Download or read book Adaptation to Acidification in Spotted Salamanders Ambystoma Maculatum written by Nicholas Gervais and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Declines in amphibian populations have been noted since the late 1980's with many of the causes linked to habitat contamination and destruction by natural and anthropogenic sources. Amphibians with bi-phasic life histories have been thought to be particularly vulnerable to negative environmental conditions but there is much evidence of their resilience and capacity to survive in degraded or contaminated environments. Larval amphibians in small permanent or ephemeral ponds may be particularly vulnerable to altered environmental conditions and may face the greatest pressure to adapt. In Chapter 1, I briefly review the evidence of amphibian declines and how populations may adapt to and overcome assorted negative environmental factors. In Chapter 2, I investigated the phenomenon of adaptation in a particular circumstance. I collected Spotted Salamander (Ambystoma maculatum) egg masses from a population breeding in a naturally acidic pond called Bat Lake, as well as four other populations living in lakes closer to pH neutral. To determine if the salamanders were adapted to their particular breeding lakes, I used common garden experiments in the lab where I raised larvae from each of the lakes in the waters from all the other lakes, as well as their own and compared the survival rates, size at metamorphosis and time to metamorphosis. Bat Lake larvae grew larger and survived longer in their acidic native breeding pond water than in the waters of other lakes suggesting they are adapted to their native pond waters. The larvae from the other lake populations showed similar results and fared better in their native waters than in the Bat Lake water. Based on these results, in Chapter 3, I tested if pH, specifically, was causal. I raised larvae from the five populations in waters of different pH (4.0, 5.5, 7.0), reasoning that if the Bat Lake population was more adapted to the high acidity compared to the other populations, the larvae from Bat Lake should demonstrate higher fitness correlates at lower pH than larvae of other populations. In this experiment, the Bat Lake larvae survived longer and grew larger in the highly acidic water than did larvae from the other populations. My results are consistent with natural selection for tolerance of low pH conditions tolerance among Bat Lake Spotted Salamander larvae and indicate that the salamanders from Bat Lake potentially exhibit signs of local adaption to the highly acidic conditions in which they live. This study was unable, however to prove whether this adaptation was due to evolutionary change, phenotypic plasticity, maternal effects or some other unknown factor. " --

Download or read book The Effects of Acid Precipitation on the Larval Development of the Spotted Salamander Ambystoma Maculatum written by Robert W. Ling and published by . This book was released on 1985 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Acid Precipitation on Embryonic Mortality of Spotted Salamanders Ambystoma Maculatum and Jefferson Salamanders Ambystoma Jeffersonianum in the Connecticut Valley of Massachusetts written by Robert Peter Cook and published by . This book was released on 1978 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physiological and Behavioral Responses of Larval Spotted Salamanders Ambystoma Maculatum to Various Concentrations of Oxygen written by Lyn C. Branch and published by . This book was released on 1977 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Ecological Study of the Spotted Salamander Ambystoma Maculatum and Jefferson Salamander A Jeffersonianum in West Virginia written by Seth J. Myers and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Factors Affecting Ontogentic Diet Shifts in Larval Spotted Salamanders Ambystoma Maculatum written by April Kellie Fink and published by . This book was released on 2010 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Variation in Spotted Salamanders Ambystoma Maculatum from Missouri written by Robert Powell and published by . This book was released on 1984 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Efficacy of Developmental Stability Analysis to Detect Sublethal Acid Stress in the Spotted Salamander Ambystoma Maculatum written by and published by . This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Parasites Metals and Environmental Conditions on Spotted Salamander Ambystoma Maculatum Populations Breeding in Northern Arkansas written by Heather M. DeMali and published by . This book was released on 2014 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Terrestrial Habitat Use by Radio implanted Spotted Salamanders Ambystoma Maculatum written by Ashley Lynn Nussbaum and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Acid Precipitation Upon the Hatching Rate of the Eggs and the Survival Rate of the Larvae of the Spotted Salamander Ambystoma Maculatum written by Karen Markel Howser and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pre metamorphic Survivorship in the Spotted Salamander Ambystoma Maculatum is Positively Associated with Inter allelic Distance Mean D2 written by Lori A. Erb and published by . This book was released on 2003 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavioral Activity and Feeding Patterns of the Spotted Salamander Ambystoma Maculatum written by Jessica Michelle Fahey and published by . This book was released on 2007 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Antipredator Adaptations of Spotted Salamander Larvae Across a Geographic Gauntlet of Predation Risk written by Jessica Marie Rack and published by . This book was released on 2016 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Microsatellites to Determine the Effective Population Size of a Local Population of Spotted Salamanders Ambystoma Maculatum written by Caroline G. Letourneau and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spotted salamander (Ambystoma maculatum) is an aggregate breeding amphibian that is dependent upon vernal pools for its reproductive life cycle. However, as wetland habitats become increasingly fragmented as the result of human activity, populations of A. maculatum may become progressively isolated from one another. Such isolation can impact the genetic variation of a population and thus pose challenges to its long term survival. This study used nine microsatellite loci to determine the levels of heterozygosity and the effective population size (Ne) of a population of spotted salamanders (Ambystoma maculatum) located at Wheaton College in Norton, Massachusetts. The mean observed heterozygosity was calculated as 0.59, which is similar to estimates of other A. maculatum populations, and Ne was estimated between 42 and 60 individuals. These values suggest that the Wheaton College vernal pool population of A. maculatum is genetically stable in the short term.

Download or read book Influence of Landscape Arrangement and Wetland Condition on Breeding Dynamics of Ambystoma Maculatum spotted Salamander in Maine USA written by Amanda Frances Shearin and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Forest Clear Cutting on Spotted Salamander Ambystoma Maculatum Migration written by Jessica Susannah Veysey and published by . This book was released on 2006 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: