Both
copulations lasted nearly 2 min, and during penetration, the male performed intense leg tapping on the dorsum of the female using his first pair of legs, and simultaneously on the female's hind legs and venter using his second pair of legs.
These variables included the number of
copulations the male obtained, number of
copulations a male obtained (squared), female longevity,
copulation duration (squared) and the differences between blocks (table 3).
We estimated
copulation as periods when the male's palps were resting stationary against the female's genital opening.
The reproductive success of males cannot necessarily be measured by simply counting numbers of
copulations or females mated.
Considering just the females that copulated, the number of
copulations did not predict the likelihood of laying viable eggs (Binomial Model: [beta] = 0.054; P = 0.567).
Predation risk increases during
copulation, especially when pairs stay in copula for extended periods (Magnhagen, 1991; Han et al., 2015).
All females were fertilized once and up to four times, and the average number of
copulations, represented by the number of spermatophores (2.286 [+ or -] 1066), did not vary significantly between couples of different sizes (F= 0.659, P= 0.523).
Chi square test (Chi2) was used to test the difference in number of
copulations achieved by males from different food regimes (calculated on the basis of 1:1 null hypothesis).
Wiley (1973) also reported females that mated with multiple males due to disrupted
copulations, which makes this a more common phenomenon than previously believed.
Washington, Feb 13 ( ANI ): A sea slug's has an unusual mating behavior - it discards its penis after
copulation, grows a new one, and has sex the next day.
We used separate paired t-tests to compare the average number of
copulations per cage and the average duration of mating for each species at each age.
The most important intrasexual selection occurs between males and is the relationship between fight success and
copulations achieved.
