Male-Male Sexual Behavior in the Parasitic WaspPsyttalia concolor

Male-Male Sexual Behavior in the Parasitic Wasp Psyttalia concolor

The role of male-male courtship in parasitic Hymenoptera is poorly known. A laboratory study was conducted to assess if Psyttalia concolor (Szépligeti) (Hymenoptera: Braconidae) male courtship can be affected by a previous experience in courting young conspecifics of both sexes. Two experiments were performed to evaluate the effect of experience in courting young wasps on both male courtship an...

Sexual behavior in male rodents.

The hormonal factors and neural circuitry that control copulation are similar across rodent species, although there are differences in specific behavior patterns. Both estradiol (E) and dihydrotestosterone (DHT) contribute to the activation of mating, although E is more important for copulation and DHT for genital reflexes. Hormonal activation of the medial preoptic area (MPOA) is most effectiv...

Sexual behavior in the male rat.

Sexual behavior of male pigs.

Two major characteristics of males that affect the likelihood of achieving copulation are the sexual motivation and mating competency of the male. The behavior of domestic animals, including their sexual behavior, is dependent upon a complex interaction between the organism's internal and external environment. In male pigs, as in other mammalian species, it is clear that testicular steroids are...

Frustration and sexual behavior in male rats.

Frustration is an emotional state produced by the surprising omission in quantity and/or quality of an appetitive reinforcer. The aversive properties of stressors, such as electric shocks, produce responses similar to those elicited by a state of frustration. In this set of three experiments, we assessed the effects of water immersion (WIM, in Experiment 1)--that is, a physical stressor--and fi...