Parasites have the potential to decrease reproductive output of hosts by competing for
nutrients or forcing hosts to invest in immune function. Conversely, reproductive output may …

Blood parasites of breeding American kestrels, Falco sparverius (40 males and 27 females),
were investigated to determine their connections to male showiness, mating success and …

The Hamilton-Zuk hypothesis (HZH) of sexual selection postulates that parasites could
induce heritable fitness differences that are a cue for female mate choice. The Resource …

Interest in hematozoan parasites has been considerable in recent years, mostly as a result
of Hamilton and Zuk's idea that parasites influence the expression of sexually selected traits …

We evaluated the relationship between blood parasites and body condition of American
Kestrels (Falco sparverius) during the breeding season. Females that were infected with at …

Reproduction is an energy-demanding activity in mammalian females, with increased
energy requirements during pregnancy and, especially, during lactation. To better …

A theoretical debate about whether parasitoids should be time or egg limited now
recognizes both as feasible, and interest has turned to determining the circumstances under …

Parasitoids display remarkable inter-and intraspecific variation in their reproductive and
associated traits. Adaptive explanations have been proposed for many of the between-trait …

The influence of parental effort on susceptibility to parasitism was investigated
experimentally in the Eurasian kestrel (Falco tinnunculus) in Finland. Parental effort was …

Parasitic wasps lay their eggs in or on other insects. Allocation of resources to reproduction
(eggs) and survival (life span) should maximize reproductive success, but stochasticity in the …