According to the Daily Mail of May 14, researchers at St Andrews University recently found that the shorter the penis of bugs, the worse their fertility. This discovery may play a guiding role in the study of human fertility.
The researchers controlled the experimental variables by cutting the penis of the bug, and constructed a high-resolution 3D model of bug mating using X-ray scanning. It was found that penis length was closely related to fertility. The number of offspring decreased significantly when 5% of the penis was cut off, and the mating time was only half of the normal time when 30% of the penis was cut off.
Long bugs belong to the suborder Heteroptera. The penis is long and convoluted tubular, accounting for 70% of the length of the body. They have no nerves, blood vessels and muscles. Researchers say the experiment will not harm the insects themselves.