Males of different species of the fruit fly drosophila that live in the same parts of the hawaiian islands have different elaborate courtship rituals. these rituals involve fighting other males and making stylized movements that attract females. what type of reproductive isolation does this represent?
The type of reproductive isolation carried out is BEHAVIORAL ISOLATION
Explanation: In behaviour isolation males of a certain specie carry out some courtship rituals such as fighting other males for the right to mate, making stylized movements in order to attract the female specie to them.
The correct answer is option c.
Behavioral isolation is a type pre-zygotic reproductive isolation, that is, it prevents the formation of zygote.
It includes all the differences the organisms of different species have in choosing a mate.
It includes all the rituals followed by the organisms before reproduction.
For example, pattern of mating dance, voice (singing) pattern, fighting rituals, et cetera.
So, if the two species follow different rituals or behavior then they do not tend interbreed.
The same is given in the question the two species of fruit fly follow different courtship rituals due to which they do not interbreed.
Thus, it is an example of behavioral isolation.
Behavioral isolation is a prezygiotic mechanism that occurs when two similar populations of a species that can interbreed evolve different behaviors that are unique and are not recognized by others. Behaviors such as courtship rituals is developed differently by each of the subpopulations, of which prevents one of the subpopulations from mating with the other, due to both species’ inability to recognize each other’s courtship rituals.