|Picture from here|
The males have a lot of advantages to get rid of their penis:
- all the semen can be transmitted to the females
- other males cannot copulate with the females because a penis is blocking the door
- the males are lighter and, therefore, can fight more efficiently against other males
- and more....
Read the article published today in Biology letters (Lee et al., Emasculation: gloves-off strategy enhances eunuch spider endurance)
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