Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Ants rescue their injured

13.04.2017

Ants operate a unique rescue system: When an insect is injured during a fight, it calls for help. Its mates will then carry it back to the nest for recovery.

The African Matabele ants (Megaponera analis) are widespread south of the Sahara and are a specialised termite predator. Two to four times a day, the ants set out to hunt prey. Proceeding in long files, they raid termites at their foraging sites, killing many workers and hauling the prey back to their nest.


A Matabele ant carries an injured mate back to the nest after a raid.

(Photo: Erik Frank)


Matabele ants returning from a successful raid. The big ant carries two termite soldiers of Macrotermes sp. in its mouth as prey.

(Photo: Erik Frank)

These attacks, however, are met with resistance and the ants get involved in fights with termites of the soldier caste. Injury and mortality can occur during such combats, as the soldiers are very adept at using their powerful jaws to fend off the attackers.

So the invasions bear an increased risk of injury. For this reason, the ants have developed a rescue behaviour hitherto unknown in insects.

Chemical signal triggers rescue

When an ant is injured in a fight, it will "call" its mates for help by excreting chemical substances. The injured insect is then carried back to the nest where it can recover after receiving treatment. What is the "therapy" like? Usually, treatment involves removing the termites still clinging to the ant.

A german research team of the University of Würzburg's Biocentre has discovered this rescue behaviour of Megaponera analis and describes it in the journal "Science Advances". Erik Frank, Thomas Schmitt, Thomas Hovestadt, Oliver Mitesser, Jonas Stiegler, and Karl Eduard Linsenmair, all from the Chair of Animal Ecology and Tropical Biology, have participated in the research.

Rescuing the injured pays off

"We have observed helping behaviour vis-à-vis injured animals for the first time in invertebrates," says Ph.D. student Erik Frank. This was an unexpected finding, especially for social insects, where individuals are usually of little value. But obviously, it pays off for the colony as a whole to invest in the rescue service as the researchers demonstrate in their publication.

Saving the injured: Rescue behaviour in the termite hunting ant Megaponera analis, Erik T. Frank, Thomas Schmitt, Thomas Hovestadt, Oliver Mitesser, Jonas Stiegler, Karl Eduard Linsenmair, Science Advances, 12. April 2017

Contact

Erik Frank, Biocentre of the Julius-Maximilians-Universität Würzburg (JMU), erik.frank@uni-wuerzburg.de

Information for journalists: Erik Frank will be working at the Ecological Research Station of the University of Würzburg in the Comoé National Park in the Republic of Côte d’Ivoire until July 2017. You can reach him there under the telephone number 0033 970 735 206, via e-mail to erik.frank@uni-wuerzburg.de and via Skype using the name erik_frank

Robert Emmerich | Julius-Maximilians-Universität Würzburg
Further information:
http://www.uni-wuerzburg.de

More articles from Life Sciences:

nachricht More genes are active in high-performance maize
19.01.2018 | Rheinische Friedrich-Wilhelms-Universität Bonn

nachricht How plants see light
19.01.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Artificial agent designs quantum experiments

On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.

We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Let the good tubes roll

19.01.2018 | Materials Sciences

How cancer metastasis happens: Researchers reveal a key mechanism

19.01.2018 | Health and Medicine

Meteoritic stardust unlocks timing of supernova dust formation

19.01.2018 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>