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