Males of many species are more susceptible than females to infections caused by parasites,
fungi, bacteria, and viruses. One proximate cause of sex differences in infection is …

The immunocompetence handicap hypothesis was formulated 12 years ago in an attempt to
offer a proximate mechanism by which female choice of males could be explained by …

Parasites and infectious diseases are everywhere and represent some of the most potent
forces shaping the natural world. They affect almost every aspect imaginable in the life of …

Long‐distance migration has evolved in many organisms moving through different media
and using various modes of locomotion and transport. Migration continues to evolve or …

A fragment of the mitochondrial cytochrome b gene of avian malaria (genera Haemoproteus
and Plasmodium) was amplified from blood samples of 12 species of passerine birds from …

2.1 Background Exhaustive empirical surveys have shown that, almost without exception,
macroparasites (parasitic helminths and arthropods) are aggregated across their host …

The importance of wild birds as potential vectors of disease has received recent renewed
empirical interest, especially regarding human health. Understanding the spread of bacterial …

We studied the phylogeny of avian haemosporidian parasites, Haemoproteus and
Plasmodium, in a number of African resident and European migratory songbird species …

Recent advances in human life history theory have provided new insights into the potential
selection pressures that were instrumental in the evolution of human and non‐human …

Unlike most other large mammals, the Soay sheep population of Hirta in the St. Kilda
archipelago show persistent oscillations, sometimes increasing or declining by more than …