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Evolutionary ecology
Master degree

Eihab completes his Master degree

Eihab has been studying how shape and colour have changed in experimentally harvested guppy populations.

Master student pointing to a fish wireframe diagram
Eihab is explaining his results on guppy shape changes over time.
Photo:
Mikko Heino

Eihab succesfully defended his thesis "Fisheries-induced evolution in morphology: A selection experiment on the Trinidadian guppy (Poecilia reticulata)" on June 10, 2016. Eihab found that there have been significant changes in both shape and colouration over time, although most of these changes are parallel between the treatments, suggesting that adaptation to the experimental aquaria have been important. However, males subject to positively size-selective fishing have increased in orange colour, as predicted by the theory.

The external examiner was Dr. Bjørn Serigstad from the Institute of Marine Research. The thesis has been supervised by Beatriz Diaz Pauli and Mikko Heino from EvoFish.