One obvious effect of climate change will be the spread of invasive species and the subsequent ecological, commercial, and health repercussions. Therefore, studies that address the patterns of colonization and possible underlying genetic mechanisms that may lend to being a successful invader are worth paying attention to IMHO. Three papers have come out recently that each focus on genetic components of invasive species in either the terrestrial, marine, or freshwater realm.
First up, Sherpa et al. examined the role genetic admixture plays in the invasion biology of the Asian tiger mosquito, Aedes albopictus, the most invasive mosquito species in the world, with established populations now on every continent save Antarctica. It is a vector for dengue, zika, and other nastiness so understanding where host invasions originated, how fast they can spread, and adaptive advantages of founder populations has important implications for epidemiology and vector and disease biology. The authors looked at A. albopictus populations from Reunion Island and Europe. Tropical Reunion Island, with both a wetter and a drier coast represents an older invasion (>100 years).
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