Timing of Mating, Sperm Dynamics: MATERIALS AND METHODS(4)

Statistical Analysis

A Poisson regression analysis was used to examine trapping data from both males and females. Data were initially compared from the beginning of the mating season until the end of estrus as determined by the presence of unovulated females in the population (1-27 August inclusive). Trapping data collected from males during this period produced several large standardized residuals (7, 13, 14 August); these were compared with average male trapping rate for this period. Trapping data collected from females also produced several large standardized residuals (13, 20, 22 August); these were compared with the average female trapping rate across this period. Male trapping data from the remainder of the study period (28 August-5 September) were subsequently incorporated into the analysis to provide information on male trapping success after estrus when all females within the population had ovulated. This produced several large standardized residuals (27, 30 August; 3, 4, 5 September) that were compared with average male trapping rate across the study. Comparisons between male and female trapping data were also made using Poisson regression to test whether there was any relationship between male and female trapping success. antibiotic levaquin

Data on total sperm number and distribution in the female tract were analyzed and compared using ANOVA (data were normalized by a log transformation). The least-significant difference was used to test the pair-wise differences between mean sperm number in the lower isthmus across days. The proportion of females that had ovulated at the time of capture was compared during estrus (1-27 August inclusive) and postestrus (28 August-5 September) using a regression analysis.

About

So Many Advances in Medicine, So Many Yet to Come