terrestris appear to be singly mated
in Central Europe (Schmid-Hempel and Schmid-Hempel 2000).
Over the course of several months (May 2003 - October 2003), 21 pairs of Aplysia califonica were successfully mated
as initial partners.
Any females that these males refused to mate in the first run were then paired with other males that had not mated
within the past two days.
When the female died, the number of times it had mated
was ascertained by counting the spermatophores present in her bursa copulatrix.
It was found that despite observed differences in mating behaviours and reproduction activities in females mated
to different strains of males, there were only negligible mating-dependent differences in gene expression between the groups.
In various studies, he and a colleague compared aspects of mating, for example, the length of time that the snails courted before copulating, when snails mated
with and without dart piercing.
Data were analyzed using a contingency test with re-mating treatment (1 d, 3 d and 30 d) as the factor, and mating outcomes (mated
twice) as the response, to determine if mating a second time was dependent on the mating treatment.
Within the first 10 min, a significantly higher percentage of Canton-S females mated
with Canton-S than with Tai-Y males, whereas Tai-Y females mated
about as often with males from both strains (fig.
In the first experiment, to determine mating frequency of individual females caged with multiple males, the 41 females mated
to control males lived a mean of 5.
The following morning we discarded the males and transferred the mated
females to screen cages (30 cm cubes, 50-75 females per cage).
We measured the short-term effects of multiple mating by comparing the fecundity and fertility of females mated
singly (n = 20) and those mated
He speculates that mated
pairs might have matched clocks.