| herpetofaunal community change in multiple habitats after fifteen years in a southwest florida preserve, usa. | herpetofaunal declines have been documented globally, and southern florida, usa, is an especially vulnerable region because of high impacts from hydrological perturbations and nonindigenous species. to assess the extent of recent change in herpetofauna community composition, we established a baseline inventory during 1995-97 at a managed preserve in a habitat rich area of southwest florida, and repeated our sampling methods fifteen years later (2010-11). nine drift fence arrays were placed in fo ... | 2015 | 26016475 |
| the thermal plasticity of locomotor performance has diverged between northern and southern populations of the eastern newt (notophthalmus viridescens). | many temperate ectotherms undergo thermal acclimation to remain functional over a wide range of body temperatures, but few studies have investigated whether populations of a single species have evolved differences in the thermal plasticity of locomotor performance. therefore, we asked whether the thermal plasticity of locomotor performance has diverged between northern and southern populations of eastern newts (notophthalmus viridescens). we acclimated eastern newts from florida and maine to col ... | 2015 | 25388211 |
| variability of tetrodotoxin and of its analogues in the red-spotted newt, notophthalmus viridescens (amphibia: urodela: salamandridae). | efts and adult specimens (n = 142) of the red-spotted newt notophthalmus viridescens from various locations in canada and usa were analyzed for the presence of tetrodotoxin (ttx) and of its analogues 6-epitetrodotoxin and 11-oxotetrodotoxin. considerable individual variations in toxin levels were found within and among populations from new hampshire, new york, pennsylvania, and virginia ranging from non-detectable to 69 μg ttx per g newt. ttx and its analogues were absent in efts and adults from ... | 2012 | 22197660 |