PhD Studentship: Genomics of Mimicry in Neotropical Catfishes

Primary supervisor - Dr Martin Taylor 

Scientific background the wider context; why the project is important and timely 

Mimetic relationships - where two or more species share colour patterns to reduce attacks by predators are some of the most powerful demonstrations of natural selection. The best-known examples can be found in Heliconius butterflies, millipedes and poison arrow frogs. A less well-known, but nevertheless fascinating system can be found in Neotropical catfishes of the sub-family Corydoradinae, where multiple differently coloured communities of mimics can be found coexisting across South America. Using whole genome resequencing, this project will investigate the genetic basis of colour patterns involved in mimicry and search for signatures of selection both within and among mimicry rings to gain a better understanding of how mimicry has evolved.  

Research methodology what precisely will the student do? Where? How? 

The project will use existing chromosome level whole genome sequences with additional whole genome resequencing of Corydoradinae species involved in different mimicry rings, coupled with cutting edge bioinformatic analyses (e.g. detecting positive selection and selective sweeps) to identify genes and genomic regions associated with colour pattern mimicry.  

Training what opportunities will the student have? What skills will they gain 

The applicant will receive training in molecular laboratory techniques such as DNA extraction, polymerase chain reaction, Next generation sequencing, bioinformatic methods for comparative genome analysis and detection of selection within and among species and functional genome analysis. There will also be training in advanced statistical methods and plotting in R and python. There is the potential for conducting fieldwork in South America, but this is not essential for the project. 

Person specification  

The applicant should have a degree in biology, genetics or similar and strong background/interest in genetics and or evolutionary biology. An aptitude for bioinformatic analyses and experience with a scripting language would be an advantage although not essential. 

For further information, please visit www.aries-dtp.ac.k

Funding Details

Additional Funding Information

ARIES is awaiting confirmation of funding under the BBSRC-NERC DLA award scheme, which is expected shortly. Funding for this studentship is subject to this confirmation and UKRI terms and conditions. Successful candidates who meet UKRI’s eligibility criteria will be awarded a fully-funded ARIES studentship of fees, maintenance stipend (£19,237 p.a. for 2024/25) and research costs.

A limited number of ARIES studentships are available to International applicants. Please note however that ARIES funding does not cover additional costs associated with relocation to, and living in, the UK.

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