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Showing 1 to 20 of 20 for “"Eurycea"”.
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Genetic Variation Among Populations of Eurycea Tynerensis and Neotenic Eurycea Multiplicata Griseogaster
… compare two morphologically similar species of Eurycea, Eurycea tynerensis and neotentic Eurycea multiplicata griseogaster. Enzymatic proteins encoded by fourteen loci were examined. Heterozygosity values were low, while FST values were high. Cluster analysis using Nei's identity values failed …
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Feeding kinematics of the grotto salamander, Eurycea spelaea
… have been studied, but the life history of Eurycea spelaea, the grotto salamander, is unique among the troglobitic plethodontids. This cave salamander transforms at metamorphosis into a terrestrial adult, but the eyes recede and the adult is blind. The feeding behavior of larval E. spelaea …
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Population Genetics and Conservation of Texas Hill Country Eurycea
… associated, neotenic salamanders of the genus Eurycea. I examined mitochondrial and nuclear sequence variation of seven Eurycea populations to address the following questions: 1) to what extent does gene flow occur among these populations?, 2) do river systems or aquifers serve as conduits for …
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Effects of Urbanization on Stress Response of Texas Eurycea salamanders
No abstract prepared.
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Genetic, Morphological, and Behavioral Analysis of the Oklahoma Salamander (Eurycea Tynerensis) in Southwestern Missouri
I investigated populations of Eurycea tynerensis which differed in coloration and life history mode. Using morphometrics and behavioral trials, I tested two sympatric color morphs for the presence of a cryptic species. I also obtained sequence data from the mitochondrial cytochrome-b gene of 21 …
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Oxygen Uptake as an Indictor of Metabolic Rate in a Neotenic Population of Eurycea Multiplicata
Eurycea multiplicata is a lungless salamander found in Busiek State Forest and Wildlife Area in Christian County, Missouri. There are several populations of this species which are neotenic, including the one used here. The present study measured oxygen uptake of these animals in the laboratory in …
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Proximate Causes of Alternative Reproductive Tactics in Blue Ridge Two-Lined Salamanders (Eurycea cf. wilderae)
<p>Alternative reproductive tactics (ARTs) refer to discrete variation in reproductive behavior between members of a sex and within a species. ARTs are present in Blue Ridge two-lined salamanders (<em>Eurcyea</em> cf. <em>wilderae</em>) in the form of male polymorphism. Two male morphs exist: …
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Genetic Variation of the Grotto Salamander, Typhlotriton Spelaeus in Missouri
… of genetic similarity with members of the genus Eurycea, particularly Eurycea tynerensis. In this study, Typhlotriton spelaeus collected from one location in Webster Co., Missouri was used as the outgroup. Following genetic analysis, T. spelaeus occupied an intermediate position on the phenogram …
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Predator Recognition and Avoidance in the San Marcos Salamander
… and efficiency. The San Marcos salamander (Eurycea nana) is a fully aquatic salamander endemic to the headwaters of the San Marcos River. Eurycea nana is subject to predation by a diverse community of native and nonnative fish predators. Despite the importance of predation pressures on prey …
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The Effects of Microhabitat and Land Use on Stream Salamander Occupancy and Abundance in the Southwest Virginia Coalfields
… to subwatershed land uses. Brook salamander (Eurycea spp.) occupancy show negative associations to large-scale land uses such as percent recent mining and percent forested. Whereas Eurycea spp. abundances are negatively influenced by suspended sediments, stream bank erosion and stream …
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The Impact of Logging on Aquatic Salamander Communities.
… <em>Desmognathus monticola</em>, <em>Eurycea wilderae</em>, and <em>Gyrinophilus porphyriticus</em>) were not affected. Body sizes of salamanders, used to represent age class, were analyzed to determine if the age/size structures of the populations were altered. This parameter was not …
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Response Of Salamanders To Chemical Stimuli From Predators In Natural Habitats
… stream-dwelling neotenic graybelly salamanders, Eurycea multiplicata griseogaster, to chemical stimuli from predatory banded sculpin, Cottus carolinae, (2) responses of larval ringed salamanders, Ambystoma annulatum, to chemical stimuli from predatory newts, Notophthalmus viridescens, and (3) …
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Friends in Low Places: Responses of a Benthic Stream Fish to Intra-Guild Alarm Cues
… affinis), and native Oklahoma Salamanders (Eurycea tyrnerensis), all of whom are vulnerable to the same predators. We tested the responses of darters to the damage-released alarm cues of conspecifics (positive control), minnows, and mosquitofish; alarm cues from Bumblebee Gobies …
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Variation in Behavior of Different Populations and Sex Classes of Paedomorphic Oklahoma Salamanders
… I examined paedomorphic Oklahoma salamanders (Eurycea tynerensis) from two spatially segregated populations in Missouri and Oklahoma to determine whether antipredator behavior, swimming speed, activity, and proximity to cover were influenced by sex, reproductive condition, or population of …
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Quantifying Metagonimoides oregonensis infection distribution and effects among stream salamander hosts
… on locomotor performance of D. quadramaculatus, Eurycea wilderae and Hyla versicolor. I did not see any effect on locomotor performance for any of the species.
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Variation in Salamander Life History and Community Composition Across an Urban Gradient in Atlanta, Georgia, USA
… that often persists in urban streams is the <em>Eurycea bislineata</em> (Two-lined Salamander) species complex. Many aspects of Two-lined Salamander life history are linked to environmental factors, particularly stream temperature, prey abundance, and stream hydrology. Urbanization threatens to …
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Habitat Associations Of Stream-Dwelling Salamanders At Multiple Spatial Scales In Central Kentucky Headwaters.
… barbouri<em> (streamside salamander) and <em>Eurycea cirrigera<em> (southern two-lined salamander) in a relatively undisturbed stream network in central Kentucky. I used likelihood ratio G-tests to identify associations between species and mesohabitat types (i.e., runs, riffles, and pools). I …
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Interacting effects of temperature and food on early growth of two plethodontid salamanders
… Plethodon cinereus (direct development) and Eurycea cirrigera (metamorphosis). Specifically, I was interested in examining the response of growth trajectories to different temperatures and food availability. I hypothesized that salamanders in the high-temperature treatment will grow faster …
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Individual and Interactive Effects of Maternally- and Trophically-Derived Mercury on Early Amphibian Development
… different ecological niches (Plethodon cinereus, Eurycea bislineata, and Bufo americanus) can bioaccumulate sufficient levels of Hg to warrant concern (Chapter 2) and female Bufo americanus transfer accumulated Hg to their eggs (Chapter 3). Maternal transfer of contaminants is a parental effect …
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The roles of brook trout and larval two -lined salamanders as predators in streams
… I also measured larval two-lined salamander (Eurycea bislineata) density and day and night activity on the stream substrate surface before and 1 yr following trout translocation.</p><p>Trout presence did not affect invertebrate benthic density, drift density, or drift periodicity; however, a …