Patterns of genetic differentiation in Appalachian Desmognathine salamanders

Article Abstract:

There are complicated patterns of genetic differentiation within and among populations of salamanders of the Desmognathus ochrophaeus complex located within the Black and Great Craggy Mountains of western North Carolina. There is little differentiation among populations of D. ochrophaeus, the most widely distributed form, while there are indications of differentiation over very short distances among populations of D. carolinensis. There is no evidence of a relationship between genetic and geographic distance among D. ocoee populations living more than 100 km apart.

Salamanders

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DNA fingerprint variability within and among the silkworm Bombyx mori varieties and estimation of their genetic relatedness using Bkm-derived probe

Article Abstract:

DNA from eight male and eight female moths of each of 13 varieties of silkworm was extracted separately in order to study genetic diversity within silkworm varieties and to assess relatedness among them. Analysis of genetic variability was based on DNA fingerprints using Bkm-2(8) derived probe on BstNI- or HinfI-digested DNA from male and female individuals of the 13 silkworm varieties. There was seen to be a high degree of similarity in Bkm DNA hybridization pattern of individuals within a variety.

Genetic aspects, Silkworms

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The effects of habitat fragmentation on the genetic structure of small mammal populations

Article Abstract:

Very high levels of habitat fragmentation can lead to genetic differentiation and loss of genetic variation in small mammal populations. However, habitat fragmentation is generally more likely to have an impact on demographic and ecological processes than on genetic events. It has been established that there are links between demographic processes and genetic structure, with population abundances being vulnerable to reduction by both biotic and abiotic factors.

Mammals

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