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Global Data Compilation Across Climate Gradients Supports the Use of Common Allometric Equations for Three Transatlantic Mangrove Species.
Ecol Evol
November 2024
USDA Forest Service, Southern Research Station Forest Inventory and Analysis Knoxville Tennessee USA.
Predicting the distribution, structure, and biomass of mangrove forests is an area of high research interest. Across the Atlantic East Pacific biogeographic region, three species are common and abundant members of local mangrove communities; , , and . Biomass prediction for these species has relied on two approaches: site-specific allometries based on the idea that environmental/climatic differences between sites drive growth differences, or the use of common allometric equations based on the idea that site driven differences are minimal.
View Article and Find Full Text PDFEmergence of highly pathogenic avian influenza viruses H5N1 and H5N5 in white-tailed eagles, 2021-2023.
J Gen Virol
November 2024
Norwegian Veterinary Institute, P.O. Box 64, NO-1432 Ås, Norway.
Article Synopsis
- * Post-mortem examinations of WTEs showed no major visible issues, but microscopic analyses revealed organ damage and virus presence, indicating a widespread infection.
- * Phylogenetic studies indicate the HPAIV H5N1 genotype was likely introduced to Norway by migratory birds and was linked to outbreaks in seabirds, suggesting WTEs may act as indicators for these viruses, though not all strains seem to affect them similarly.
Multiple transatlantic incursions of highly pathogenic avian influenza clade 2.3.4.4b A(H5N5) virus into North America and spillover to mammals.
Cell Rep
July 2024
National Centre for Foreign Animal Disease, Winnipeg, MB R3E 3M4, Canada; Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada. Electronic address:
Highly pathogenic avian influenza (HPAI) viruses have spread at an unprecedented scale, leading to mass mortalities in birds and mammals. In 2023, a transatlantic incursion of HPAI A(H5N5) viruses into North America was detected, followed shortly thereafter by a mammalian detection. As these A(H5N5) viruses were similar to contemporary viruses described in Eurasia, the transatlantic spread of A(H5N5) viruses was most likely facilitated by pelagic seabirds.
View Article and Find Full Text PDFAncient Plasmodium genomes shed light on the history of human malaria.
Nature
July 2024
Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
Malaria-causing protozoa of the genus Plasmodium have exerted one of the strongest selective pressures on the human genome, and resistance alleles provide biomolecular footprints that outline the historical reach of these species. Nevertheless, debate persists over when and how malaria parasites emerged as human pathogens and spread around the globe. To address these questions, we generated high-coverage ancient mitochondrial and nuclear genome-wide data from P.
View Article and Find Full Text PDFRedefining the treponemal history through pre-Columbian genomes from Brazil.
Nature
March 2024
Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland.
Article Synopsis
- The origins of treponemal diseases, like syphilis, have been difficult to trace, especially regarding their emergence in 15th century Europe, potentially linked to Columbus' voyages to the Americas.
- Recent analysis of ancient DNA reveals that treponemal infections existed in early modern Europe and colonial Mexico, but there's been a lack of dated evidence from before the trans-Atlantic contact.
- This study presents treponemal genomes from 2,000-year-old remains in Brazil, suggesting that modern subspecies diverged earlier than previously thought, and highlights the adaptability of these pathogens, opening new avenues for understanding their evolution and spread.
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