Table 1.

Quantification of sexual behavior and endocrine analysis.

Exposure	Vehicle	DEHP-0.5	DEHP-5	DEHP-50
Mating behavior componentsa
Number of M	$4.29\pm 0.92$	$4.36\pm 0.83$	$4.71\pm 1.04$	$4.53\pm 0.95$
Number of MI	$17.57\pm 3.81$	$19.29\pm 3.43$	$12.35\pm 2.53$	$12.69\pm 1.62$
Number of Th	$369.00\pm 70.95$	$416.00\pm 59.51$	$338.76\pm 54.46$	$343.69\pm 57.37$
MI ratio	$75.38\pm 4.57$	$76.55\pm 4.33$	$73.91\pm 4.40$	$72.46\pm 3.37$
Mating duration (min)	$14.24\pm 2.80$	$21.40\pm 4.28$	$15.14\pm 3.19$	$14.60\pm 2.45$
Grooming duration (%)	$15.60\pm 2.36$	$16.74\pm 1.61$	$20.18\pm 2.78$	$16.46\pm 1.56$
Urogenital tract weight and testosterone levelsb
Body weight (g)	$28.18\pm 0.40$	$28.15\pm 0.50$	$27.31\pm 0.46$	$27.52\pm 0.40$
Testis weight (% bw)	$0.70\pm 0.01$	$0.69\pm 0.01$	$0.71\pm 0.03$	$0.72\pm 0.02$
SV weight (% bw)	$0.74\pm 0.02$	$0.77\pm 0.03$	$0.77\pm 0.02$	$0.70\pm 0.03$
Testosterone (ng/ml)	$1.91\pm 0.53$	$1.58\pm 0.23$	$2.32\pm 0.31$	$1.60\pm 0.28$

^aThe number of mounts without intromissions (M), mounts with intromissions (MI) and thrusts (Th), mounting index ratio ($\text{MI}=\text{MI}/\mathrm{M}+\text{MI}$), mating duration (time from the first intromission to ejaculation), and genital grooming expressed as percentage of mating duration, were determined in males exposed to the vehicle or di(2-ethylhexyl) phthalate (DEHP) at 0.5, 5, or $50\mathrm{\mu }\mathrm{g}/\mathrm{kg}/\mathrm{d}$. Data are expressed as the means $\pm \mathrm{SEM}$ for 11–12 males per treatment group.

^bBody weight (bw), testicular and seminal vesicle (SV) weights, and testosterone levels of vehicle and DEHP-exposed males subjected to behavioral tests. Data are expressed as the means $\pm \mathrm{SEM}$ for 11–12 males per treatment group. The data for the testis and SV are expressed as the percentages of the corresponding body weight.