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If reproductive mode is truly bisexual, any mating absence and copulation delay may lead to destruction of the population since males have very limited range of movement.
Ten pairs of snails (one male and one female in each pair) were placed in small individual beakers in an attempt to record copulation and the number of capsules spawned by the females.
Zygotes: Female mice induced with hCG 48 h after PMSG injection were placed in a cage with a male for copulation. The ampulla of a female mouse with positive vaginal plaque was removed 22 h after hCG injection.
The videos were then analyzed to develop an ethogram of the three stages of breeding for both males and females: (i) precopulation display and response; (ii) copulation behavior; and (iii) post-copulation behavior (i.e..
Copulation begins when a male inserts his spermatophore duct into the female copulatory papilla for sperm transfer (Alexander and Otte 1967).
In December, reported that Ciotta faced three felony charges with one count of oral copulation with a minor and two counts of sexual intercourse with the underage boy in June, the complaint stated.
Predation risk increases during copulation, especially when pairs stay in copula for extended periods (Magnhagen, 1991; Han et al., 2015).
According to autocorrect, co-operation can end up as copulation, Batman comes out as breast-milk and marrying ends up as mutilating.
Courtship in the slow worm world can often last for as long as 10 hours before copulation occurs.
Its foci include human foibles, Canadian eccentricities, and, always, copulation:
John Albert Carlson, a former California resident, is being held in the Lane County Jail on six counts of lewd acts with a child and two counts of oral copulation or sexual penetration of a child under 10 years of age.