Freiburg ecologists discover a new species of wasp that protects its offspring with dead ants
A German-Chinese research team has discovered a wasp with a unique nest-building strategy in the forests of southeast China:
The “bone-house wasp” shuts off its nest with a chamber full of dead ants in order to protect its offspring from enemies, as shown by Michael Staab and Prof. Dr. Alexandra-Maria Klein from the Institute of Earth and Environmental Sciences of the University of Freiburg as well as scientists from the Museum für Naturkunde Berlin and the Chinese Academy of Sciences in Beijing.
No other such strategy has ever been discovered before in the entire animal kingdom. “When I first saw one of these ant-filled chambers, I thought immediately of the ancient Great Wall of China. Just like the Great Wall protected the Chinese Empire against attacks from raiding nomad tribes, the ant wall protects the offspring of this newly described wasp species from enemies,” recounts Staab. The scientists published their findings in the international journal PLOS ONE.
The new species with the scientific name Deuteragenia ossarium belongs to the family of spider wasps. In most species of this family, each of the females builds her own nest consisting of several cells. Each cell is filled with a single spider that has previously been paralyzed by a sting and on which the larva feeds.
The same is also true of the newly discovered “bone-house wasp,” which in contrast to all other known spider wasp species does not leave the last cell empty but fills it with dead ants.
The scientists conducted experiments demonstrating that the ant wall is a very effective means of protecting the nest. The offspring of the “bone-house wasp” are attacked far less frequently than those of other wasps from the same ecosystem. The researchers assume that the unique ant wall gives the nest a smell similar to the nest of a well-fortified ant species, thus scaring off potential enemies.
The precise defense mechanism is still unclear and is the subject of current research. “The discovery of a new species raises new questions. We want to understand why biodiversity is important for a functioning ecosystem,” says Klein. The research group “Biodiversity-Ecosystem Functioning (BEF) China,” which conducted the research, is funded by the German Research Foundation.
More information on the DFG research group “BEF China”:
Melanie Hübner | University of Freiburg
Research team creates new possibilities for medicine and materials sciences
22.01.2018 | Humboldt-Universität zu Berlin
Saarland University bioinformaticians compute gene sequences inherited from each parent
22.01.2018 | Universität des Saarlandes
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...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
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...
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...
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...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
22.01.2018 | Materials Sciences
22.01.2018 | Earth Sciences
22.01.2018 | Life Sciences