In Antigua, Barbados, Barbuda, the Cayman Islands, Dominica, the Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Puerto Rico, Saint Lucia, and Saint Vincent. During the months of January, February, March, April, May, July, December. Also noted during this two-part list are birds in the Bahamas and Cuba.
Prolactin is secreted from the pituitary gland in response to eating, mating, estrogen treatment, ovulation, and nursing. Prolactin is secreted in a pulsatile fashion in between these events.Prolactin also plays an essential role in metabolism, regulation of the immune system, and pancreatic development.rolactin provides the body with sexual gratification after sexual acts: The hormone counteracts the effect of dopamine, which is responsible for sexual arousal. This is thought to cause the sexual refractory period. The amount of prolactin can be an indicator for the amount of sexual satisfaction and relaxation.
During pregnancy prolactin levels increase. After the birth of a baby, a womanâs estrogen and progesterone levels drop and prolactin levels rise. These high levels of prolactin cause milk to âcome inâ or milk production to begin so a baby can be breast fed. In women who are not pregnant, prolactin is one of the hormones that regulate menstrual cycles. In males high levels of prolactin may be related to sperm production and sexual dysfunction.