Search results
Results from the WOW.Com Content Network
The pelvic spurs are usually held in the "erect" position and used by the male (at least) to stimulate the female. During mating, the male has a tendency to dig his pelvic spurs into the female's body. Whilst crawling over the female the male's spurs will scratch the surface of the female snake often making a distinct scratching sound.
Pelvic spurs (also known as vestigial legs) are external protrusions found around the cloaca in certain superfamilies of snakes belonging to the greater infraorder Alethinophidia. [1] These spurs are made up of the remnants of the femur bone, which is then covered by a corneal spur, or claw-like structure. [ 1 ]
Pelvic spurs, modified spine-like scales, are found in addition to the hind-limb ‘flaps’ on males, are thought to assist the male in gripping the female. [4]
Males will follow the female while flicking their tongue repeatedly. [3] Pelvic spurs, modified spine-like scales and hind-limb ‘flaps’ on males are thought to assist the male in gripping the female. [7] [3]
Other examples of sexual dimorphism in the species include males generally having longer tails to contain the hemipenes and also longer pelvic spurs, which are used to grip and stimulate the female during copulation. [23] Pelvic spurs are the only external sign of the rudimentary hind legs and pelvis and are seen in all boas and pythons.
Between 2012 and 2019, cervical cancer incidence among women ages 20 to 24 dropped by 65%, an American Cancer Society report found. In addition, fewer teens and young adults get genital warts as a ...
Male members of this subspecies on average weigh 4.06 kg (8.95 lb). Female members are much heavier, weighing at an average of 6.13 kg (13.5 lb). [2] Male Argentine boas generally have longer tails in order to contain the hemipenes as well as having longer pelvic spurs that the male uses to grip onto the female and stimulate during copulation.
Copulation is performed through cloacal kiss, in which the male and female press their cloacas together as the male discharges sperm. Unlike Cnemidophorus males, Aspidoscelis costatus males do not have anal spurs, or pelvic spurs, which are vestigal limbs used by males to stimulate and position females during mating.