Female Reproductive Behavior - Female Reproductive Cycles - Types of Reproductive Cycles
9 important questions on Female Reproductive Behavior - Female Reproductive Cycles - Types of Reproductive Cycles
What is the Whitten effect?
(1)Oestrus induction and synchronization, presence of the male/his odor induces oestus in group-housed mice and induces GnRH release.
(2)Suppression of oestrus, housed in large groups without males, oestrus susspended and exposure to female urine suppresses GnRH release and oestrus
What is the follicular phase and the luteal phase?
The follicular phase of an ovarian cycle occurs prior to ovulation, when the follcles are developing.
The luteal phase is the part of the cycle after ovulatio during which the corpora lutea are active and producing lots of text-decorationprogesteron.
What is the Bruce effect?
Pregnant females abort or resorb their fetusses if exposed to a male that was not their sire. Exposure to male urine induces GnRH release and oestrus -> incompatible with pregnancy
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What is pseudo pregnancy?
the occurence of any functional luteal phase in anon-pregnant cycle. It is caused by sterile mating or spontaneus). Hormonally the lutealphase is identical to pseudopregnancy. -> Progesterone
What is the menstrual cycle?
The cycle of most primates, each month there is a recurring period of sloughing off of the uterine endotorium = menstruation.
Which environmentel factors have effect on reproduction cycles?
Lack of nutrition, stress, lack of appropriate habitat, climatic factors. -> breeding season represents "temporal fit".
Why are humen cycles not estrous cycles?
Because maing behavior is not confined to a particular phase. So it is called the mnstrual cycle
What is post-partum oestrus?
The period of the first oestrus acfter partuirition. Mating in this period can result in pregnancy.
What is the Lee-Boot effect?
When female mice (or other rodents) are isolated from a male, longer oestrus cycles occur due to lengthening of diestrus stage
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