Gene flow and introgression within and among three species of rockfishes, Sebastes auriculatus, S. caurinus, and S. maliger

Article Abstract:

Possible gene flow and introgression within and among three species of rockfishes, namely, Sebastes auriculatus, Sebastes caurinus and Sebastes maliger, were investigated. Nuclear and cytoplasmic evidence were analyzed to determine the geographic variability within each species. Results showed that abrupt changes in allele frequency over relatively short geographic distances occurred in nearshore species when there is no interruption in gene flow or habitat. Changes in gene frequencies of Sebastes maliger were very noticeable.

Biodiversity, Mitochondrial DNA, Species diversity, Fish populations, Gene frequency, Scorpaenidae, Scorpionfishes

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Widespread utility of highly informative AFLP molecular markers across divergent shark species

Article Abstract:

An amplified fragment length of polymorphism method that can be applied universally to sharks in order to identify highly informative genome-wide polymorphisms from 12 primer pairs is described. An advantage of this method over traditional markers is that hundreds to thousands of dominant bi-allelic loci are evaluated across the entire genome that can reduce errors in diversity estimates and increase sensitivity.

Australia, Finfish, Finfish Fishing, Sharks

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Estimation of effective population size for the long-lived darkblotched rockfish Sebastes crameri

Article Abstract:

Age-specific demography and microsatellite DNA data that were combined from cohorts of the long-lived marine darkblotched rockfish to estimate variance effective population size are discussed. Significant spatial structure and genetic isolation of distance show that darkblotched rockfish is not properly explained by the panmictic model.

Canada, Bass, Basses (Centrarchidae)

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