Neuroscience award for better teaching 2018

The Neuroscience teaching award for better teaching 2018 is now open for nominations. 

The Dept of Neuroscience bestows a pedagogical prize and award for distinguished and inspiring teaching within the Dept. of Neuroscience's undergraduate and postgraduate education. A prize of 10,000 Swedish crowns is awarded out at the Neuroscience Day every year. Click here to read more and nominate your nominee.

Recent theses

Ann Essner, Physioterapy, 16 February 2018, at 10 am
Marina Senek, Neurology, 20 April 2018, at 9 am
Sami Abu Hamdeh, Neurosurgery, 21 April 2018, at 9 am
Elisabeth Westerberg, Clinical Neurophysiology, 27 April 2018, at 9 am

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Our groups of researcher are continuously loooking for new collaborative partners, post-doctoral fellows, Ph.D. students and project students. We are able to offer a range of different projects that can be tailored to your interests. Read more about our groups of researchers and contact our group leaders.

Read more about our recruitment here.

 

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Publications

Read about the Dept. of Neuroscience latest publications

Eat, escape, love: the price of looking sexy

2016-09-28

In the animal kingdom colourful traits can be both a blessing and a curse. A new study from a group of researchers at Uppsala University has studied the conspicuous wing coloration of two species of damselflies. Their results imply that males, but not females, pay a high cost when using colour to communicate with other damselflies, both in terms of predation risk and visibility to prey.

Many animals, such as parrots, tropical fish or butterflies, are very colourful. Such colourful displays are favoured in sexual selection as they make the animal stand out, and colour may therefore enhance mating success. However, colour can also be costly, as it makes the animal more conspicuous to both predators and prey. Colourful traits are therefore subject to opposing selection pressures: positive sexual selection by conspecifics (increased mating success) and negative natural selection by predators (higher predation risk) and prey (lowered hunting success).

In the new paper the researchers studied the conspicuous wing coloration of two species of damselflies, which are predated by birds and prey on small flies. The conspicuous wing coloration is used in colour communication between the sexes and between different species of damselflies.

Using electrophysiology, they first determined the colour vision of the damselflies and found that they see well in UV as well as in the human visible range. Second, the researchers measured the wing coloration using spectrophotometry and confirmed that males are more colourful than females.

Third, they estimated the predation risk in natural populations by quantifying the predated wings from bird feeding stations, and found that more males than females were consumed. The researchers finally used the data together with previously known colour vision of the bird predator, and the fruit fly prey, to model how visible the wing coloration is in natural environments.

The researchers found that males are very conspicuous to bird predators, to other damselflies, and to prey, while females remain predominantly cryptic (i.e. hard to see against the background). This implies that males, but not females, pay a high cost when they use colour to communicate with other damselflies, both in terms of predation risk and visibility to prey.

‘One of our most surprising findings was that male damselflies are unable to discriminate the wing coloration of perching females. We hypothesize that females use this to reduce male harassment, which is very intense in damselflies. Our study demonstrates that by including several levels of interactions in predator-prey systems, we get a more complete understanding of the costs and benefits of being colourful,’ says David Outomuro, post doc at the Department of Ecology and Genetics, Uppsala University, and corresponding author of the study.

For more information, please contact: David Outomuro, E-mail: David.Outomuro@ebc.uu.se Tel: + 46 18-471 2756

David Outomuro, Linus Söderquist, Frank Johansson, Anders Ödeen, and Karin Nordström (2016) The price of looking sexy: visual ecology of a three level predator-prey system, Functional Ecology, 10.1111/1365-2435.12769

The paper is largely based on a master thesis by Linus Söderquist, now a doctoral student at the Department of Ecology and Genetics at Uppsala University.