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Showing 1 to 17 of 17 for “"Rana sylvatica"”.
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The Population Genetics Of The Wood Frog, Rana Sylvatica, Across Its Geographic Range
… the continental-wide range of the wood frog, Rana sylvatica. Levels of genetic differentiation between sampled populations were investigated as was the possible locations of glacial refugia for this species. DNA microsatellites were used as the genetic marker. This study found significant …
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Structural and Biological Characterization of Antimicrobial Peptides from Rana Sylvatica and Kassina Senegalensis
… and one peptide, termed brevinin 1SY (SY for sylvatica), from the skin of the wood frog, Rana sylvatica, have been isolated in pure form and characterized both structurally and biologically. Of these three peptides, kassinatuerins 1 and 2 contain a C-terminally a-amidated residue and fall into …
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Effects of exposure to 17α-ethynylestradiol during larval development on the African clawed frog (Xenopus laevis) and the wood frog (Rana sylvatica)
… clawed frog (Xenopus laevis) and the wood frog (Rana sylvatica). To do so, X. laevis were exposed to 0.09, 0.84, or 8.81 µg EE2/L throughout the larval period and early post-metamorphic development (89 d) and R. sylvatica were exposed to 1.08, 9.55, or 80.9 µg EE2/L throughout the larval period …
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Regulation of the Nuclear Factor of Activated T Cell (NFAT) Family of Transcription Factors in the Freeze Tolerant Wood Frog, Rana sylvatica
During winter, wood frogs (Rana sylvatica) can endure whole body freezing with 65-70% of total body water converted to extracellular ice. As a result, cells experience extensive dehydration when water exits as well as anoxia due to interruption of blood flow. Adapting to such challenges requires …
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Relations entre le milieu terrestre, la qualité de l'eau et les amphibiens dans les étangs printaniers du Nord-Ouest du Nouveau-Brunswick
… étangs printaniers, soit la grenouille des bois (Rana sylvatica), la salamandre maculée (Ambystoma maculatum) et la salamandre à points bleus (Ambystoma latérale) a été examinée en relation avec la structure du peuplement, les microhabitats en périphérie de l’étang et les paramètres chimiques de …
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Effects of Atrazine and Metolachlor on Snails, Tadpoles, and Their Trematode Parasites
… the parasites and/or second intermediate hosts, Rana clamitans and Rana sylvatica tadpoles, to the pesticide mixtures and examined subsequent infection levels in the tadpoles. The atrazine and metolachlor mixtures had no significant effects on parasite load in the laboratory. Newly shed parasites …
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Monitoring amphibian populations and the status of wood frogs and boreal chorus frogs in the Kawuneeche Valley of Rocky Mountain National Park
… of variation in the detectability of wood frog (Rana sylvatica) egg masses. Model selection results and model-averaged estimates provided evidence that detection probability varied between years which emphasize the importance of accounting for detection probability when using egg mass counts to …
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Comparison of herpetofaunal species composition and response to edge on the Camp Dawson Collective Training Area, Preston County, West Virginia
… toad (Bufo a. americanus), and wood frog (Rana sylvatica) were most common in pitfall arrays; mountain dusky salamander (Desmognathus ochrophaeus), Appalachian seal salamander (Desmognathus m. monticola), and redback salamander were most common from searches. Northern red salamander ( …
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Micromanaging Freeze Tolerance: The Biogenesis and Regulation of microRNAs in Frozen Frogs
… temperatures plummet below 0°C, the wood frog (Rana sylvatica) freezes up to 65% of its body water in extracellular ice masses, displaying no measurable brain activity, no breathing, and a flat-lined heart. Various molecular mechanisms including microRNAs, a multifunctional group of short …
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Amphibian Community Similarity Between Natural Ponds And Constructed Ponds Of Multiple Types In Daniel Boone National Forest, Kentucky
… method). Additionally, wood frogs (<em>Rana sylvatica</em>) and marbled salamanders (<em>Ambystoma opacum</em>) were almost exclusively found in natural, ephemeral ponds, whereas large ranid frogs (<em>R. clamitans, R. catesbeiana, R. palustris</em>) were only found breeding in …
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Fish and Amphibian Occurrence in Waterfowl Production Area Wetlands in Minnesota During 1992
… fish. The likelihood of catching Leopard frogs (Rana pipiens) and wood frogs (Rana sylvatica) was lower for barrel minnow traps when compared to clover leaf traps. Agassiz Lake Plain, percent floating vegetation, and emergent trap locations were positively associated with frog presence. Ten Class …
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Abiotic Factors Underlying Stress Hormone Level Variation Among Larval Amphibians
… spotted salamander (A. maculatum), wood frog (Rana sylvatica), and grey treefrog (Hyla versicolor). Chapter II examined corticosterone level differences throughout development in A. jeffersonianum and R. sylvatica larvae under field, mesocosm, and laboratory venues. Baseline corticosterone …
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Anura of Eastern South Dakota: Their Distribution and Characteristics of Their Wetland Habitats, 1997-1998
… and P. t. maculata), northern leopard frog (Rana pipiens) and great plains toad (Bufo cognatus) were cosmopolitan in distribution occurring in all 44 counties of eastern South Dakota. The American toad (Bufo americanus), Canadian toad (Bufo hemiophrys) and Woodhouse's toad (Bufo woodhousii) …
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The sublethal effects of 2,4-D dimethylamine on wood frog tadpoles in Saskatchewan
… acid (2,4-D) on tadpoles of the wood frog (Rana sylvatica). Wood frog tadpoles in the first experiment were exposed to 2,4-D amine at 0.1, 1.0 and 100 ug/L in outdoor microcosms. Morphometric measures (total length, snout-vent length (SVL) and wet weight) were taken at metamorphic climax. …
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Réponse des amphibiens aux routes pavées dans le grand écosystème de Kouchibouguac: test de l'effet de barrière
… en 2003 et 2004 et ciblait la grenouille verte ( Rana clamitans) et la grenouille des bois (Rana sylvatica ). En utilisant des pièges-fosses et des clôtures de dérive, nous avons examiné les effets des routes sur les patrons de dispersion des juvéniles. Nous avons mesuré plusieurs variables …