| During copulation, the female transfers unfertilized eggs to the male's ventral surface, where fertilization takes place. |
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| Each male possesses two intromittent organs, one on either side of the body, only one of which is everted during a single copulation. |
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| Same-sex copulation and bonding are common in hundreds of species, from bonobo apes to gulls. |
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| Some religious tenets and social conventions ban copulation between unmarried couples or limit coitus to certain postures or positions. |
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| Also, males cannot force females to copulate as copulation is only possible when the female assumes a horizontal body posture. |
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| The behavioral sequence leading to a copulation has been extensively described in the domestic fowl. |
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| He similarly subdues the frank eroticism of Stolberg's protoplastic copulation of Earth and Heaven. |
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| Nematomorphs are dioecious, they reproduce with true copulation or pseudocopulation. |
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| The golden orb-web spider Nephila plumipes frequently cannibalizes males both before and during copulation. |
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| We investigate the adaptive value of cannibalism in this orb-web spider, where 60 percent of males do not survive copulation. |
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| During copulation, males move their copulatory organs, the pedipalps, in a rhythmic, twisting manner. |
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| In this situation the cost of mating for the female is essentially the cost of a copulation. |
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| The frigid old crone who taught us made copulation seem like the most boring thing possible. |
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| In Drosophila species, the male accessory gland secretes seminal fluids transferred to the female during copulation. |
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| Following copulation, the female tongue worm releases her eggs into the host's lungs. |
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| The males mount the females for one-to two-minute intervals before copulation actually takes place. |
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| This permits the male to mount her back and attempt copulation by curling his abdomen to clasp her genitalia. |
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| For many are less venereous, and not so hot, and do not with any great desire use copulation, but rather decline from it. |
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| In true spiders, the chelicerae are modified into fangs with poison glands, while the pedipalps of the males are modified for copulation. |
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| Either hemipenis can be used in copulation and must be everted through a process of turning itself inside out. |
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| Reproduction means survival of the human race, but it is much more than copulation. |
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| Sexuality must not be presented as being simply a question of hedonistic and irresponsible copulation. |
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| I know, I'm sorry – it's just nothing really appeals to me about orc copulation or whatever goes on in it. |
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| Egg laying occurs in batches, beginning 3-4 h after copulation, and is spaced out over several days. |
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| True copulation, or sexual union between individuals, does not occur in this process. |
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| Temperature thresholds for copulation, egg laying and hatching are 10.5, 12-13 and 14°C, respectively. |
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| After copulation the males die and the females remain on the roots while eggs develop within them. |
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| During copulation, he deposits sperm into her sperm receptacle and places a plug in it, perhaps to retain his sperm or prevent other males from mating with her. |
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| Females begin to cannibalize males during the first copulation, but males usually survive and achieve a second copulation following a second period of courtship. |
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| Imagoes usually hatch at night and copulation, lasting 1-2 h, takes place immediately. |
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| In the present study we examined whether comb size was related to testosterone levels, to a suite of behavioral and territorial traits, and to copulation success. |
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| We observed the pair's behaviors continuously until the snails either became unreceptive, achieved mutual copulation, or were separated before copulating. |
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| According to law you've got to disclose such a fact prior to copulation. |
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| After copulation, the male may leave behind a mating plug to insure his paternity. |
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| At this, the male becomes excited, further preening the female and copulation takes place. |
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| Successful copulation among spiders requires the pedipalp located on the right side of the male's abdomen to align with the female orifice located to her right and vice versa. |
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| A paper by Walter Joyce of the University of Tübingen and his colleagues, published in Biology Letters, describes the fossils and speculates how they were killed in the act of copulation. |
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| Its policemen, seemingly ignorant of forensic science, behave as if trapped in treacle: off duty, one of them watches the only action available, repeated copulation. |
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| We don't think or talk about the mechanism of that production, whereas in fact if we were to transpose this to the same-sex relationship, there is no escaping the facts of copulation here. |
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| Does copulation take place more often at the surface or at depth? |
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| Sodomy is the crime of unnatural copulation. |
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| In noncompetitive mating, adult males of 40-60 mm carapace width had repeated but brief copulations, while adult males of 120-140 mm carapace width had one long copulation. |
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| Johnsgard reports, for cranes in general, copulation usually precedes egg-laying by about a month. |
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| A new study of the copulation habits of Barbary macaques may shed some light on the nature of your romantic Valentine's evening tryst. |
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| Solomon, who was one of the Deity's favorities, had a copulation cabinet composed of seven hundred wives and three hundred concubines. |
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| After the completion of copulation, the number of eupyrene sperm bundles in a spermatophore gradually decreased. |
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| Females will sometimes encourage other males to engage in copulation to guarantee successful fecundity. |
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| Male specimens are mainly ripe from January until end of May, and lost weight after copulation. |
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| This commotion attracts other males to the scene, and the most dominant will end the copulation and attempt to mate with the female himself. |
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| During copulation, the male stands on his hind legs with his head held up and his front legs resting on the female's sides. |
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| And if any man's seed of copulation go out from him, then he shall wash all his flesh in water, and be unclean until the even. |
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| The male's bulbus glandis enlarges during copulation, forming a copulatory tie which may last for more than an hour. |
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| The female epigynum of the genus Hemicloea have a peculiar, folded scapus, which expands during copulation. |
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| To prevent others from copulating with a former love, males will break off a palp after copulation and permanently seal the female's genital orifice. |
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| Feticide can occur in horses and zebras due to male harassment of pregnant mares or forced copulation, although the frequency in the wild has been questioned. |
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| About three days after copulation the hen starts laying eggs. |
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| The oviparous species lay eggs three to six weeks after copulation. |
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| Even single human observers may cause the hens to fly off and prevent copulation in this very short time span where they are ready for conception. |
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| The male inserts one clasper into the female cloaca during copulation. |
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| Inbreeding avoidance mechanisms can also operate subsequent to copulation. |
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| As with all tetrapods, lizards rely on internal fertilisation and copulation involves the male inserting one of his hemipenes into the female's cloaca. |
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| She will drop to the ground and he will mount for copulation. |
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| The courtship is initiated by the male chasing the female while calling continually, and later by ritual feeding, with copulation usually following. |
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| Transfer of a larval mantispid during copulation of its spider host. |
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| The frequency of copulation also varies among families and species. |
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