Publications by authors named "Sharon Renan"

After its recent rediscovery, the Hula painted frog (Latonia nigriventer) has remained one of the world's rarest and least understood amphibian species. Together with its apparently low dispersal capability and highly disturbed niche, the low abundance of this living fossil calls for urgent conservation measures. We used 18 newly developed microsatellite loci and four different models to calculate the effective population size (N) of a total of 125 Hula painted frog individuals sampled at a single location.

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Article Synopsis
  • - Effective population size (N) is crucial for conservation biology and can be estimated through genetic surveys, alongside predictions based on demographic data and life-history traits.
  • - In a study on the conservation of Asiatic wild ass, genetic data estimated the variance effective size at 24.3, revealing that polygyny significantly influences genetic drift and overall effective size.
  • - The findings suggest that management strategies should focus on improving conditions for dominant males, such as increasing water availability, to enhance the effective population size and genetic diversity.
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One of the greatest challenges of effective conservation measures is the correct identification of sites where rare and elusive organisms reside. The recently rediscovered Hula painted frog (Latonia nigriventer) has not been seen for many decades and was therefore categorized extinct. Since its rediscovery in 2011, individuals from the critically endangered species have been found, with great effort, only in four restricted sites.

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Small populations are prone to loss of genetic variation and hence to a reduction in their evolutionary potential. Therefore, studying the mating system of small populations and its potential effects on genetic drift and genetic diversity is of high importance for their viability assessments. The traditional method for studying genetic mating systems is paternity analysis.

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Noninvasive genetic sampling has increasingly been used in ecological and conservation studies during the last decade. A major part of the noninvasive genetic literature is dedicated to the search for optimal protocols, by comparing different methods of collection, preservation and extraction of DNA from noninvasive materials. However, the lack of quantitative comparisons among these studies and the possibility that different methods are optimal for different systems make it difficult to decide which protocol to use.

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