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The sexual union of two individuals, resulting in insemination or deposition of the male gametes in proximity to the female gametes.



(1) The union of two individuals in sexual intercourse.

(2) The process of the syngamy of two sex cells (gametes). Copulation is usually understood to mean the syngamy of sex cells that are externally almost or completely indistinguishable. If the male gamete differs sharply from the female, the process of their syngamy is called fertilization.

References in periodicals archive ?
As soon as the female lands close to the nests' entrance, she touches the male's antennae, so that he leaves the nest, mounts her and copulates.
This may indicate that extremely small males are selected against for reasons other than their ability to copulate (e.
Test females that copulated a second time after producing three successive egg sacs had a higher reproductive success in their fourth and fifth clutches than females that did not copulate again.
For subjects in the paired group, the block was lowered to the cage floor and after a 30-s interval, the door to the side cage was opened, and subjects were allowed to copulate with the model for 5 min.
After allowing female dungflies to copulate for a fixed time with two different males, Ward (1993) found that regardless of copulation order: (1) females stored more sperm from large than small males; (2) sperm from the two males were distributed nonrandomly across the female's three spermathecae; and (3) the larger male fertilized more eggs (see also Otronen et al.
In addition to these behavioral differences between males, individual males can copulate in both positions, even within the same day.
In the family of wolf spiders many species copulate for just a few minutes, while others copulate for hours.
In Branded, she observes that if mass media are convincing youth to do anything, it's not to kill or copulate but to shop.
Lenny'll probably be making mad manga man screeches, and the dame'll probably try and copulate with Parky.
I am the Mother and am the Father and I copulate with myself," says the gn ostic deity Protennoia in a treatise of that name.
Sometimes I, too, would like to copulate with myself.
We tested whether mite infestation affects the frequency at which individual flies copulate and we calculated the opportunity for PMSS in different host populations.