Sentence examples for copulation period from inspiring English sources

This evolved copulation period represents roughly 3%% of the worm's six-day reproductive lifespan per mating, so this is not an insignificant change.

Our finding of an inability of hybrid males to transfer sperm into females, despite being able to properly engage in copulation for periods of times that should allow the proper transfer of sperm, suggests that sterility is primarily a consequence of a postmating prezygotic problem, but not a spermatogenic defect.

A female gives her copulation calls throughout the period, concealing her most fertile time from the males.

The first is the eating process allows for a longer period of copulation and thus fertilisation of more eggs.

Females can ovulate up to three times in a 21-day period, and copulation can take five days; one instance of a couple being in the mating den for eight days has been recorded.

A single experimental male and a virgin CS female were placed in the chamber and observed for 10 min. The Courtship Index (CI) was calculated as the fraction of time that a male spent courting the female (includes tapping, wing extension and vibration, attempted copulation) during the observation period.

Acoustic behaviors were recorded for 20 min, and it was noted if copulation occurred during this period.

In fact, we found that sperm donation in the first copulation after an isolation period was twice as high towards imposed females compared to hermaphrodites.

5-day-old socially naive CS males were paired individually with 5-day-old CS or miR-124 virgin females and the number of females that accepted copulation over an observation period of 20 min was scored.

This raised the question of why the male would need an extended time period between copulations.

If no copulation occurred within this time period, we assumed that the female was not receptive to mating.