The results show that males focus their mating efforts on the most fertile females by combining information about the timing of swelling and reproductive history. Because male bonobos can effectively ...

Journal of Herpetology, Vol. 18, No. 4 (Dec., 1984), pp. 396-405 (10 pages) The pituitary gland and right testis, ductus epididymidis, ductus deferens, and renal sexual segment were examined ...

Previous studies have shown both prolonged and plastic cycles in viviparous females of the genus Liolaemus (Iguania: Liolaemidae) from the cold temperate climate of Patagonia. Males have shown ...

produce and transport semen, which contains sperm release sperm into the female reproductive tract during sex make male sex hormones, such as testosterone Have you ever wondered what the different ...

The male reproductive system refers to the bodily systems responsible for sexual function in males. It consists of external and internal structures responsible for the formation, storage, and ...

For years, infertility has been perceived as a predominantly female problem, a misconception that continues to influence how couples seek treatment. In reality, medical evidence shows that male-factor ...

Male bonobos can decipher females’ unreliable fertility signals, allowing them to focus their efforts on matings with the highest chance of conception, according to a study by Heungjin Ryu at Kyoto ...