The sexual conflict hypothesis suggest that polyandry can occur due to sexual coercion preventing females from obtaining any benefits. ... Sexual coercion has many benefits to males allowing them to mate, but their strategies pose high cost for females. This has been observed in vertebrates like green turtles.

What are the benefits of polyandry?

The benefits of polyandry can be categorised into those that increase a female's fitness directly and those that do so indirectly. The most obvious direct benefit is the acquisition of sufficient sperm to fertilise all of a female's ova.

Where does polyandry occur?

Polyandry is a form of polygamy in which a woman takes two or more husbands at the same time. For example, fraternal polyandry is practiced among Tibetans in Nepal, parts of China and part of northern India, in which two or more brothers are married to the same wife, with the wife having equal “sexual access” to them.