Cornell University entomologists have unlocked an evolutionary secret to how insects evolve into new species. The discovery has major implications for the control of insect populations through disruption of mating, suggesting that over time current eradication methods could become ineffective, similar to the way insects develop pesticide resistance.
The researchers, led by Wendell L. Roelofs, the Liberty Hyde Bailey Professor of Insect Biochemistry at Cornell, made the discovery while examining ways to keep European corn borers from mating, multiplying and then chewing up farmers fields. They discovered the existence of a previously undetected gene, the delta-14, that can regulate the attractant chemicals produced in sex-pheromone glands of female borers. The gene can be suddenly switched on, changing the pheromone components that females use to attract males for mating.
The entomologists have demonstrated that insects evolve chemical systems in leaps rather than in minute stages, as had been previously assumed. The researchers also discovered that there are rare males in the corn borer population -- about 1 in 200 -- capable of responding to chemicals produced by the delta-14 gene.
Blaine P. Friedlander, Jr. | Cornell University News Service
New findings help to better calculate the oceans’ contribution to climate regulation
14.11.2018 | Jacobs University Bremen gGmbH
How algae and carbon fibers could sustainably reduce the athmospheric carbon dioxide concentration
14.11.2018 | Technische Universität München
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...
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...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
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