Sentence examples for mating trials were from inspiring English sources

Sex organs weight analysis, histochemical and histopathological changes and mating trials were the criteria used to evaluate the reproductive efficacy of the treated rats.

For outcomes analysis, mating trials were initiated at 3 or 10 months of age under a paired breeding arrangement housing two females and one male of proven fertility in each cage.

To test this, BM harvested from young adult β-actin-EGFP transgenic females or vehicle was infused into non-conditioned wild-type recipient females once every 4 weeks starting at 8 months of age, and mating trials were begun 2 months later.

For fertility testing, 1 week post-cytotoxic drug treatment each female received a tail vein injection of vehicle or 1.5-3x107 BM-derived cells from young adult (8-10 weeks of age) wild-type male or female donors, and mating trials were conducted as described [ 16].

Competitive mating trials were performed between pairs of populations adapted to these two environments, with the trials designed to separate the effects of local adaptation on male mating success from plasticity of female mate preferences in response to these environments.

Males, which had been randomly assigned to each of the 80 enclosures containing the female burrows, were released daily into a 20×20×10-cm metal cage placed on top of the burrow entrance; 8 female mating trials were run per day.

The sequential behaviours observed during mating trials are listed and defined in the Additional file 1. Descriptive data on the mating procedure with females without a previous plug are given in Table  1.

Further studies on the relative costs and benefits associated with investment in different sexual traits in ungulates (see also [ 20]), through for instance the use of experimental manipulations (e.g. [ 19]) and mating trials, are now required before drawing any conclusion on the presence of an evolutionary trade-off.

Although laboratory mating trials are able to detect genetic differences in intrinsic female preferences [27], this might not reflect relative male mating success in nature where females are constantly harassed by males [28], [29] and are mating multiply [30], [31].

Three successive rounds of mating trials are used to sort males into these two groups (stud males being those that were successful at obtaining mates in all three rounds and dud males being those that were thrice unsuccessful).

Males mate more easily with older hermaphrodites [ 35], that also will have fewer self-sperm in their reproductive tract, but the < 4-hour difference in age of females between mating trials is probably too small of a difference to reflect this age effect.