Reproductive Behavior Flashcards
What are the 3 Reproductive behaviors stages in males?
- Precopulatory stage
- Copulatory stage
- Postcopulatory stage
What are the 3 Reproductive behaviors in females?
- Attractivity Stage
- Proceptivity Stage
- Receptivity Stage
What are the events that occur in the precopulatory stage?
- Search for a sexual partner
- Courtship
- Sexual arousal
- Erection
- Penile protrusion
What events are in the copulatory stage?
- Mounting
- Intromission ( Penis introduced to vagina)
- Emission (seminal fluid & sperm movement into pelvic urethral)
- Ejaculation (expulsion of semen into female tract)
What events are in the Postcopulatory stage?
- Dismount
- Refractory Period
- Memory
For the event of searching for a sexual partner what does the male do?
Male looks for female signals like olfactory, visual, auditory, and tactile responses
What are courtship behaviors?
- Sniffing vulva
- Phonation (females urinates in presence of male)
- Flehmen response (lip curl)
What is sexual arousal?
- Erection
- Penile protrusion (CNS control)
What is mounting? What is emission?
- Female shows lordosis (stands to be mounted )
- Seminal fluid & sperm movement into pelvic urethral
What is Intromission? What is ejaculation?
- Entrance of penis into vagina
- Expulsion of semen into female tract.
What is the postcopulatory?
The refractory period, no further copulation (sec to min), memory
What occurs in the attractivity phase?
- behaviors that attract males
- postures, vocalization, pheromones
What occurs in the attractivity phase?
- behaviors that attract males
- postures, vocalization, pheromones
- Increased physical activity (searching for mate)
What is proceptivity?
- female behaviors that encourages male to copulate
- Posturing with male, homosexual behavior.
What is Receptivity?
- Copulatory behavior of female
- Limited duration in female, considerable species variation
How is CNS initiated?
It is initiated by sensory signals like olfaction, vision, audition, tactility
How can one be able to respond to sensory signals?
The hypothalamus must be sensitized.
How does CNS work in males?
Testosterone is aromatized to estrogen in brain, promotes reproductive behavior
What is the effect of a constant hormone supply?
It initiates reproductive behavior at any time
In females when is there an excess estrogen supply?
Excessive estrogen only prior to estrus (receptiveness)
In what order does the Central nervous system control (CNS) behavior go through?
- Sensory
- Hypothalamus
- Midbrain
- Medulla
- Spinal cord
What are the aspects of the sensory aspect in CNS?
- Visual senses
- Olfactory (detection of pheromones in urine)
- Auditory
- Tactile (Physical touch aspect)
What does the hypothalamus contain in regards to the CNS?
- Estrogen receptors
- Estradiol increases -> increases nerve excitability
- Neurons produce behavior specific peptides
In the Midbrain what is its role in the CNS?
- “Receiving zone” for hypothalamic peptides
- Speeds up impulses