Edible and seminal gifts that male arthropods transfer to their mates range from important
material donations to items that provide little direct benefit. Recent reviews and research …

Odonates (dragonflies) are well known for the ability of the males to displace sperm stored in
the female's sperm-storage organs during copulation. By this means, copulating males are …

Females of all species belonging to the family Drosophilidae have two kinds of sperm‐
storage organs: paired spherical spermathecae and a single elongate tubular seminal …

In this paper, I consider the criteria necessary to demonstrate the postcopulatory ability of
females to favor the sperm of one conspecific male over another, that is, sperm choice. In …

We propose and evaluate the hypothesis that parent-offspring conflict over the degree of
maternal investment has been one of the main selective factors in the evolution of vertebrate …

Male redback spiders twist their abdomens onto the fangs of their mates during copulation
and, if cannibalized (65% of matings), increase their paternity relative to males that are not …

Traditional models of sexual selection propose that partner choice increases both average
male and average female fitness in a population. Recent theoretical and empirical work …

Conflicts between the sexes over control of reproduction are thought to lead to a cost of
sexual selection through the evolution of male traits that manipulate female reproductive …

Page 1 DEVELOPMENTS RIMATOLOGY: PROGRESS AN ROSPECI‘S Series Editor. Ruse H.
Tuule, Univelsity of Chicago, icago, IL BEHAVIORAL FLEXIBILITY IN PRIMATES Causes and …

Sexual cannibalism, where a female kills and consumes a courting male, represents an
extreme form of sexual conflict and has been proposed as a mechanism of mate choice. We …