| new findings from an old pathogen: intraerythrocytic bacteria (family anaplasmatacea) in red-backed salamanders plethodon cinereus. | during a recent study of red-backed salamanders (plethodon cinereus), we discovered an intraerythrocytic organism typified by violet-staining, intracellular inclusions, consistent with descriptions of cytamoeba or aegyptianella (bacteria). here we characterize its taxonomic status using molecular techniques and ask basic questions about its nature. blood smears from 102 salamanders were examined from pennsylvania, new york, and virginia to determine prevalence, and whole blood from several infec ... | 2009 | 19908097 |
| avian, salamander, and forest floor mercury concentrations increase with elevation in a terrestrial ecosystem. | high-elevation ecosystems of the northeastern united states are vulnerable to deposition and environmental accumulation of atmospheric pollutants, yet little work has been done to assess mercury (hg) concentrations in organisms occupying montane ecosystems. the authors present data on hg concentrations in ground-foraging insectivorous songbirds, a terrestrial salamander, and forest floor horizons sampled along a forested elevational gradient from 185 m to 1273 m in the catskill mountains, new yo ... | 2014 | 24302165 |
| parapatric divergence of sympatric morphs in a salamander: incipient speciation on long island? | speciation is often categorized based on geographic modes (allopatric, parapatric or sympatric). although it is widely accepted that species can arise in allopatry and then later become sympatrically or parapatrically distributed, patterns in the opposite direction are also theoretically possible (e.g. sympatric lineages or ecotypes becoming parapatric), but such patterns have not been shown at a macrogeographic scale. here, we analyse genetic, climatic, ecological and morphological data and sho ... | 2013 | 23909857 |