Question

directions: identify which type of reproductive isolation is being show in each example below:
g = geographic t = temporal b = behavioral

1. two species of fireflies come out between the hours of 9 - 11 p.m. each species has a unique pattern of flashes that attracts a mate.
2. two species of plants sprout from the ground at different months in the year.
3. two species of frogs call from the water at the ponds edge for a female.
4. two species of squirrels get stranded on either side of a grand canyon.
5. two species of mountain lions live in a forest on either side of a large river.
6. two species of songbirds call from a tree for a potential mate.
7. two species of bowerbirds construct elaborate nests to attract a mate.

Explanation:

1. Behavioral isolation occurs when species have different mating behaviors (unique flash patterns for fireflies).
2. Temporal isolation is when species reproduce at different times (plants sprouting at different months).
3. Behavioral isolation (frogs' calling behavior).
4. Geographic isolation (squirrels separated by a canyon).
5. Geographic isolation (mountain lions separated by a river).
6. Behavioral isolation (songbirds' calling behavior).
7. Behavioral isolation (bowerbirds' nest - building behavior).

Answer:

1. B
2. T
3. B
4. G
5. G
6. B
7. B