Dogs were the first domestic animal, but little is known about their population history and to what extent it was linked to humans. We sequenced 27 ancient dog genomes and found that all dogs share a common ancestry distinct from present-day wolves, with limited gene flow from wolves since domestication but substantial dog-to-wolf gene flow. By 11,000 years ago, at least five major ancestry lineages had diversified, demonstrating a deep genetic history of dogs during the Paleolithic. Coanalysis with human genomes reveals aspects of dog population history that mirror humans, including Levant-related ancestry in Africa and early agricultural Europe. Other aspects differ, including the impacts of steppe pastoralist expansions in West and East Eurasia and a near-complete turnover of Neolithic European dog ancestry.
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http://dx.doi.org/10.1126/science.aba9572 | DOI Listing |
Biochem Genet
January 2025
Wildlife Institute of India, Chandrabani, Dehradun, Uttarakhand, 248001, India.
Indian Himalayan Region (IHR) supports a plethora of biodiversity with a unique assemblage of many charismatic and endemic species. We assessed the genetic diversity, demographic history, and habitat suitability of blue sheep (Pseudois nayaur) in the IHR through the analysis of the mitochondrial DNA (mtDNA) control region (CR) and Cytochrome b gene, and 14 ecological predictor variables. We observed high genetic divergence and designated them into two genetic lineage groups, i.
View Article and Find Full Text PDFMil Med
January 2025
Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.
Introduction: Vaccine mandates have been used to minimize the duty days lost and deaths attributable to infectious disease among active duty Service members (ADSMs). In response to the global COVID-19 pandemic, in August 2021, the U.S.
View Article and Find Full Text PDFCan Assoc Radiol J
January 2025
Department of Radiology, Dalhousie University, Halifax, NS, Canada.
Contrast media, including iodinated contrast media and gadolinium-based contrast agents, are commonly administered pharmaceuticals with excellent safety profiles. However, a minority of the population may experience a hypersensitivity reaction following intravenous administration. Hypersensitivity reactions can be immediate or delayed, and range from mild, such as urticaria, to severe, including anaphylaxis.
View Article and Find Full Text PDFInt J Circumpolar Health
December 2025
Pediatric Medicine Children's Hospital of Eastern Ontario, Associate Professor of Pediatrics, University of Ottawa, Ottawa, ON, Canada.
We aimed to characterise the medical and social complexities experienced by Inuit children and their families from Nunavut who were cared for at a general paediatrics clinic at an urban tertiary-level hospital located in Eastern Ontario. A retrospective chart review of this cohort was completed between 2016 and 2019. Two independent reviewers extracted data from charts.
View Article and Find Full Text PDFJ Fish Biol
January 2025
Aquatic Systems Biology Unit, TUM School of Life Sciences, Technical University of Munich, Freising, Germany.
Animal growth is a fundamental component of population dynamics, which is closely tied to mortality, fecundity, and maturation. As a result, estimating growth often serves as the basis of population assessments. In fish, analysing growth typically involves fitting a growth model to age-at-length data derived from counting growth rings in calcified structures.
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