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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Pseudacris"”.
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Population genetics of the Illinois chorus frog (Pseudacris illinoensis)
The Illinois chorus frog (Pseudacris illinoensis) is a fossorial species found only in sandy substrates of Illinois, Missouri, and Arkansas. The genetic diversity of the Illinois chorus frog (ICF) in Illinois has not been investigated prior to this study. Given its conservation status and the …
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Patterns and processes of speciation in North American chorus frogs (Pseudacris)
… resulting from this process in the chorus frogs (Pseudacris). I first lay the foundation for this work by constructing phylogenies based on molecular data. I then address broad-scale questions regarding the abiotic factors thought to drive speciation. I examine evolution of reproductive signals …
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Sun-compass orientation in the treefrogs, Hyla crucifer and Pseudacris triseriata triseriata
… (Hyla crucifer) and the western chorus frog (Pseudacris triseriata triseriata). All animals were tested outdoors in a circular test pool from which all visible landmarks were obscured. Response on the Y-axis varied with the life history stage, and significant interspecific differences in …
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Seasonal movements of western chorus frogs (Pseudacris triseriata triseriata) tagged with radioactive cobalt
The movements of Western Chorus Frogs (Pseudacris, triseriata triseriata) were studied from March, 1970, to March, 1971, at the Robert H. and Esther L. Cooper Woodland Area near Muncie, Delaware County, Indiana. The objectives of the study were to determine: (1) the time and rate of dispersal from …
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An Investigation of the Effect of Malathion on Adaptive Plasticity of Pseudacris sierra
… adaptive plasticity in the Sierran Treefrog, <em>Pseudacris sierra.</em> Anuran tadpoles suffer high mortality rates due to predation. In response to strong selective forces relating to these high predation rates, tadpoles evolved the ability to adaptively respond to predators through …
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Comparative Toepad Morphology in Chorus Frogs (Genus Pseudacris): Arboreal, Terrestrial, and Ground Dwelling Species
… in the arboreal Hyla chrysoscelis, semiarboreal Pseudacris crucifer, terrestrial P. triseriata, P. brachyphona, and P. brimleyi, semiaquatic Rana catesbiana, and fossorial Pseudacris streckeri and ornata, and Gastrophryne carolinensis, using scanning electron microscopy. The arboreal and …
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The Effect of Arginine Vasotocin on Cryoprotectant Production during Freezing in the Pacific Chorus Frog, Pseudacris Regilla
… AVT levels (p=0.05) during freezing by <em>Pseudacris regilla.</em> The AVT antagonist caused a dramatic reduction (~50%) in hepatic glucose and glycerol concentrations. These results demonstrate that AVT is involved with the process of cryoprotectant sourcing during freezing events in …
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Evaluating efficacy of anti-Batrachochytrium dendrobatidis probiotic treatment on Pacific Chorus Frogs (Pseudacris regilla) at current and modeled climate change temperatures
… isolated from the skin of Pacific chorus frogs (Pseudacris regilla) and Columbia spotted frogs (Rana luteiventris) in Turnbull National Wildlife Refuge (TNWR) as potential probiotics. One of these isolates, identified as Pseudomonas silesiensis, was tested as a probiotic treatment on P. regilla. …
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The effects of salinity on the cutaneous microbiome and pathogen infection on the Pacific Tree frog (Pseudacris regilla) in Monterey Bay, California, USA
… microbiome of the common Pacific Tree Frog (Pseudacris regilla) across a salinity gradient (0.05-30 ppt) at 10 sites within the reserve. I hypothesized that amphibians in higher saline environments would have lower Bd infection rates and different microbial communities compared to freshwater …
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Examining the impacts of pesticide exposure on the survivorship and development of the Great Basin Spadefoot (Spea intermontana) and the Pacific Treefrog (Pseudacris regilla) in a laboratory environment
