University of Groningen Coevolution in host–parasite systems Ashghali Farahani, Sajad

University of Groningen

Coevolution in host–parasite systems

Ashghali Farahani, Sajad

DOI:

10.33612/diss.128654818

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Publication date:

2020

Link to publication in University of Groningen/UMCG research database

Citation for published version (APA):

Ashghali Farahani, S. (2020). Coevolution in host–parasite systems: Behavioral strategies of native and

invasive hosts. University of Groningen. https://doi.org/10.33612/diss.128654818

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1

Coevolution in host–parasite

systems

Behavioural strategies of native and invasive hosts

PhD thesis

to obtain the degree of PhD at the

University of Groningen

on the authority of the

Rector Magnificus Prof. C. Wijmenga

and in accordance with

the decision by the College of Deans.

This thesis will be defended in public on

Friday 10 July 2020 at 14:30 hours

by

Sajad Ashghali Farahani

born on 30 June 1979

2

Supervisors

Prof. J. Komdeur

Prof. J. Palsbøll

Assessment Committee

Prof. B. Helm

Prof. M. Naguib

Prof. F. Cezilly

3

CONTENTS

Chapter 1

General introduction: invasion and parasitism 4

Box 1 Effects of parasites on the behaviour of native and 20

invasive intermediate hosts

Chapter 2

The effects of parasites upon non-host predator avoidance behaviour in ..24

native and invasive gammarids.

Chapter 3

The acanthocephalan parasite Polymorphus minutus increases 37

the positive rheotaxis behavior of its gammarid hosts.

Box 2 Effects of salinity and parasites on physiological changes 46

of native and invasive intermediate-hosts

Chapter 4

Experimental evidence of parasitic infection increasing salinity 59

tolerance of the native gammarid hosts

Chapter 5

General discussion and synthesis 62