1. Think back to Section 44.6. When researchers moved guppies from populations preyed on by cichlids to a habitat with killifish, the life histories of the transplanted guppies evolved. They came to resemble those of guppy populations preyed on by killifish. Males became gaudier; some scales formed larger, more colorful spots. How might a decrease in predation pressure on sexually mature fish allow this change?

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter44: Population Ecology
Section: Chapter Questions
Problem 1CT: Think back to Section 44.6. When researchers moved guppies from populations preyed on by cichlids to...
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CRITICAL THINKING
1. Think back to Section 44.6. When researchers moved
guppies from populations preyed on by cichlids to a
habitat with killifish, the life histories of the transplanted
guppies evolved. They came to resemble those of guppy
populations preyed on by killifish. Males became
gaudier; some scales formed larger, more colorful spots.
How might a decrease in predation pressure on sexually
mature fish allow this change?
Transcribed Image Text:CRITICAL THINKING 1. Think back to Section 44.6. When researchers moved guppies from populations preyed on by cichlids to a habitat with killifish, the life histories of the transplanted guppies evolved. They came to resemble those of guppy populations preyed on by killifish. Males became gaudier; some scales formed larger, more colorful spots. How might a decrease in predation pressure on sexually mature fish allow this change?
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