Dissertation Tobias Kehl

170 Pages·2015·1.92 MB·English

Dissertation
Tobias Kehl

Old male mating advantage in Bicyclus anynana
butterflies - sexual conflict or cooperation?
I n a u g u r a l d i s s e r t a t i o n
zur
Erlangung des akademischen Grades eines
Doktors der Naturwissenschaften (Dr.rer.nat)
der
Mathematisch–Naturwissenschaftlichen Fakultät
der
Ernst–Moritz–Arndt–Universität Greifswald
vorgelegt von
Tobias Kehl
geboren am 16.02.1985
in Greifswald
Greifswald, 7. April 2015
Dekan: Prof. Dr. Klaus Fesser
1. Gutachter: Prof. Dr. Klaus Fischer
2. Gutachter: Prof. Dr. Christer Wiklund
Tag der Promotion: 21. Oktober 2015
Für Anni

Contents
1 Introduction 5
2 Synopsis 15
2.1 Pheromone blend does not explain old male mating advantage
in a butterfly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Old male paternity advantage in Bicyclus anynana . . . . . . . 17
2.3 Determinants of mating success . . . . . . . . . . . . . . . . . . 19
2.4 Old male sex: large ejaculate, many sperm, but few offspring . . 21
2.5 Male sex pheromones as honest signals? . . . . . . . . . . . . . . 24
3 References 29
4 Publication list 43
3.1 Pheromone blend does not explain old male mating advantage
in a butterfly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.2 Old-male paternity advantage is a function of accumulating
sperm and last-male precedence in a butterfly . . . . . . . . . . 57
3.3 Fat and sassy: factors underlying male mating success in a but-
terfly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
3.4 Old male sex: large ejaculate, many sperm, but few offspring . . 91
3.5 Male sex pheromones as honest signals? Sperm number and not
pheromone titre is key in young male butterfly mating success . 129
1

INTRODUCTION