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Reports of true morels (Morchella) fruiting on conifer burn sites are common in western North America where five different fire-adapted species of black morels (Elata Clade) have been documented based on multilocus phylogenetic analyses. Fruiting of post-fire morels in eastern North America, by comparison, are rare and limited to a report from Minnesota in 1977 and eastern Ontario in 1991. Here, nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) sequences were used to identify the post-fire morel t...
Establish current practice and attitudes towards recovery in a group of Division-1 Collegiate athletes from North America.
Sixteen hepatopancreatobiliary fellowship programs in North America are accredited by the Fellowship Council. This study aims to assess fellows' perceptions of their training program.
Collections of a species referred to Sarcosomataceae (Pezizomycetes) from eastern North America were studied both morphologically and using nuc rDNA internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2 = ITS) and approximately 800 bp from the 5' region of the nuc 28S rDNA (28S) to construct a phylogeny. The analyses indicate that these collections are Donadinia seaveri, a species previously known only from Bermuda. Because the associated tree, Juniperus bermudiana, has declined as a result of insect att...
Sclerodermus Latreille, 1809 (Hymenoptera: Bethylidae), are parasitoids of wood-boring beetle larvae that can co-infest furniture and homes attacked by such larvae. This can result in the human inhabitants receiving stings from adult female wasps as they wander in search of new hosts. Herein, I report the first infestation of Sclerodermus macrogaster (Ashmead, 1887) of a home in North America and provide a review of Sclerodermus biology and clinical signs relevant to their pestiferous nature.
Concentrations of bisphenol A (BPA) in North American and European fresh and marine surface waters and sediments were analyzed to quantify environmental levels and evaluate trends over the years 1996-2014. In North American surface water and sediment, 68% of 1030 weighted observations were below a detection limit (varied widely between studies). In Europe, 33% of 5057 weighted observations were below a detection limit. In North America and Europe, 50th percentile concentrations were 0.005 μg L-1 and 0.0...
Despite constituting half the population, women represent a minority of active physicians and hold a small proportion of faculty leadership positions in North America. However, dermatology is one of the few specialties where women comprise a substantial portion of the workforce. This study explores extent and contributors to gender disparity in academic dermatology faculty positions, leadership, and research.
Plant species disjunctions have attracted the interest of ecologists for decades. We investigated Trichloris crinita, a native C4 perennial grass with disjunct distribution between subtropical regions of North and South America, testing the hypothesis that the species has a similar realized climatic niche in both subcontinents. The climatic niche of T. crinita in North and South America was characterized and compared using presence records and five uncorrelated bioclimatic variables selected according to th...
Opioid overdose deaths in North America have been rising largely as a result of fentanyl adulteration in the illegal drug supply. Drug checking is an established harm reduction intervention in some European settings but has not been broadly implemented or evaluated in North America. We are evaluating a pilot program offering drug checking for people who use street drugs in Vancouver, British Columbia.
The Inocybe geophylla group is circumscribed based on phylogenetic analysis of DNA sequences largely sampled from North America and Europe. Twenty-nine phylogenetic species are uncovered after analysis of combined nuc 28S rDNA (28S) and RNA polymerase II second largest subunit (rpb2) DNA sequence data. Species in the I. geophylla group share the presence of a cortina, silky-fibrillose pileus and stipe, pruinose stipe apex, spermatic odor, thick-walled hymenial cystidia, and smooth amygdaliform or elliptical...
Zoonotic helminths are frequent human parasites that generally complete their natural life cycle in the absence of humans. This review encompasses 30 common or clinically relevant zoonotic helminth infections that are endemic to North America. For each organism or disease, the following information is briefly reviewed: taxonomy, biology, and life cycle, epidemiology, route of transmission for the human host, clinical manifestations, pathologic features, treatment, and laboratory diagnosis. Illustrations are...
The objective of our study was to outline the gender distribution in leadership positions in the North American radiology societies.