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Scientists resurrect extinct frog that gives birth through its mouth

Scientists have resurrected an extinct frog species, that gives birth through its mouth, by tran...

Scientists have resurrected an extinct frog species


Scientists have resurrected an extinct frog species, that gives birth through its mouth, by transplanting its DNA into the eggs of another frog species.

The team implant cells of extinct amphibian, collected in the 1970s and kept in deep freezer for 40 years, into the eggs of living relative team implanted cell nuclei from tissues into donor eggs from a distantly-related frog.

The extinct frog is the Rheobatrachus silus, one of two species of gastric-brooding frogs, native to Queensland in eastern Australia.

Both species became extinct in the mid-1980s.

frog

The gastric-brooding frogs or Platypus frogs (Rheobatrachus) were a genus of ground-dwelling frogs native to Queensland in eastern Australia. The genus consisted of only two species, both of which became extinct in the mid-1980s. The genus was unique because it contained the only two known frog species that incubated the prejuvenile stages of their offspring in the stomach of the mother.

The combined ranges of the gastric-brooding frogs comprised less than 2,000 square kilometres (770 sq mi). Both species were associated with creek systems in rainforests at elevations of between 350 metres (1,150 ft) and 1,400 metres (4,600 ft). The causes of the gastric-brooding frogs’ extinction are not clearly understood, but habitat loss and degradation, pollution, and some diseases may have contributed.

SOURCE


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