mating behaviour Flashcards
When is reproductive behaviour programmed?
PRENATAL DEVELOPMENT
When does sex differentiation occur?
during embryogenesis
Small amounts of estradiol in the brain result in …….
feminization
What prevents estradiol from entering the brain?
Alpha-fetoprotein
High concentration of estradiol in the brain results in
Defeminisation and masculinization
Which hormone is responsible for signs of sexual receptivity
Oestrogens
…….. injection restores sexual aggressiveness in castrated males
Testosterone or estradiol
Which senses initiate mating behavior
Olfaction(smell) , vision, audition, tactility(feel)
Which part of the animal controlls reproductive behavior
CNS
What is the primary purpose of mating behavior
Copulation
Name the 3 things that regulate mating behavior
Hormones, senses and environment
Name and describe the 3 phases of reproductive behavior in the female:
1) Attractivity: signals to attract males and includes posture, vocalization and pheromones.
2) Proceptivity: behavior that stimulates males to copulate.
3) Receptivity: Copulation behavior of females to ensure insemination.
Name the 3 stages of reproductive behavior in the male:
Precopulary stage, copulary stage and post copulatory stage.
Name the sequence that takes place during the precopulary stage of male reproductive behavior.
search for sexual partner courtship sexual arousal erection penile protrusion
What happens when the penis gets erect?
the arterial bloodflow increases dilation of the corporal sinusoids restricted venous outflow elevated intrapenile pressure relaxation of the retractor penile muscle
What sequence happens during the copulatory stage in male reproductive behavior
mounting
intromission
ejaculation
Name the major steps in ejaculation
1) intromission
2) sensory stimulation of the glans penis
3) sudden and powerful contraction of urethralis, bulbourethral and ischiocavernosus muscles
4) Expulsion of semen.
What is the sequence for the post copulatory behavior in males?
Dismount
refractory period
memory
Name 2 ways in which libido can be maintained
1) A balanced diet, no over or under feeding
2) Maintain good health
How can you enhance reproductive behaviour
1) introducing novel stimulus animals
2) changing stimulus settings
What is the refractory period before a second ejaculation called?
Post copulatory stage
What influences the length of time for refractory period( sexual exhaustion) ?
age, species, sexual rest before copulation
Why study mating behaviour
Propagation of species
