Mosquitoes in the genus Anopheles are best known as the vectors of malaria and E. culicivora is the first predator that has been found to single out Anopheles as prey. In a sated condition, E. culicivora´s preference held regardless of the sex or age of the spider. When fasted, larger spiders chose both mosquito choices (sympatric mosquitoes of different genera) in equal numbers, but the smaller E. culicivora maintained their preference for Anopheles.
Anopheles holds its body at a 45 degree angle relative to the substrate when resting, whereas other mosquitoes rest with their bodies parallel to the surface of the substrate. We investigated whether the characteristic resting posture of Anopheles was a cue E. culicivora uses to distinguish these mosquitoes from others. To do this we drew 3D virtual mosquitoes whose movement was based on frame-by-frame copying of digital video footage of grooming Anopheles. The use of virtual mosquitoes eliminated variables except the variable in question. We found the single most important visual cue used to distinguish Anopheles mosquitoes is its resting position. Finding a predator that chooses Anopheles as its preferred prey shows that we should not abandon efforts to search for avenues for the biological control of malaria.
Not of Divided Mind
19.01.2017 | Hertie-Institut für klinische Hirnforschung (HIH)
CRISPR meets single-cell sequencing in new screening method
19.01.2017 | CeMM Forschungszentrum für Molekulare Medizin der Österreichischen Akademie der Wissenschaften
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
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19.01.2017 | Physics and Astronomy