Reproductive Behavior Stages 1. Precopulatory Stage 2. Copulatory Stage 3. Post Copulatory stage

Reproductive Behavior Chapter 11

1. Precopulatory Stage Search for sexual partner Courtship Sexual arousalErection Protrusion of the penis

1. Precopulatory Stage Search for sexual partner: Olfactory, visual, auditory Courtship: Flehmen behavior, urination, increased activities Sexual arousal: Lordosis (mating posture)

Flehmen behavior: Response to Pheromone Detecting unit in the bull, ram, and stallion: - Vomeronasal System Adapted from Senger, 2003 Pathway to Preg. & Parturition ©

Adapted from Senger, 2003 Pathway to Preg. & Parturition ©

Adapted from Senger, 2003 Pathway to Preg. & Parturition ©

2. Copulatory Stage Ejaculation Mounting intromission Duration varies among species

Adapted from Senger, 2003 Pathway to Preg. & Parturition ©

Adapted from Senger, 2003;Pathway to Preg. & Parturition ©

3. Post Copulatory Dismount Refractory Period Memory

Refractory Period Lack of secondary copulationLack of secondary copulation + or - stimuli can affect the subsequent mating+ or - stimuli can affect the subsequent mating Specific Post ovulatory behaviorSpecific Post ovulatory behavior –Vocal, grooming, licking, changing posture

Adapted from Senger, 2003 Pathway to Preg. & Parturition ©

Sexual Behavior Hormonally drivenHormonally driven –Testosterone promotes male behavior Example: androgenized femaleExample: androgenized female –P4 and E2 promote female behavior Restore female sexual behavior in ovariectomized femaleRestore female sexual behavior in ovariectomized female

Adapted from Senger, 2003; Pathway to Preg. & Parturition ©

Semen Collection Sexual PreparationSexual Preparation –False mounting –Restraining –Combination Reduction of postcopulatory behaviorReduction of postcopulatory behavior Coolidge EffectCoolidge Effect –Introduction of the new female

Adapted from Senger, 2003 Pathway to Preg. & Parturition ©