Global mtDNA genetic structure and hypothesized invasion history of a major pest of citrus, (Hemiptera: Liviidae).

The Asian citrus psyllid Kuwayama is a key pest of citrus as the vector of the bacterium causing the "huanglongbing" disease (HLB). To assess the global mtDNA population genetic structure, and possible dispersal history of the pest, we investigated genetic variation at the gene collating newly collected samples with all previously published data. Our dataset consists of 356 colonies from 106 geographic sites worldwide.

Loss of genetic diversity as a consequence of selection in response to high CO.

Standing genetic variation may allow for rapid evolutionary response to the geologically unprecedented changes in global conditions. However, there is little known about the consequences of such rapid evolutionary change. Here, we measure genetic responses to experimental low and high CO levels in purple sea urchin larvae, .