The most likely reason these fish do not interbreed, despite being able to do so, is that they are behaviorally isolated. Behavioral isolation occurs when species have different mating behaviors or rituals that prevent them from mating even when they coexist in the same area. In the case of the freshwater fish (Salvelinus spp.) in the lakes, the differences in forms and behaviors among the populations in different lakes likely contribute to their reproductive isolation.
he species of freshwater fish (Salvelinus spp.) in the lakes of Switzerland, Scandinavia and Great Britain could interbreed but do not. Almost every lake has a different form of these fish. What is the most likely reason don’t these fish interbreed?(1 point)
Responses
They are gametically isolated
They are gametically isolated
They are behaviorally isolated
They are behaviorally isolated
They are temporarily isolated
They are temporarily isolated
They are geographically isolated
1 answer