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
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 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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- Many factors influence a species mode of reproduction. Use the descriptions of the following species to predict what system of hermaphroditism they probably display. 1. Individuals rarely disperse once they are sexually mature, and the largest males get the most matings. Females protect the eggs. [Select] 2. Resources are of uniform quality and evenly dispersed, so males are unable to monopolize them. Females are larger than males; Males protect the eggs. [Select] 3. Individuals are solitary, rarely meet others, and have no way of knowing the sex ratio in the population. There is no parental care. [Select] [Select] protogynous hermaphrodite continuous hermaphrodite protoandrous hermaphroditearrow_forwardWhat is the cost of sexual reproduction for males of Teleogryllus oceanicus on Kauai island?arrow_forwardGrasshopper's environment pressures: What obstacles in regard to finding food, habitat, climate, mating? How does it deal with these pressures?arrow_forward
- How will our live be affected if we fail to control the spread of jellyfish populations?arrow_forwardReview View Help Editing A BI U v Ev E E E E A Question 3 Females are usually the limiting sexual resource in populations. A) True B) False Question 10 options: is intraspecific variation due to environmental differences during development as opposed to genetic differences. (2 words)arrow_forwardsocially, sexually, seasonally are the optionsarrow_forward
- | bartleby Male red-winged blackbirds have bright red patches on their shoulders (epaulets). C Home | Chegg.com Females prefer to mate with males with the largest epaulets. Researchers captured all of the male birds in a single population. They measured how many parasites each male had (#parasites/body mass, higher numbers indicate a higher parasite load) and the size of the male's epaulets (cm). They produced the following graph (the line shows the relationship between parasites and epaulet width): 0.5- 0.4- 0.3- 0.2 0.1 2.0 2.5 3.0 3.5 4.0 Epaulet Width (cm) Explain what these data reveal about the correlation between epaulet size and parasite load and what might explain the fact that females prefer to mate with males displaying large epauletsa Parasite Load (#parasites/body mass)arrow_forwardgle Chrome om/mod/quiz/attempt.php?attempt=17129308cmid%-837776 NG SYSTEM (ACADEMIC) In a sponge, reproduction is: CO a. Individuals have both male and female reproductive systems. O b. Individuals either have a male or a female reproductive system. C. Some individuals have only sexual reproduction, while others are entirely asexual. O d. Reproduction is entirely asexual by budding. O e. Individuals have nor reproductive organs, but produce both male and female gametes.arrow_forwardIn a habitat there are 7,500 individuals of P. rufipes, 40% of which have long and thin ovipositors and 60% have short and thick ovipositors. During a single year 250 wasps with long and thin ovipositors died while 325 were born. In that same year, 650 wasps with short, thick ovipositors were born and 800 died. Calculate the per capita growth rate (r) of the two subpopulations of P. rufipes. Per capita growth rate of P. rufipes with long and thin ovipositors: _________ Per capita growth rate of P. rufipes with short and thin ovipositors: _________arrow_forward
- 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?arrow_forwardWhich of the following is associated with multiple reproductive episodes during a species’ lifetime? semiparity iteroparity semelparity fecundityarrow_forwardWhat is the “cost of males” in outcrossing reproducing species compared to obligate self-fertilizer or asexually reproducing species?arrow_forward
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Reproduction: Crash Course Zoology #9; Author: CrashCourse;https://www.youtube.com/watch?v=poLyJDVjKlM;License: Standard youtube license