31/08/2026
Can you help protect a species' genetic future simply by changing where it finds water?
A U.S.-Israel BSF-supported study suggests that it may be possible - and the results are striking.
Researchers studied a genetically vulnerable population of Asiatic wild asses in Israelโs Negev Desert, where territorial males establish and defend areas around water sources to gain access to females. With only one water source, just 16โ18% of adult males ever got the chance to reproduce - a genetic bottleneck in the making.
Then the team added two more water sources. That's it. No relocation. No managed breeding. Just giving previously excluded males somewhere new to stake a claim.
Following the change, the share of reproducing males jumped to 42โ48%, more than double the previous level.
It's a rare case where a relatively simple, low-cost, noninvasive habitat intervention could meaningfully boost a species' resilience - a strategy that may matter more and more as climate change reshapes where water, food and shelter naturally occur.
Behind the finding were 864 noninvasive f***l samples, 535 genetic markers and rigorous parentage analysis. Published in Ecological Applications, the research included BSF partners Dr. Shirli Bar-David and Prof. Amos Bouskila of Ben-Gurion University of the Negev, together with Prof. Alan Templeton of Washington University in St. Louis and Prof. Daniel Rubenstein of Princeton University.
The study marks the third BSF-supported collaboration between Dr. Bar-David and Prof. Templeton, reflecting a sustained U.S.-Israel research partnership in conservation and population genetics.
๐ Read more: https://www.eurekalert.org/news-releases/1125070
๐ See study: https://doi.org/10.1002/eap.70226
๐ท Photo credit: Naama Shahar