Fitness 6. The primary theory to explain the evolution of cooperation among relatives is Kin Selection. The graph below shows how Kin Selection theory can be used to explain cooperative displays in male wild turkeys. B When paired, subordinant males increase the reproductive success of their solo, dominant brothers. 0.9 C 0 Dominant Solo EVOLUTION Se, Box 13.2 © 2023 Oxford University Press rB rB-C Direct Indirect Fitness fitness fitness gain Subordinate 19 Fitness After A. H. Krakauer. 2005. Nature 434: 69-72 r = 0.42 Subordinant Dominant a) Use Hamilton's Rule to show how Kin Selection can support the evolution of cooperation in this system. Show the math. (4 b) Assume that the average relatedness among male turkeys in displaying pairs was instead r = 0.10. Could kin selection still explain the cooperative display behavior (show math)? In this case, what alternative explanation could you give for the behavior? (4 pts) 7. In vampire bats (pictured below), group members that have fed successfully sometimes feed regurgitated blood to other members of the group, which are not particularly closely related to the donor. (A) Natalia Kuzmina/Alamy St a) What would you predict about the stability of groups in these bats? Explain your answer in light of what we know about the evolution of cooperation among non- relatives. (3 pts) EVOLUTION 5e, Figure 13.6 2023 Oxford University Press b) Assume that something happens to decrease the stability of groups. For instance, a new disease might arise that dramatically reduces life expectancy (bats are usually very long lived). What might happen to cooperative behavior? (3 pts) david scott dodd/Shutterstock.com
Fitness 6. The primary theory to explain the evolution of cooperation among relatives is Kin Selection. The graph below shows how Kin Selection theory can be used to explain cooperative displays in male wild turkeys. B When paired, subordinant males increase the reproductive success of their solo, dominant brothers. 0.9 C 0 Dominant Solo EVOLUTION Se, Box 13.2 © 2023 Oxford University Press rB rB-C Direct Indirect Fitness fitness fitness gain Subordinate 19 Fitness After A. H. Krakauer. 2005. Nature 434: 69-72 r = 0.42 Subordinant Dominant a) Use Hamilton's Rule to show how Kin Selection can support the evolution of cooperation in this system. Show the math. (4 b) Assume that the average relatedness among male turkeys in displaying pairs was instead r = 0.10. Could kin selection still explain the cooperative display behavior (show math)? In this case, what alternative explanation could you give for the behavior? (4 pts) 7. In vampire bats (pictured below), group members that have fed successfully sometimes feed regurgitated blood to other members of the group, which are not particularly closely related to the donor. (A) Natalia Kuzmina/Alamy St a) What would you predict about the stability of groups in these bats? Explain your answer in light of what we know about the evolution of cooperation among non- relatives. (3 pts) EVOLUTION 5e, Figure 13.6 2023 Oxford University Press b) Assume that something happens to decrease the stability of groups. For instance, a new disease might arise that dramatically reduces life expectancy (bats are usually very long lived). What might happen to cooperative behavior? (3 pts) david scott dodd/Shutterstock.com
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
Chapter43: Animal Behavior
Section: Chapter Questions
Problem 2CT
Related questions
Question
Transcribed Image Text:Fitness
6. The primary theory to explain the evolution of cooperation
among relatives is Kin Selection. The graph below shows how
Kin Selection theory can be used to explain cooperative displays
in male wild turkeys.
B
When paired, subordinant males
increase the reproductive success
of their solo, dominant brothers.
0.9
C
0
Dominant
Solo
EVOLUTION Se, Box 13.2
© 2023 Oxford University Press
rB
rB-C
Direct Indirect Fitness
fitness
fitness gain
Subordinate
19
Fitness
After A. H. Krakauer. 2005. Nature 434: 69-72
r = 0.42
Subordinant
Dominant
a) Use Hamilton's Rule to show how Kin Selection can
support the evolution of cooperation in this system. Show
the math. (4
b) Assume that the average relatedness among male turkeys in
displaying pairs was instead r = 0.10. Could kin selection
still explain the cooperative display behavior (show math)?
In this case, what alternative explanation could you give for
the behavior? (4 pts)
7. In vampire bats (pictured below), group members that have
fed successfully sometimes feed regurgitated blood to other
members of the group, which are not particularly closely related
to the donor.
(A)
Natalia Kuzmina/Alamy St
a) What would you predict
about the stability of groups
in these bats? Explain your
answer in light of what we
know about the evolution of
cooperation among non-
relatives. (3 pts)
EVOLUTION 5e, Figure 13.6
2023 Oxford University Press
b) Assume that something happens to decrease the stability of
groups. For instance, a new disease might arise that dramatically
reduces life expectancy (bats are usually very long lived). What
might happen to cooperative behavior? (3 pts)
david scott dodd/Shutterstock.com
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