Sentence examples for and frequency of copulation from inspiring English sources
Indirect methods have been developed that permit to estimate the number of "potential conceptions" associated with a given number of partners and frequency of copulation [28]; these methods would be extremely helpful in reducing the potential bias associated with extra-pair sexual relationships.
Between 1906 and 1916 – that is, between the ages of 23 and 33 – he kept a tally of his lovers (all male), both friends and pick-ups, together with frequency of copulation.
In work on other mammals, researchers have found an association between hormones, the frequency of copulation, and the sex of the offspring.
Significant behavioural measures include the frequency of copulation calls.
However, if two males of similar size competed, the frequency of copulation was highest [ 33].
In the Australian N. edulis the dominant male will increase the frequency of copulation in a competitive situation [ 29].
We calculated the frequency of copulations (WPCs and EPCs separately) and aggressive interactions (both separately and jointly for all degrees) per hour of time spent in the colony by each target bird.
For each bird, we also noted the frequency of copulations and the aggressive interactions they were involved in.
Instead, in the mating period we found that grooming performed by males to females was correlated with the frequency of copulations but not with grooming received by males from females (Video S2).
