Helping rare species strut their stuff.
To increase genetic diversity in this population, researchers are turning to in vitro fertilization techniques developed for humans. In December, a lowland gorilla at the Cincinnati Zoo and Botanical Garden is expected to give birth to the first test-tube gorilla--and the first test-tube endangered primate--says zoo scientist Betsy L. Dresser. A gorilla at an Omaha zoo provided the sperm.
In vitro techniques enable researchers to take sperm and eggs from distant animals and create embryos that they can implant in a female or freeze for later use, Dresser explains.
Zoo scientists may one day import sperm from wild gorillas for use in captive creatures, she says, or even export zoo-grown embryos for implantation in wild animals.
In Kenya, zoo researchers have implanted embryos from bongos, a rare antelope, into the more common eland. The surrogates care for the babies as if they were their own flesh and blood, although elands don't share bongos' chestnut brown coloring, says Dresser. Eventually, researchers would like to use lowland gorillas as surrogate mothers for Rwanda's rare mountain gorillas. No mountain gorillas exist in captivity.
Scientists have experimented with in vitro fertilization in cats, baboons, and rhesus monkeys. Antelopes are the only other endangered species to have had a test-tube baby, she says.
|Printer friendly Cite/link Email Feedback|
|Title Annotation:||in vitro fertilization is being used to increase the genetic diversity of captive gorillas and other rare zoo animals|
|Article Type:||Brief Article|
|Date:||Aug 26, 1995|
|Previous Article:||Old world tree has roots in new.|
|Next Article:||Monkeying around with stem cells.|