Beyond the point of no return? A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish reveals that one is inbred in the wild

Article Abstract:

A comparison of genetic diversity in captive and wild populations of two nearly extinct species of Goodeid fish Ameca splendens and Zoogoneticus tequila reveals that one is inbred in the wild. Both species showed clear evidence of a decline in effective population size, but the population size of A. splendens were smaller than that of the wild population but the wild population of Z. tequila did not show a significantly greater estimate.

Mexico, Finfish, Finfish Fishing, Salt Water Fish, Demographic aspects, Biological diversity, Biodiversity, Fishes, Fish breeding, Marine fishes

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Evolution speciation in a cricket

Article Abstract:

A study was conducted to examine the speciation rate of any arthropod especially in the case of Hawaiian Laupala and to show that this rapid speciation had driven primarily by changes in sexual behavior. The results reveal that most cricket species have shown speciation that can occur without changes in acoustic communication, especially in allopatry, and that some single species can be polymorphic in song patterns.

Genetic polymorphisms, Crickets

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Gene replacement and the genetics of speciation

Article Abstract:

Understanding the process of speciation represents a major challenge in biology. Studies present new light on the process of speciation.

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