Groundbreaking work to keep alive the nearly extinct northern white rhino subspecies — population, two — by in-vitro fertilization has been stalled by travel restrictions.
The Associated Press
The two northern white rhinos are female. The goal is to create viable embryos in a lab by inseminating their eggs with frozen sperm from dead males, then transfer them into a surrogate mother, a more common southern white rhino. It’s an international effort that includes conservationists from Kenya, the Czech Republic, Germany and Italy — many affected by closed borders or restricted travel.
Because those eggs are limited, scientists are working with embryos from southern white rhinos until they can establish a successful pregnancy. Seven or eight transfers so far have failed to take hold. A receptive female is needed, along with the knowledge of exactly when she ovulates. Even when travel can resume, another problem looms. The Ol Pejeta Conservancy also is home to primates — non-human primates — which are susceptible to the coronavirus, Galli said.
The ultimate goal is to create a herd of at least five animals that could be returned to their natural habitat in Africa. That could take decades.
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