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Showing 1 to 20 of 32 for “"Plethodon"”.
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A Biological Investigation on Plethodon Larselli
The purpose of this study is to increase the presently-lacking biological knowledge of P. larselli. A study was made, therefore, on this species relative to its geographical distribution, habitat, dehydration and rehydration rates, response to induction with varying concentrations of a gonadotropic …
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A Behavioral Syndrome in the Southern Red-Backed Salamander (Plethodon Serratus)
… of adult southern red-backed salamanders (Plethodon serratus) in two contexts: (1) exploring unfamiliar territory, and (2) learning to adopt a foraging task. A behavioral syndrome was present for females; individuals that excelled in the foraging task also had a tendency to travel greater …
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Honest Signaling in Aggressive Contests Between Ozark Zigzag Salamanders (Plethodon Angusticlavius)
… between pairs of Ozark zigzag salamanders (Plethodon angusticlavius), individuals that performed bites spent more time exhibiting ATR prior to biting than individuals that did not bite. In addition, I examined whether ATR is an energetically costly behavior. In trials where the diet of the …
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Reproductive Patterns of Three Plethodon Salamanders Endemic to the Ouachita Mountains
Monthly collections of Plethodon caddoensis, the Caddo Mountain salamander, Plethodon ouachitate, the Rich Mountain salamander and Plethodon fourchensis, the Fourche Mountain salamander were made in 1985 and 1986. Reproductive patterns, fecundity and length-weight relationships were examined. When …
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SYNTOPIC COEXISTENCE AND HABITAT USAGE IN TWO MORPHOLOGICALLY SIMILAR PLETHODON SPECIES
… from large areas. In Hoosier National Forest, Plethodon cinereus and P. dorsalis coexist broadly and appear to share the same microhabitats. A number of factors might explain this unique case of coexistence. P. cinereus is more common in drier habitats and becomes more predominant as spring …
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A Comparison of Limb Development of the Salamanders Plethodon Cinereus and Ambystoma Mexicanum
… development of both limb pairs in the species Plethodon cinereus and Ambystoma mexicanum are compared. Using histology and microCT on embryonic and juvenile specimens, there are few observable differences in the relative order of skeletal element appearance, and both species exhibit preaxial …
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Response of the Ozark Zigzag Salamander (Plethodon Angusticlavius) to High and Low Level Threats
… foraging tactics of the Ozark zigzag salamander (Plethodon angusticlavius) under low and high levels of threat. I predicted that the salamander would specialize on the most profitable prey type under low levels of threat but would forage randomly under high threat. Salamanders in the blank …
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A Role For Parasites in the Behavior of the Ozark Zigzag Salamander (Plethodon Angusticlavius)
… the behavior of the Ozark zigzag salamander (Plethodon angusticlavius), that was naturally infected with the larval stage of an ectoparasitic mite (Hannemania eltoni) to determine if parasitism was associated with altered behavioral patterns. Experiments were designed to answer three specific …
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Where the Zigzags go: a microhabitat analysis for the Plethodon dorsalis complex within the Tennessee River gorge
… animals such as the Northern Zigzag salamander (Plethodon dorsalis) are known contributors to essential nutrient cycles within their respective habitats. Knowing that these sensitive creatures serve as bioindicators for the overall health and quality of many ecosystems, we should aim to …
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Influence of Physical Stress, Sex, and Body Size on Metabolic Rates of Ozark Zigzag Salamanders, Plethodon Angusticlavius
Ozark zigzag salamanders (Plethodon angusticlavius) are exposed to a variety of stressors, each eliciting a combination of behavioral and physiological responses. One response is an increase in oxygen consumption rate. Individuals were physically stressed to simulate a predatory attack, and oxygen …
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The Influence of Tail Autotomy on Avoidance of Chemical Alarm Cues in Northern Zigzag Salamanders, Plethodon dorsalis
… alarm cues in northern zigzag salamanders, Plethodon dorsalis. Adult salamanders were placed into Petri dishes with a choice between treated substrate (filter paper treated with chemical cues) or untreated substrate (filter paper treated with distilled water). After a period of habituation, …
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The Influence Of Predation Risk On The Foraging And Territorial Behavior Of The Ozark Zigzag Salamander (Plethodon Angusticalvius)
… such trade-offs in the Ozark zigzag salamander, Plethodon angusticlavius. I performed a series of laboratory experiments to determine whether increased predation risk decreased foraging behavior and territorial defense. Foraging success of salamanders declined in the presence of both substrate …
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Behavioral and Metabolic Responses of the Southern Red-Backed Salamander (Plethodon Serratus) to Predatory Stimuli: Influence of Body Size
… are limited for southern red-backed salamanders (Plethodon serratus), so chemoreception may be important for predator detection. I conducted experiments to examine the effect of chemical stimuli from predatory ringneck snakes on the foraging behavior and metabolic rates of P. serratus. Individuals …
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Conservation Genetics and Mark-Recapture Monitoring of the Rare Pigeon Mountain Salamander (Plethodon petraeus) within a Highly Restricted Range
… of the Pigeon Mountain Salamander, <em>Plethodon petraeus</em>, is restricted to roughly 17 kilometers along the eastern flank of Pigeon Mountain in northwest Georgia. Consequently, <em>P. petraeus</em> is highly vulnerable to the impacts associated with amphibian declines, a fact that …
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Effects of Prior Exposure to Predatory Chemical Cues on Territorial and Foraging Behaviors of the Ozark Zigzag Salamander, Plethodon Angusticlavius
… have shown that Ozark zigzag salamanders (Plethodon angusticlavius) make behavioral changes when in direct contact with predatory chemical cues. I predicted that prior exposure to a predator cue would also affect the subsequent behavior of these salamanders. I collected chemical cues from …
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Natural Environmental Gradients Predict The Microhabitat Use, Fine-Scale Distribution, And Abundance Of Three Woodland Salamanders In An Old-Growth Forest
<p>Woodland salamanders (Plethodonidae: Plethodon)－a group of sensitive, direct developing, lungless amphibians－are particularly responsive to gradients in environmental conditions. Because of their functional dominance in terrestrial ecosystems, woodland salamanders are responsible for the …
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Identification of Sex and Parasitism via Chemical Cues by the Ozark Zigzag Salamander
… transfer among woodland salamanders of the genus Plethodon. These cues have been shown to convey a wide variety of information, and are used to establish territorial boundaries. Responses to chemical cues can include changes in both behavior and energy consumption. The ability of Ozark zigzag …
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Comparison of herpetofaunal species composition and response to edge on the Camp Dawson Collective Training Area, Preston County, West Virginia
… and also from area searches. Redback salamander (Plethodon cinereus), red-spotted newt (Notophthalmus v. viridescens ), eastern American toad (Bufo a. americanus), and wood frog (Rana sylvatica) were most common in pitfall arrays; mountain dusky salamander (Desmognathus ochrophaeus), Appalachian …
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Genetic Structure of Yonahlossee Salamander Populations.
<p><em>Plethodon yonahlossee</em> is the largest eastern Plethodontid salamander. It has been classified as a species of greatest conservation need by the Tennessee Wildlife Resources Agency (TWRA). Found only in mountainous areas along the borders of Tennessee, North Carolina, and Virginia, …
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