The estrus cycle is 27 29 days long; females will develop a pouch prior to carrying young . while the bare-tailed woolly opossum can have up to seven young.
12.
In contrast to that is the Lee-Boot effect : when female mice are housed together they " suppress " each other's estrus cycles, and their pheromones delay puberty in young females.
13.
The estrus cycle seems to be about 16 days, based on observations of 14 cycles of a tame, free-ranging female which lived at the Estaci�n Biol�gica Capar?( Vaup�s, Colombia ).
14.
For breeding livestock, there are a number of advantages to be gained by finding methods to induce ovulation on a planned schedule, and thus synchronize the estrus cycle between many female animals.
15.
However, when grouped female mice are exposed to the pheromones contained in a male s urine, the Whitten effect occurs, and the majority of the female mice will enter a new estrus cycle by the third day of exposure.
16.
A female mule that has estrus cycles and thus, in theory, could carry a fetus, is called a " molly " or " Molly mule, " though the term is sometimes used to refer to female mules in general.
17.
In captive Sunda slow lorises, mating primarily occurs between June and mid-September, with the estrus cycle lasting 29 to 45 days and estrus lasting one to five days . Likewise, gestation lasts 185 to 197 days, and the young weigh between at birth.
18.
This is a phenomenon observed by Wesley K . Whitten ( 1956, 1966, 1968 ), whereby male mouse pheromone-laden urine synchronizes the estrus cycle " among unisexually grouped females, " and is an example of male-to-female pheromonal effects in mice, similar to the Bruce effect.
19.
According to Ryan, they did not argue that human sexuality was the same as bonobo sexuality; but rather that coitus was more frequent than is generally acknowledged, and that a typical human being would have had multiple partners within relatively short periods of time ( i . e . each estrus cycle of a female ).
20.
I . e . If I am a psychologist and I am involved in research on " The Effects of Electroconvulsive Shock Therapy on the Estrus Cycle of Rats " will it automatically be a conflict of interest for me to author an article on that subject or say, The Effects of Electroconvulsive Shock Therapy, or the Effects of Electroconvulsive Shock On Female Reproduction?
