Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Berlin scientists discover new frog family in West Africa

04.02.2014
In Africa morphologically very similar frogs live along fast flowing rainforest rivers and at waterfalls, the Torrent Frogs.

While studying the phylogeny of these frogs, scientists from the Berlin Natural History Museum and their colleagues from Switzerland came across a scientific sensation.


Odontobatrachus natator: one species of the new frog family
Photo: Mark-Oliver Rödel


Scan of the skull: the unusual teeth are one unique anatomic character of the new frog family
Scan: Michael F. Barej

The West African species apparently were not closer related to the other African species. In fact they represent a family already separated from other frog groups since the Cretaceous, the time when dinosaurs dominated life on Earth.

Many new frog species are still discovered and scientifically described each year, in particular from the tropics. Usually not much is known about the biology and phylogeny of these species.

However, the distribution and relatedness of species may deliver important insights to scientist concerning the history of our planet, such as e.g. climate change and the evolution of particular ecosystems. Therefore scientists from the Berlin Museum of Natural History, with their colleagues from Switzerland, aimed at uncovering the phylogeny of African torrent frogs.

These morphologically very similar frogs are specialized on rapidly flowing rainforest streams and waterfalls in West, Central and East Africa. The researchers applied genetic and anatomic methods in their study and were thrilled when they discovered that the West African species apparently were not at all related to the species from the other areas.

Whereas the discovery of new frog species is not unusual, even the identification of a new genus is already very rare. Thus Michael Barej, the first author of the study, stated, that to him it was like “hitting the jackpot. I needed to cool down when we discovered that we might have discovered a new frog family. It felt simply too unreal.”

However, the scientists could indeed show that the West African torrent frogs split from other frogs already in the Cretaceous, the time of dinosaurs. Apart from genetic differences and with the aid of computer tomography Michael Barej and his colleagues also discovered various unique anatomic characters.

Consequently they erected a new frog family, the Odontobatrachidae, for these West African frogs, just published in the scientific journal Frontiers in Zoology. The scientific name of the new family stems from the Greek words for tooth and frog, and is based on an anatomic uniqueness.

The frogs of the new family are characterized by long and bent teeth in the upper jaw and massive fangs in the lower jaw, a very unusual setting for frogs. It is not yet clear what these teeth are used for. Maybe the frogs feed on other frogs, as it might be indicated by the discovery of a small frog skeleton in the stomach of one of the larger individuals.

The discovery of this new frog family is also of importance to the conservation of tropical biodiversity. The “tooth frogs” only occur in small forest remnants in the West African countries of Guinea, Sierra Leone, Liberia and Ivory Coast. Mark-Oliver Rödel from the Berlin Museum of Natural History emphasizes that this discovery further underlines the uniqueness of the West African biodiversity hotspot and he hopes that the new family may be helpful in future efforts to protect these forests, not only for frogs.

The publication „Barej, M.F., A. Schmitz, R. Günther, S.P. Loader, K. Mahlow & M.-O. Rödel (2014): The first endemic West African vertebrate family – a new anuran family highlighting the uniqueness of the Upper Guinean biodiversity hotspot. – Frontiers in Zoology 11:8 doi:10.1186/1742-9994-11-8” is freely accessible at http://www.frontiersinzoology.com/content/pdf/1742-9994-11-8.pdf

Dr. Gesine Steiner | idw
Further information:
http://www.naturkundemuseum-berlin.de/en

More articles from Life Sciences:

nachricht UNH researchers create a more effective hydrogel for healing wounds
21.11.2018 | University of New Hampshire

nachricht Removing toxic mercury from contaminated water
21.11.2018 | Chalmers University of Technology

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First diode for magnetic fields

Innsbruck quantum physicists have constructed a diode for magnetic fields and then tested it in the laboratory. The device, developed by the research groups led by the theorist Oriol Romero-Isart and the experimental physicist Gerhard Kirchmair, could open up a number of new applications.

Electric diodes are essential electronic components that conduct electricity in one direction but prevent conduction in the opposite one. They are found at the...

Im Focus: Nonstop Tranport of Cargo in Nanomachines

Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.

Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Optical Coherence Tomography: German-Japanese Research Alliance hosted Medical Imaging Conference

19.11.2018 | Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

 
Latest News

Removing toxic mercury from contaminated water

21.11.2018 | Life Sciences

New China and US studies back use of pulse oximeters for assessing blood pressure

21.11.2018 | Medical Engineering

Exoplanet stepping stones

21.11.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>