However, male golden-cheeked warblers are frequently observed guarding their mate during construction of nests and egg-laying, but, once incubation begins, the males are observed in the territories of other pairs closely following and attempting to copulate
with another female as she constructs a nest (R.
Caption: Bedbugs love to copulate
. The smaller male pierces the female with his sex organ.
agamemnon, we constantly observed satellite males trying to copulate
with females as well as the swapping of guarding males and satellite males.
rosaceana (Harris, 1841), the percentage of fertile eggs is reduced when females copulate
with non-virgin males, as a result of a linear decrease in the amount of sperm and other released by the male accessory glands.
For example, the male-female body length difference that results in a 95% probability that the pair will copulate
successfully is -2.21 mm (i.e., the male is 2.21 mm shorter than his mate).
The daily recordings were similar to the female choice experiments, and we analyzed whether females preferred to copulate
with either of the two males.
Frequencies followed by the same letter were significantly different (p<0.0001 [chi square] Test) Cross Female Blind Vestigal Normal Males Blind & Control Blind & Vestigal Mounts 0 18 0 3 Copulate
0 12 0 0 #copula/ # mounts -- 0.6 -- -- % copulate
0 a 57 a 0 0 N (pairs) 21 21 Cross Blind & Control Blind & Vestigal Mounts 0 39 0 6 Copulate
0 21 0 0 #copula/ # mounts - 0.53 - - % copulate
0 b 87.5 b 0 0 N (pairs) 24 24 Cross Blind & Control Blind & Vestigal Mounts 0 30 3 9 Copulate
0 21 3 3 #copula/ # mounts - 0.7 1.0 0.33 % copulate
0 c 100 c 14 14 N (pairs) 21 21 a1,a2,a3 P<0.00001 ACKNOWLEDGEMENTS
Deeply enmeshed in the history of slavery, the term is thought to originate in the late 19th-century French verb jaser or jazer - to copulate
. The word reached the African West Coast with the arrival of the French slave ships.
The male praying mantis cannot copulate
while its head is attached to its body.
For example, male Japanese quail demonstrate social proximity to female, but not male quail, if they are allowed to copulate
with female quail and receive noncopulatory exposures to males.
Precopulatory female choice is reasonably well established because females of many species appear to exert considerable influence over which males they copulate
with (reviewed in Andersson 1994).
This lower copulatory success for unpaired males might reflect female choice; indeed, we have observed females jet from males that attempt to copulate
in the field and laboratory.