Die etablierte Erhaltungspraxis, Tiere aus großen, genetisch vielfältigen Populationen in kleine Gemeinschaften von Inzucht gefährdeten Arten zu verlagern, kann es riskieren, mehr schädliche Einführung als nützliche Genvarianten in die bedrohte Gruppe einzuführen, so eine neue Studie.
https://news.osu.edu/genetic-rescue-of-endangered-species-may-risk-bad-mutations-slipping-through/?utm_campaign=omc_science-medicine_fy26&utm_source=reddit&utm_medium=social
3 Kommentare
Article published in Molecular Ecology: [https://doi.org/10.1111/mec.70014](https://doi.org/10.1111/mec.70014)
Keep the birth rate below replacement rate and get the human population back down under 2 billion over the next few centuries. Corral people in moderate-density lifestyles. Let nature do what nature does.
I wonder if the larger, more genetically diverse populations are buffered against deleterious mutations because of their greater relative heterozygosity?
Bad mutations might be more likely to re-occur in a larger population but in turn are buffered by good ones. Small populations are more subject to drift and the genetic load of individuals is higher, so introgression of a few non-optimal genes could depress the inbred population’s overall fitness.