CUSTOM BIOLOGY
19th Edition
ISBN: 9781323945490
Author: Urry
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 51.3, Problem 2CC
WHAT IF? Ø Suppose an infection in a common side-blotched lizard population killed many more males than females. What would be the immediate effect on male competition for reproductive success?
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Iti do a cohort study on some new cute animal, and I discover that most of the individuals die at a relatively young age, and only a few live close to the maximum age for the species, what
would you predict about the reproductive strategy of this species?
O They probably produce relatively few offspring and invest a lot of parental care into each offspring.
O They probably produce a lot of offspring, and invest a lot of parental care into each one.
O They probably produce a lot of offspring but do not invest much parental care in any individual offspring
O They probably produce offspring only after individuals manage to live to close to their maximum age
Explain the evolution of
alternative male reproductive
strategies within a single
species. Give examples.
nool deminerER
What can less dominant males do?
morebeemto lemates
Compensatory mating strategies
1. Forming friehdships with a particular female
(babbons).
2. Preejaculationfigienas).
3. Rape (ducks seorpionflies).
4. Satellite males ("parasitize successfulmales)
Highand loakung mae s ors were found a have
cs ofemales Du he hg arng mae had more
cmso lesales during estr Nghe chance to produce
Makingthe-best-of-a-bad-jab
reproduotive strategy
Conditional mating strategies:
Co-existing reproductive strategies
Genetic capacity for two altermative mating
strategies (decision" is made during
development, depending on nutrientavailability)
Big horn, small testes
OR
Small horn, large testes
Three different forms of sponge isopod males
CS Scanned with CamScanner
Mating success
Reproductive success
Mating success
80
80
Reproductive success
15
12
60
60
12
40
40
6.
20
20
3.
15
30
30
12
6.
20
20
4
10
10
2.
0 1 2 3 4 5
Number of mates
0 100 200 300
Number of offspring
0 1 2 34
Number of mates
0 40 80 120
Number of offspring
Figure 2. Distributions showing variation in mating and reproductive success in male (upper) and
female (lower) of Rough-Skinned Newts (left) and Broad-nosed Pipefish (right).
2. In which of the two species would you predict the costs of reproduction between males and
females is more similar and why?
Number of females Number of males
Chapter 51 Solutions
CUSTOM BIOLOGY
Ch. 51.1 - WHAT IF? Suppose you exposed various fish species...Ch. 51.1 - MAKE CONNECTIONS How is the lunar-linked rhythm...Ch. 51.1 - How might associative learning explain why...Ch. 51.2 - Prob. 1CCCh. 51.2 - Prob. 2CCCh. 51.2 - Why does the mode of fertilization correlate with...Ch. 51.3 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 51.3 - WHAT IF? Suppose an infection in a common...Ch. 51.3 - Prob. 3CCCh. 51.4 - Prob. 1CC
Ch. 51.4 - Prob. 2CCCh. 51.4 - How is migration based on circannual rhythms...Ch. 51 - Prob. 51.1CRCh. 51 - In some spider species, the female eats the male...Ch. 51 - Prob. 51.3CRCh. 51 - Prob. 51.4CRCh. 51 - Prob. 1TYUCh. 51 - Prob. 2TYUCh. 51 - Female spotted sandpipers aggressively court males...Ch. 51 - Prob. 4TYUCh. 51 - Although many chimpanzees live in environments...Ch. 51 - Prob. 6TYUCh. 51 - Level 3: Synthesis/Evaluation 7. DRAW IT You are...Ch. 51 - EVOLUTION CONNECTION We often explain our behavior...Ch. 51 - SCIENTIFIC INQUIRY Scientists studying scrub jays...Ch. 51 - SCIENCE, TECHNOLOGY, AND SOCIETY Researchers are...Ch. 51 - WRITE ABOUT A THEME: INFORMATION Learning is...Ch. 51 - SYNTHESIZE YOUR KNOWLEDGE Acorn woodpeckers...
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Reproduction: Crash Course Zoology #9; Author: CrashCourse;https://www.youtube.com/watch?v=poLyJDVjKlM;License: Standard youtube license