeeding frequency decreased. After weaning, δ<sup>15</sup>N values remained stable for several months, coinciding with diets that did not include meat or cow's milk; values then varied by ~2‰ starting in the third year of life. Barium did not show an immediate postnatal increase, rising after a few months until ~1–1.5 years of age, and falling until or shortly after the cessation of suckling. Initial strontium trends varied but both individuals peaked months after weaning.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>Developmentally informed SIMS measurements of δ<sup>15</sup>N minimize time averaging and can be precisely related to an individual's early dietary history.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajpa.24991","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141459688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Shaft structure of the first metatarsal contains a strong phylogenetic signal in apes and humans 在猿类和人类中,第一跖骨的轴结构含有强烈的系统发育信号。
IF 1.7 2区 生物学
American Journal of Biological Anthropology Pub Date : 2024-06-23 DOI: 10.1002/ajpa.24987
Yuma Tomizawa, Masato Nakatsukasa, Marcia S. Ponce de León, Christoph P. E. Zollikofer, Naoki Morimoto
{"title":"Shaft structure of the first metatarsal contains a strong phylogenetic signal in apes and humans","authors":"Yuma Tomizawa,&nbsp;Masato Nakatsukasa,&nbsp;Marcia S. Ponce de León,&nbsp;Christoph P. E. Zollikofer,&nbsp;Naoki Morimoto","doi":"10.1002/ajpa.24987","DOIUrl":"10.1002/ajpa.24987","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Metatarsal bones constitute a key functional unit of the foot in primates. While the form-function relationships of metatarsals have been extensively studied, particularly in relation to the loss of the grasping ability of the foot in humans in contrast to apes, the effect of phyletic history on the metatarsal morphology and its variability remains largely unknown.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Here, we evaluate how the strength of the phylogenetic signal varies from the first to the fifth metatarsal in humans, chimpanzees, gorillas, orangutans, gibbons, and Japanese macaques. We use computed tomography imaging and morphometric mapping to quantify the second moment of area around and along the metatarsal shaft and evaluate the strength of the phylogenetic signal with multivariate <i>K</i>-statistics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The shaft structure of the first metatarsal, but not the others, correlates well with the phylogeny of apes and humans.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Discussion</h3>\u0000 \u0000 <p>Given the importance of the first metatarsal for grasping and bipedal/quadrupedal locomotion, the strong phylogenetic but weak functional signal in its structure is unexpected. These findings suggest that the evolutionary diversification of hominoid locomotor behaviors, including human bipedality, is only partly reflected in form-function relationships of key skeletal elements, and that phylogenetic history acted as a major evolutionary constraint.</p>\u0000 </section>\u0000 </div>","PeriodicalId":29759,"journal":{"name":"American Journal of Biological Anthropology","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141459689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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