… (Spea intermontana and Pacific Treefrog (Pseudacris regilla) were collected from reference sites in the South Okanagan of BC, and transported to a federal government laboratory facility in North Vancouver, BC. Here, 8-day LC20 experiments were conducted on the young embryos and young …
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Predicting Amphibian Occurrence Based on Wetland and Landscape Level Factors in Montana
… supported for Rana pipiens, Bufo woodhousii, Pseudacris maculata, and Pseudacris regilla. The probability of Ambystoma macrodactylum presence is highest at breeding sites that are surrounded by forested areas. The western population of Ambystoma tigrinum was positively associated with an …
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Predicting Amphibian Occurrence Based on Wetland and Landscape Level Factors in Montana
… supported for Rana pipiens, Bufo woodhousii, Pseudacris maculata, and Pseudacris regilla. The probability of Ambystoma macrodactylum presence is highest at breeding sites that are surrounded by forested areas. The western population of Ambystoma tigrinum was positively associated with an …
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Non-Ranid Anurans of the Mio-Pliocene Gray Fossil Site, Tennessee
… morphotypes of <i>Hyla</i>(tree frogs), and <i>Pseudacris</i> cf. <i>P. brachyphona</i>(mountain chorus frog). Occurrence of these Anura support a paleoecological environment described as warm, moist, and wooded.</p>
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Changes in the Distribution of "Acris crepitans blanchardi", with Studies of Nesting Microhabitat and the Possible Impact of Ultraviolet-B Radiation
… "Bufo americanus", "Hyla versicolor complex", "Pseudacris triseriata", and "Rana pipiens". The eggs were subjected to three different light treatments, allowing full transmittance of light, blocking out UV-B and lower wavelengths, and blocking out lower than UV-B wavelengths. "Acris crepitans", …
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The Effects of Climate Change and Long-term Fire Suppression on Ephemeral Pond Communities in the Southeastern United States
… (Ambystoma bishopi) and Ornate Chorus Frogs (Pseudacris ornata). Chapter 1 used a modeling approach to relate wetland hydroperiods to current climate conditions and to hindcast historic conditions. Over the past 118 years, hydroperiods were often unfavorable for A. bishopi reproduction, and in …
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Persistence of ranavirus in an East-Central Illinois amphibian community
… between R. sylvatica and chorus frog (Pseudacris spp.) tadpoles because within created wetlands, Pseudacris tadpoles only survived to metamorphoses after an outbreak removed 100% of R. sylvatica tadpoles. Growth and development rates were similar in wetlands that experienced ranavirus …
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Regulation of Seat-patch Water Potentials in Anurans
… pipiens, L. catesbeiana, Anaxyrus boreas, Pseudacris cadaverina and P. hypochondriaca. Seat-patch water potentials were inferred from changes in body mass between frogs and different aquatic environments whose water potentials were manipulated by adjusting the osmolality of sucrose. Rates …
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Impact of Chytrid fungus pathogen on the skin microbiome of frogs in northern Idaho and Turnbull National Wildlife Refuge, Washington
… Columbia spotted frogs and Pacific chorus frogs (Pseudacris regilla) were swabbed at Turnbull National Wildlife Refuge (TNWR) to measure Bd prevalence and infection intensity. Prevalence among Pacific chorus frogs (91.43%) was greater than prevalence among Columbia spotted frogs (67.74%), and …
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Amphibians in a changing world: assessing the effects of warming and drying on amphibian larvae and the relationships between larval survival, body size, and time to metamorphosis
… sylvaticus</em>) and spring peepers (<em>Pseudacris crucifer</em>), to simulated warming and drying in experimental ponds. Over 13 weeks, we manipulated temperature and water levels in ponds to produce 4 treatments: control, drying, warming, and drying + warming. Our manipulations created …
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The role of the skin microbiome in amphibian pathogen susceptibility in Turnbull National Wildlife Refuge
… luteiventris, N=46) and the Pacific Chorus Frog (Pseudacris regilla, N=72) in TNWR. We characterized skin bacterial diversity with 16S rRNA gene amplicon sequencing on Illumina MiSeq, and quantified Bd infection intensity with qPCR. P. regilla had significantly higher Bd infection intensities …
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