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New position open - Researcher in evolutionary genomics and marine chemical ecology

News: May 19, 2018

New position open:

Researcher in evolutionary genomics and marine chemical ecology

Apply by: 2018-05-31

Subject area description
Coelopa frigida is an important coastal invertebrate that inhabits “wrackbeds” (accumulations of decomposing seaweed). The scientific interest for this fly is that is has a chromosomal inversion on chromosome I (spanning 10% of the genome and containing at least 100 genes) that consists of an α and a β version. We are currently developing C. frigida as a model system for studying the evolution of chromosomal inversions. The inversion affects a wide range of phenotypic traits such as survival, mating success, development time, adult size and chemical signaling.

Eelgrass (Zostera marina) meadows are key habitats for coastal biodiversity and ecosystem functioning. During the last decades there has been a significant decline in eelgrass beds in Sweden and elsewhere, which has been attributed to human activities. Recurrent mass mortality of eelgrass due to wasting disease caused by a protist pathogen (Labyrinthula) has, however, been observed in different parts of the world throughout the 20th century. Recent findings from the chemical research group at Tjärnö show that eelgrass extracts from the Swedish west coast contain three chromatogram peaks that are inhibitory towards the parasite. The structure of the inhibitory compounds remains to be elucidated.

Job assignments
The candidate will be part of two research groups in marine evolutionary biology and chemical ecology active both at Tjärnö Marine Research Laboratory, outside Strömstad, and in Gothenburg.

The candidate is expected to contribute significantly to ongoing projects in the research group in a way that will make possible new insights and interpretations of the existing empirical data. Part of the position includes the work within a collaboration project on plastic and genetic differences of insect cuticular hydrocarbons in seaweed flies. Hereby, the candidate will be responsible for sample preparation, method set-up and running of the GC-MS based analysis, mass spectra based compound identification, as well as the chemometrical evaluation of the results using multivariate statistics.

The other part of the position includes the work on identifying unknown eelgrass metabolites that are inhibitory towards the parasite L. zostarae. This will be based on a bioassay-guided fractionation approach, where funnel (polarity) separation as well as preparatory and analytical HPLC in combination with bioassays will be important tools.

> More information about the position and how to apply...

 

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Page Manager: Eva Marie Rödström|Last update: 5/3/2013
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