Topic
Measuring and managing genetic diversity and inbreeding in wild populations as part of species conservation.
Macquarie University researchers sorted brolga feathers collected from 2009 to 2023 into two genetic clusters, Victorian and northern. Simulations of population bottlenecks put the southern group, fewer than 1,000 adults, at higher risk of losing genetic diversity.
Reality
Northern Arizona University researchers analysed DNA from 121 spotted bats, the oldest about 2,100 years old, and found the most diversity in the US Southwest. The museum and cave samples give a baseline for a bat that is hard to count, though the reported finding maps diversity by place, with northern populations looking more vulnerable.
Reality
In University of East Anglia beetle lines where females had five males to choose among, genomes ended up carrying fewer damaging mutations at similar diversity. Mutation load, more than the mating arrangement, predicted which populations died out under inbreeding.
Reality
Restoration projects buy European flat oysters from Ireland, Norway and hatcheries. Sophie Valk's genetic mapping says two of those routes carry costs no supplier quotes.
Reality
Poor genetic health raises extinction risk and has a demonstrated remedy, yet conservation programs still treat it as a specialist concern next to land clearing and climate.
Reality