The Southern Gastric-Brooding Frog

نویسنده

  • Michael Archer
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].

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

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...

متن کامل

Reproduction in Three Species of Intertidal Barnacles from Central California

The reproductive biology of eastern Atlantic barnacles has been studied extensively, with emphasis on the role of temperature in regulating reproduction (e.g., Crisp, 1950, 1954; Patel and Crisp, 1960a; Barnes, 1963; Barnes and Stone, 1973). However, there has been much less work on cirripedes elsewhere in the world. This paper compares the reproductive cycles and brood production of three spec...

متن کامل

Evaluating connectivity in the brooding brittle star Astrotoma agassizii across the drake passage in the Southern Ocean.

Studies examining population structure and genetic diversity of benthic marine invertebrates in the Southern Ocean have emerged in recent years. However, many taxonomic groups remain largely unstudied, echinoderms being one conspicuous example. The brittle star Astrotoma agassizii is distributed widely throughout Antarctica and southern South America. This species is a brooding echinoderm and t...

متن کامل

Effects of El Niño-driven changes in wind patterns on North Pacific albatrosses.

Changes to patterns of wind and ocean currents are tightly linked to climate change and have important implications for cost of travel and energy budgets in marine vertebrates. We evaluated how El Niño-Southern Oscillation (ENSO)-driven wind patterns affected breeding Laysan and black-footed albatross across a decade of study. Owing to latitudinal variation in wind patterns, wind speed differed...

متن کامل

MOUTH BROODING FISH ALGORITHM FOR COST OPTIMIZATION OF REINFORCED CONCRETE ONE-WAY RIBBED SLABS

In this paper, the optimum design of a reinforced concrete one-way ribbed slab, is presented via recently developed metaheuristic algorithm, namely, the Mouth Brooding Fish (MBF). Meta-heuristics based on evolutionary computation and swarm intelligence are outstanding examples of nature-inspired solution techniques. The MBF algorithm simulates the symbiotic interaction strategies adopted by org...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2018