Two rare pregnancies spark hope for Sumatran rhinos — but also concerns about inbreeding
Two critically endangered Sumatran rhinos are pregnant at an Indonesian sanctuary, a rare success for a species reduced to a few dozen animals in the wild. The pregnancies also highlight the genetic constraints facing the country’s captive-breeding program. Indonesia’s Ministry of Forestry and the NGO Yayasan Badak Indonesia (YABI), which manages the sanctuary, announced the […]
Two critically endangered Sumatran rhinos are pregnant at an Indonesian sanctuary, marking a rare success for a species that has dwindled to only a few dozen in the wild. The pregnancies, announced by Indonesia’s Ministry of Forestry and the NGO Yayasan Badak Indonesia, highlight the genetic constraints facing the country’s captive-breeding program.
Ratu, who gave birth to her fourth calf, is fathered by her full brother Andalas, while her daughter Delilah is expecting her second calf, sired by her paternal uncle Harapan. This unique situation, where all males in the breeding program are related, poses challenges for experts seeking to maximize genetic diversity while considering factors such as body size.
The 11 animals in Indonesia’s breeding program are the only captive Sumatran rhinos worldwide, and the current critical situation takes precedence over genetic diversity considerations.
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