把警告放在最先，後麵要以科學的態度去讀
How do porcupines make love?
by Wendy Cooper
Australian National University
Conclusions
Young children should be banned from the university library basements. Sometimes the most improbable science is also the truest. Never stand close to cage which contains courting porcupines.
Male courtship behaviour
When the male encountered the female porcupine he smelled her all over, then reared up on his hind legs, his penis fully erect. If the female was not ready she ran away. If she is prepared for mating she also reared up and faced the male, belly-to-belly. In this position most males then sprayed the female with a strong stream of urine (In one case, urine was measured on the lab floor 6 foot 7 inches from the point of discharge), soaking her from head to foot. (Johnnie, a young male, would charge the female from this position, trying to wrestle her to the ground and make sexual contact ventrally. He was never successful.)
She would
object vocally
strike with her front paws, as though boxing,
threaten or try to bite, or
shake off the urine and run away.
If ready for mating the female did not object strongly to this shower. This courtship routine may occur several times in the days or weeks leading up to copulation.
Mating
Mating occurs in November or December. While females at the peak of receptivity would accept any male, males required a period of close association with the females before they could mate with them. The male makes sexual contact from behind the female. The spines of both animals were relaxed and lay flat.
His thrusts are of the "usual nature" and were produced by flexing and straightening the knees. Males do not grasp the female in any way. Mating occurred until the male was exhausted. Each time he broke away from the female she would re-establish contact. One younger female made grunting whines throughout. If males refused to co-operate, the female approached a nearby male and acted out the male role in coition with the uninvolved male. Females only remained sexually receptive for a few hours and then rejected males.
How do porcupines make love?
by Wendy Cooper
Australian National University
Conclusions
Young children should be banned from the university library basements. Sometimes the most improbable science is also the truest. Never stand close to cage which contains courting porcupines.
Male courtship behaviour
When the male encountered the female porcupine he smelled her all over, then reared up on his hind legs, his penis fully erect. If the female was not ready she ran away. If she is prepared for mating she also reared up and faced the male, belly-to-belly. In this position most males then sprayed the female with a strong stream of urine (In one case, urine was measured on the lab floor 6 foot 7 inches from the point of discharge), soaking her from head to foot. (Johnnie, a young male, would charge the female from this position, trying to wrestle her to the ground and make sexual contact ventrally. He was never successful.)
She would
object vocally
strike with her front paws, as though boxing,
threaten or try to bite, or
shake off the urine and run away.
If ready for mating the female did not object strongly to this shower. This courtship routine may occur several times in the days or weeks leading up to copulation.
Mating
Mating occurs in November or December. While females at the peak of receptivity would accept any male, males required a period of close association with the females before they could mate with them. The male makes sexual contact from behind the female. The spines of both animals were relaxed and lay flat.
His thrusts are of the "usual nature" and were produced by flexing and straightening the knees. Males do not grasp the female in any way. Mating occurred until the male was exhausted. Each time he broke away from the female she would re-establish contact. One younger female made grunting whines throughout. If males refused to co-operate, the female approached a nearby male and acted out the male role in coition with the uninvolved male. Females only remained sexually receptive for a few hours and then rejected males.
選擇“Disable on www.wenxuecity.com”
選擇“don't run on pages on this domain”
