The Southern Gastric-Brooding Frog
نویسنده
چکیده
The Southern Gastric-Brooding Frog (Rheobatrachus silus [6]) was an aquatic frog [7] that lived in south-east Australia. In 2002, the International Union for Conservation of Nature Red List declared the frog [7] extinct, although no wild specimens had been reported since 1981. As the common name alludes to, the R. silus was a gastric-brooder, meaning that the female's eggs developed inside of her stomach. Weeks after ingestion, juvenile frogs escape through the mother's mouth. Because no other observed species performs this reproductive behavior, in the early twenty-first century R. silus became a target of the de-extinction movement that aims to resurrect extinct species. Researchers studied this frog [7]'s reproductive behavior and how the eggs and embryos escape digestion. Some scientists claimed that resurrecting this frog [7] could result in future medical applications related to digestion and to reprogramming organ function, as during pregnancy [8], R. silus's stomach physiologically functioned as a uterus [9].
منابع مشابه
Inhibition of gastric acid secretion in the gastric brooding frog, Rheobatrachus silus.
The female gastric brooding frog Rheobatrachus silus broods its young in its stomach. A substance that inhibits gastric acid secretion in a toad stomach preparation in vitro appears to be secreted by the developing young. This substance has been identified as prostaglandin E2. Rheobatrachus silus may thus have developed a mechanism whereby prostaglandin secreted by the larvae inhibits acid secr...
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