Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 50, Problem 5TYU
Summary Introduction
To review:
Whether all organisms forage optimally or not.
Introduction:
Optimal foraging refers to an animal behavior searching for food. The foraging is done to an extent that gives them maximum benefit and involves minimum risk. The way in which they maximize their feeding efficiency is known as optimal foraging.
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Students have asked these similar questions
Does Totoaba offer any ecosystem benefits? I know their demise is causing the Vaquita to go extinct due to illegal poaching, however, are Totoaba themselves important? Essentially, if Totoaba went extinct, what would happen?
*This question is being asked for personal knowledge, not for any school assignments!
You want to distinguish between two hypotheses to explain the patterns you see:
1) Males not feeding the young is an adaptation to dimorphism
2) If males don't feed the young in a species, it will allow them to become brightly colored
To begin to address this question, map the characters changes in dimorphism and males feeding
the young onto each of the trees on the previous page.
CHARACTER
SEXUAL DIMORPHISM
MALES FEED YOUNG
Cassin's Vireo
No
No
Red Fox Sparrow
Cape May Warbler
Cedar Waxwing
Golden-Crowned Kinglet
Pyrrhuloxia
Yes
No
No
No
No
Yes
No
Yes
Yes
No
California Gull
No
Yes
Note: This data is fictional
5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.
What are some reproductive changes that may be adaptive in the face of parasitism? Why may males have higher rates of mortality due to parasites than females?
Chapter 50 Solutions
Biological Science (7th Edition)
Ch. 50 - Prob. 1TYKCh. 50 - Prob. 2TYKCh. 50 - Prob. 5TYUCh. 50 - Propose an evolutionary hypothesis to explain the...Ch. 50 - Prob. 8TYUCh. 50 - 10. J. B. S. Haldane once remarked that he’d be...Ch. 50 - Prob. 11PIATCh. 50 - Researchers followed tagged blue whales to observe...Ch. 50 - Prob. 13PIATCh. 50 - Prob. 14PIAT
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