Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 36, Problem 10RQ
Polygyny is a form of polygamy in which a male mates with more than one female. Explain how three forms of polygyny differ from each other:
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Which of the following statements is NOT the reason why females are choosy?
By being choosy, she can acquire advantageous genotypes for her offspring from her mates.
By being choosy, she can acquire resource for her offspring from her mates.
By being choosy, she can ensure that her male offspring can attract more females as well.
Her seeming choosiness is a by-product of her stereotypical behaviors exploited by the males for mating gains.
All listed above are reasons why she is choosy
Polygyny is a common mating system in nature. Which one of the following scenarios is LEAST likely to result in a polygynous mating system?
Male stalk-eyed flies form leks where receptive females come visit
Male Neotropical giant damselfly defend water-filled tree holes, which are the oviposition sites for females. Suitable tree holes for oviposition are rare and females must mate with the resident male in exchange for access to the oviposition sites.
Male Bengal tigers defend large territories that contain food sources. Female Bengal tigers visit male territories to mate. The density of the Bengal tiger is extremely low that male tigers rarely encounter more than one female in their lifetime.
In the bumblebee-wolf Philanthus bicinctus, females are unreceptive until they finish constructing the long underground burrow as nest sites. Males search for locations containing a number of newly constructed burrows and attempt to control these sites against the intruders.
Your cousin Peter…
Male California sea lion mating success is determined by the number of mates they can acquire. Larger males are more successful at maintain larger territories. Females remain in one territory for the duration of the mating season and larger territories support more females than smaller territories. Additionally, the most successful males will fast during mating season to remain present in their territory at all times. If they leave to hunt they risk loss of their territory and access to all the females present in it. Which of the following best describes sexual selection in this species?
a.
Males likely engage in male-male combat to maintain territories.
b.
Intersexual selection is likely stronger than intrasexual selection.
c.
Sexual selection on the females is stronger than on the males.
d.
Females will mate with smaller males at a higher frequency than larger males
Chapter 36 Solutions
Loose Leaf For Integrated Principles Of Zoology
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Explain why hermaphroditism is a good solution to enjoy the benefits of sex while also confronting the problem of finding a mate in a sparse population.arrow_forwardIntrasexual selection involves competition among one sex (typically males) for mating access to the other sex. Intersexual selection involves mate choice in which individuals from one sex (typically females) choose their mates from among individuals of the other sex. Imagine a group of males that is engaged in agonistic behavior, from which Male A emerges triumphant. Now imagine a female that is assessing all of the males that were involved in the fights, and chooses Male A. Explain why this situation shows how intrasexual and intersexual selection pressures are likely both at play in the trait selection.arrow_forwardRegarding mating behavior, choose the false statement from the list: Some aspects of courtship behavior may have evolved from agonistic interactions. Courtship interactions ensure that the participating individuals are nonthreatening and of the proper species, sex, and physiological condition for mating. The mating relationship in most mammals is monogamous, to ensure the reproductive success of the pair. Polygamous relationships most often involve a single male and many females, but in some species this is reversed. Salmon swimming against the stream to lay eggs is an example of taxis. tropism. kinesis. cognitive mapping spatial learning Female Apanteles wasps lay their eggs in caterpillars of the genus Pieris. The site of the caterpillar initiates the egg laying behavior. This is an example of a fixed action pattern. problem solving behavior. habituation.…arrow_forward
- Male honey bees (Apis mellifera) die when they mate for the first and only time, achieving suicidal monogamy when their genitalia are donated to the female. Try to explain the male’s suicidal mating behavior in light of the alternative hypotheses for male monogamy. What predictions follow from these different explanations? What data are required to resolve the issue?arrow_forwardprovide a paragraph on sexual dimorphism. discuss why some species have pronounced dimorphism, and others dont. relate to roughgardens's discussion of gender roles and parental care. Include specific examplesarrow_forwardWhy is long-term parental care not associated with having many offspring during a reproductive episode?arrow_forward
- In animal husbandary,if two closely related animals are mated for a few generation,it result in loss of fertility and vigour.why is this so?arrow_forwardWhat are indirect fitness benefits of siblicide? When would an individual gain more from siblicide than from inclusive fitness benefits? When might it be worth it for a subordinate to fight to the death with its dominant sibling?arrow_forwardThe brightness of color in male Blue-footed boobies correlates with higher mating success. Why is the color of the feet considered an ‘honest signal’?arrow_forward
- Which of the following observations is NOT an example of intra-sexual competition? Killing young individuals who are not one s own offspring Guarding harem one has secured Having a specialized penile morphology that can displace other malesâ sperms Having a showy display to attract a matearrow_forwardHigh testosterone is often associated with shorter lifespan in mammals. However, you find a new species of mouse in which males live longer than females under field conditions. Which of the possible explanations below would NOT predict this pattern? Male-male competition often injures the participants. Females suffer costs of reproduction caused by the burden of milk production. Males, but not females, provide territorial guarding that improves the survival of their grandchildren. Females enter menopause and stop reproducing at age five, while males can reproduce until death.arrow_forwardWhich mating system is associated with sexual dimorphism, bachelor groups, and infanticide committed by outsiders? Group of answer choices polygyny polygynandry monogamy polyandryarrow_forward
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