Convenience polyandry or convenience polygyny? Costly sex under female control in a promiscuous primate

Convenience polyandry or convenience polygyny? Costly sex under female control in a promiscuous primate.

Classic sex roles depict females as choosy, but polyandry is widespread. Empirical attempts to understand the evolution of polyandry have often focused on its adaptive value to females, whereas 'convenience polyandry' might simply decrease the costs of sexual harassment. We tested whether constraint-free female strategies favour promiscuity over mating selectivity through an original experiment...

Male coercion and convenience polyandry in a calopterygid damselfly

Copulation in odonates requires female cooperation because females must raise their abdomen to allow intromission. Nevertheless in Calopteryx haemorrhoidalis haemorrhoidalis (Odonata) males commonly grasp ovipositing females and apparently force copulations. This has been interpreted as a consequence of extreme population density and male-male competition. We studied this behavior at two sites ...

Serial Monogamy as Polygyny or Polyandry?

Applications of sexual selection theory to humans lead us to expect that because of mammalian sex differences in obligate parental investment there will be gender differences in fitness variances, and males will benefit more than females from multiple mates. Recent theoretical work in behavioral ecology suggests reality is more complex. In this paper, focused on humans, predictions are derived ...

Wireless LANs – Convenience or Security

Wireless LANs have revolutionized the way in whic h people communicate and share information. The market for wireless applications and hardware is growing at a phenomenal rate. With wireless networks proliferating rapidly, security of these networks becomes a major concern. Networks using the IEEE 802.11b standard have been proven inherently insecure. Hence, there exists the need for a fool -pr...

Convenience Sampling