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More
or less all animals and plants use chemical signals to obtain information
regarding the environment and to communicate
with eachother. In the field of Chemical Ecology we investigate how these
chemical interactions occur and work. In our division we are mainly interested
in insects as experimental organisms.
Within
the division we work in three main areas, all dealing with chemical
signals:
1) Sexual communication by pheromones (a pheromone
is a chemical messenger between individuals within the species), 2) interactions
between insects and plants samt
3) the insect nervous system and how it allows insects to
respond behaviourally to different odors.
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Many
insects find eachother for mating by means of odors, i.e. pheromones.
It is usually the female who emits a scent that the male follows
to find her. We study how these systems work and use them to
manipulate and combat pest insects.
Project
information at:
http://www.biosignal.org/home/orchards/orchards.html
http://www.vsv.slu.se/peterw/witzgall.htm
http://www.vsv.slu.se/peterw/projects.htm
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Most
insects are dependent on plant material as food for their larvae,
and are thus often serious pests. To find a suitable plant for
egglaying insects often use specific odors emitted from the plant.
Odors from the ”wrong” plant can also have a deterrent
effect. Hoe insects behave and how they choose host plant is
a second research area where we are active. Also here we investigate
possibilities to manipulate the behavior of pest insects in addition
to the purely basic studies.
Project
information at:
http://www.biosignal.org/
http://www.vv.slu.se/fs/tatry_pr/tatrypr.htm
http://hem.fyristorg.com/fresch/pm/
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To
find the right way among pheromones, plant odors and many other
chemical cues, the insect nervous system must distinguish the
significance of the different signals. Often mixtures are involved,
raising even higher demands on the olfactory sense. How this
sense is built and functions, both at the peripheral level, the
antenna, and in the brain is our third main research direction.
Project
information at:
http://www.amoth.org
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