During shorter mating periods, males may not meet the female as frequently as compared to longer mating periods where the male may meet the female repeatedly, leading to increased opportunity for copulation
Decreases in the copulation
rates and oocyte maturation in female mice housed with male mice may be explained by the pheromone hypothesis.
time did not correlate with any of the predictor variables (PCI: Spearman's p = 0.15, P = 0.47; Percentage of patch cover: Spearman's p = -0.15.
chape may occur due to failure in sexual recognition (Bailey and Zuk 2009, Bailey and French 2012) that can occur through pheromones left by females during previous matings (Thomas and Simmons 2009), or because postures or motor patterns of males are similar to females, inducing male's courtship or copulation
(Wendelken and Barth 1985).
To determine whether copulation
affects mobility, I placed copulating pairs (n = 30) and single bugs (n = 43) in an arena and measured average movement speed.
We evaluated the number of copulations
, the average fertility rate (average number of eggs per female) and longevity.
Effects of larval substrates on time to copulation
, mate choice, and mating propensity.
Testis intercecal, postovarian, bacilliform 119 (101-131; n = 12) long, 30 (27-38; n = 12) wide, vas deferens looping left intestinal caecum; seminal vesicle saccate, immediately posterior to copulation
complex; prostatic reservoir saccate, besides the seminal vesicle.
ludens, 6 d old control males had significantly more copulations
than treated males (t = 9.65, df = 9, P < 0.001), while there were no significant differences for 9 and 12 d old flies (t < 1.90, df = 9, P > 0.083, Table 1).
In Tables 1 through 3 we give a summary of the known behaviors for different species of Scarabaeus and Kheper during the periods of feeding-gonad maturation, nesting and copulation
. Here we analyze the different behavior sequences in an ecological context.
the position of the male's legs is as follows: foretarsi along anterior thorax of female; mesotarsi along pleural region of midabdomen of female; metatarsi along oviscape or distal portion of female's wings.
Because of the higher sperm investment in the first copulation
, successive matings may cause a decrease in fertility in lepidopteran species.