prey. However, when the two species co-occur, the red- ng, stronger jaw, while the valley-and-ridge salamander e two species consume prey of different sizes. Which of e observations? usion

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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Q4.15. When two salamander species, the red-backed salamander and the valley-and-ridge
salamander, occur without the other present, their jaw structures are identical, and they
consume the same prey. However, when the two species co-occur, the red-backed salamander
has a slower-closing, stronger jaw, while the valley-and-ridge salamander has a faster-closing,
smaller jaw, and the two species consume prey of different sizes. Which of the following is
suggested by these observations?
Competitive exclusion
Preemptive competition
A trade-off between growing fast and competing well
Character displacement
Transcribed Image Text:Q4.15. When two salamander species, the red-backed salamander and the valley-and-ridge salamander, occur without the other present, their jaw structures are identical, and they consume the same prey. However, when the two species co-occur, the red-backed salamander has a slower-closing, stronger jaw, while the valley-and-ridge salamander has a faster-closing, smaller jaw, and the two species consume prey of different sizes. Which of the following is suggested by these observations? Competitive exclusion Preemptive competition A trade-off between growing fast and competing well Character displacement
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