• Publications
  • Influence
The evolution of male traits in social insects.
Pair formation in social insects mostly happens early in adult life and away from the social colony context, which precludes promiscuity in the usual sense. Termite males have continuous spermExpand
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Sexual selection in Apis bees
Le comportement reproducteur des abeilles melliferes (Apis spp.) ressemble beaucoup a celui des autres insectes sociaux, bien qu'une serie de caracteristiques specifiques, que l'on ne retrouve queExpand
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Sperm storage induces an immunity cost in ants
Ant queens are among the most long-lived insects known. They mate early in adult life and maintain millions of viable sperm in their sperm storage organ until they die many years later. Because theyExpand
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Bumblebees as model organisms to study male sexual selection in social insects
  • B. Baer
  • Biology
  • Behavioral Ecology and Sociobiology
  • 16 August 2003
Social-insect males are often regarded as being merely short-lived "flying sperm containers", which ignores their potential influence on females and paternity patterns as found in other animals.Expand
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Sperm transfer and male competition in a bumblebee
We investigated the dynamics of sperm transfer and the potential conflict between sexes over mating opportunities in the bumblebee, Bombus terrestris L. We recorded copulation duration in flightExpand
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Insights into female sperm storage from the spermathecal fluid proteome of the honeybee Apis mellifera
BackgroundFemale animals are often able to store sperm inside their body - in some species even for several decades. The molecular basis of how females keep non-own cells alive is largely unknown,Expand
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Sperm length, sperm storage and mating system characteristics in bumblebees
Summary: Multiple insemination induces sperm competition and may select for longer, faster moving sperm in species where sperm is short-lived and egg fertilization takes place almost immediatelyExpand
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The seminal fluid proteome of the honeybee Apis mellifera
Ejaculates contain sperm but also seminal fluid, which is increasingly recognized to be of central importance for reproductive success. However, a detailed biochemical composition and physiologicalExpand
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Experimental variation in polyandry affects parasite loads and fitness in a bumble-bee
In many species of animals, females typically mate with more than one male (polyandry). Some social insects carry this behaviour to extremes. For example, honeybee queens mate with ten to twenty (orExpand
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When every sperm counts: factors affecting male fertility in the honeybee Apis mellifera
Eusocial hymenopteran males have exceptionally high levels of ejaculate quality, which are assumed to result from extreme selection pressures for pre- and postcopulatory male–male competition and theExpand
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