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Showing 1 to 14 of 14 for “"Ambystoma Maculatum"”.
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Spatial Ecology of the Spotted Salamander <em>Ambystoma maculatum</em> During the Nonbreeding Season.
<p>Spotted Salamanders, <em>Ambystoma maculatum</em>, are a widely distributed pond-breeding amphibian that spends an estimated 95% of its life in woodlands surrounding breeding ponds. Their terrestrial ecology remains poorly understood. Few studies have tracked the movement patterns of Spotted …
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Conservation genetics of a spotted salamander (Ambystoma maculatum (Shaw 1802)) local population in southeast Tennessee
… industrialization on a local population of Ambystoma maculatum (Shaw 1802) using thirteen microsatellite markers. Most loci exhibited no loss of heterozygosity but the low effective population size may indicate vulnerability to future declines. No population substructure or sex-biased …
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Using Mesocosms to Model Optimal Levels of Body Size Variation in Larval Spotted Salamanders (Ambystoma maculatum)
… salamanders to evaluate these mechanisms. Larval Ambystoma maculatum were raised in mesocosm populations along a continuum of body size variation at both high and low densities. Rates of larval growth, survival, size at metamorphosis, and length of the larval period were used to characterize …
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Behavioral and Metabolic Responses of Juvenile Spotted Salamanders (Ambystoma Maculatum) to Alarm Cues from Damaged Skin and Predator Diet
… of lab-reared juvenile spotted salamanders, Ambystoma maculatum, to assess predation risk via chemical alarm cues and substrate markings from predators fed different diets. In the alarm-cue experiment, salamanders avoided substrates marked with alarm cues but not from noninjured conspecifics …
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Annual variation in timing, orientation and effects of weather on Jefferson salamander (Ambystoma jeffersonianum) and spotted salamander (Ambystoma maculatum) movements in central Kentucky
… successfully reproduced. Jefferson salamanders (Ambystoma jeffersonianum) and spotted salamanders (A. maculatum) were abundant and successful breeders and were the focus of this study. Breeding times between the two years varied for both species. Weather associations with prebreeding and …
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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
… 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 l’eau. Le projet a été réalisé en 2002 et …
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Population Size and Movements of Spotted Salamanders at South Holston Dam, Sullivan County, Tennessee.
… growing concerns about Spotted Salamanders (<em>Ambystoma maculatum</em>) due to habitat destruction and the uncertain future of their forested riparian habitat. In this study, I establish baseline data of a population of Spotted Salamanders so future monitoring of this population can be …
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A study of lungs in Rana catesbeiana tadpoles
… habitat of R. esculenta. In the salamander, Ambystoma maculatum, Hutchison (1963) found that not only is eighty percent of the carbon dioxide produced released through the skin but the skin is also responsible for more than fifty percent of the total oxygen uptake at 15°C and …
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Level of UV-B Radiation Influences the Effects of Glyphosate-Based Herbicide on Fitness of the Spotted Salamander
… plasticity of larvae of the spotted salamander (Ambystoma maculatum) under conditions that reflect open and closed canopy light regimes. Larval salamander responses to glyphosate-based herbicide varied depending on UV-B conditions. In general, it appears that an open canopy (i.e. greater UV-B …
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Physiological and behavioural responses to temperature and humidity in fossorial amphibians
… sensitivity of metabolism and water loss in Ambystoma maculatum. My findings suggested that acute changes in temperature affected energy and water budgets. However, acclimatory changes in temperature affected metabolism but not water loss. I then examined how temperature (17°C versus 22°C) …
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Effects of the aquatic to terrestrial habitat ratio on an amphibian predator and its prey
… of larvae of a long-lived amphibian, <italic>Ambystoma maculatum</italic>, across landscapes that varied in their aquatic to terrestrial ratios and found that larvae of this species were more dense in landscapes where aquatic habitat was scarce relative to terrestrial habitat. Because larval …
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Ecosystem Functional Consequences of Top Predator Mortality Due to the Invasive Shrub, Lonicera maackii
… the cascading effects of increased top predator (Ambystoma maculatum) mortality on larval salamander growth, macroinvertebrate densities, zooplankton densities, leaf litter mass loss, chlorophyll a abundance, biofilm growth, and availability of soluble nutrients. Of the 20 mesocosms that contained …
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The Influence of Tail Autotomy on Avoidance of Chemical Alarm Cues in Northern Zigzag Salamanders, Plethodon dorsalis
… cues of a rinse from the spotted salamander, Ambystoma maculatum. Chemical cue avoidance of autotomized conspecific tails approached significance in P. dorsalis. The results show no significant difference in the response of male and female salamanders to the chemical cues of P. richmondi or …
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Development and Application of Non-Traditional Vertebrate Models to Investigate Terrestrial Ecological Risk to 2,46-Trinitrotoluene Exposure
… were investigated in a terrestrial salamander: Ambystoma tigrinum (tiger salamanders). A. tigrinum was chosen since they are exclusively carnivorous, relatively long-lived, have a thin integument, and are large enough to investigate individual effects. These investigations were designed to mimic …