1. Male frogs of many species aggregate in close proximity in the shallow water of ponds and produce conspicuous calls to attract female for mating. Two major disadvantages of calling in large groups like this is that it may make both males and females more susceptible to predation and it may lead to increased competition between males for access to the limited number of females that come to the pond to spawn. a. Please provide two hypotheses for ways in which this explosive breeding assemblage could in fact decrease the risks of predation for individual males and females, selecting for males to call in close proximity to other males and for females to seek out areas of ponds with large numbers of calling males.

1. Male frogs of many species aggregate in close proximity in the shallow water of ponds and produce conspicuous calls to attract female for mating. Two major disadvantages of calling in large groups like this is that it may make both males and females more susceptible to predation and it may lead to increased competition between males for access to the limited number of females that come to the pond to spawn. a. Please provide two hypotheses for ways in which this explosive breeding assemblage could in fact decrease the risks of predation for individual males and females, selecting for males to call in close proximity to other males and for females to seek out areas of ponds with large numbers of calling males.

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

Chapter44: Population Ecology

Section: Chapter Questions

Problem 1CT: Think back to Section 44.6. When researchers moved guppies from populations preyed on by cichlids to...

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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?
1. On the savannah of African exist two animals, the African Wild Dogs (Lycaon pictus) and the Spotted Hyenas (Crocuta crocuta). Both of these animals occupy a very similar niche in their community – a social carnivore, which hunts in packs. However, when their niche does completely overlap the Hyena will win the fight. Use this information to answer the following questions. a) If these two animals were to occupy the same habitat, knowing what you know about these populations, what do you think the outcome of these two populations would be? b) The African Wild Dog hunts at twilight, while the Spotted Hyenas hunt at night. This separation of niches allows for what ecological process to happen? Why is it important that this process happens? c) The population of African Wild Dogs is much smaller, and very isolated from one another. If you were trying to prevent this animal from going extinct – what would you focus your resources on conservation wise? (There are a number of answers for…
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