Genetic variability in Guadalupe fur seals

Article Abstract:

The increase in the population of the Guadalupe fur seal (Arctocephalus townsend) was severely impeded for two occasions in the late 19th century because of commercial sealing. Since then, the seals have placed under protection at the Isla de Guadalupe, Mexico. The seals' nuclear and mitochondrial genomes were investigated by multilocus nuclear DNA profiling and mitochondrial DNA sequencing to determine the level of genetic variability. Findings showed a high degree of genetic variability.

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Genetic differentiation among Oregon Lake populations of the Daphnia pulex species complex

Article Abstract:

Daphnia, water fleas, are rare or absent from most lotic environments such as rivers and streams. Oregon lake populations of Daphnia from the D. pulex species were surveyed to test the relative ability of certain ecological factors to explain observed patterns in genetic differentiation in the lakes. It is proposed that the period widespread flooding in the lat Pleistocene could be important in homogenizing genetic differences.

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Genetic consequences of a severe population bottleneck in the Guadalupe fur seal (Arctocephalus townsendi)

Article Abstract:

Commercial sealers almost exterminated the Guadalupe fur seal in the 18th and 19th centuries. Population bottlenecks result in substantial loss of genetic variability with genetic measures indicating that the prehistoric population of these seals was robust and it had been increasing at some time during the late prehistoric period.

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