Like Bear Paw Lake, nearby Kalmbach Lake is an Alaskan lake that historically had no native predatory fish. The Alaska Department of Fish and Game started introducing rainbow trout into Kalmbach Lake in 1982. Prior to these introductions, pelvic reduction was common in this stickleback population. The rainbow trout is known to prey on stickleback. What would you hypothesize has happened to the stickleback population in the more than 30 generations that have elapsed since the trout was introduced

Question

Biology

Derek Sharp

16 April, 12:21

Like Bear Paw Lake, nearby Kalmbach Lake is an Alaskan lake that historically had no native predatory fish. The Alaska Department of Fish and Game started introducing rainbow trout into Kalmbach Lake in 1982. Prior to these introductions, pelvic reduction was common in this stickleback population. The rainbow trout is known to prey on stickleback. What would you hypothesize has happened to the stickleback population in the more than 30 generations that have elapsed since the trout was introduced

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Answers (2)

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Aryan Moody · Answer 1

There may be two possible situations for the spiny species, either it became extinct in the area where it lived, or it is found in low numbers.

Explanation:

We say that there may be the possibility that it continues without extinction, and in low numbers, since if the reproduction rate is higher than that of the rainbow trout, these will continue to be present, even if they are preyed upon, since they increase faster in number than rainbow trout.

Gunnar Webster · Answer 2

The stickleback population could have disappeared as a result of the introduction of a predator (in this case, the rainbow trout)

Explanation:

The negative effects of introduced predators may be significant for native populations and this process may even lead to the extinction of the population