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Ch. 50 - Behavioral Ecology

Chapter 49, Problem 13

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. Using the graph, estimate the number of minutes of foraging per hour before and after the sound exposure. Then predict the effect of sonar on the fitness of blue whales. Explain your reasoning.

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Hello everyone and welcome to today's video. So these poison dart frogs are known for their daily toxins. How do they warn their predators to avoid being preyed on? So remember that an organism may use several things to avoid being preyed on in order to warn their predators, such as the smell, sound or even color. Well, in the sense of these poison dart frogs, they're going to be these frogs that you've probably seen in movies and textbooks that have very bright colors. There are these very small frogs that have very bright colors and this is an example of what we call warning coloration, in which these bright colors serve to let the partner know that they have deadly toxins and that eating them will result in very negative consequences for them because of this, The correct answer choice is going to be answer choice. They display a bright coloration that is going to be the end of the video and I really hope this helped you.
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Textbook Question

Evolutionary biologist Hopi Hoekstra and colleagues have hypothesized that the burrow-digging behavior of mice (and the resulting shape of their underground burrows) is heritable—innate and not learned. Design an experiment to test this hypothesis.

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Textbook Question

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. Whales communicate with one another using sound. What is one benefit and one cost to whales of using sound to communicate underwater?

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Textbook Question

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. Researchers followed tagged blue whales to observe how they respond to simulated military sonar—using sound levels much lower than those typically used during military exercises. Analyze the sample of data below for one individual blue whale and summarize the behavioral effect of the sound exposure.

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Textbook Question

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. Predict why the whale foraged at a depth of 100–170 m. a. The whale learned to forage at this depth from its mother. b. The whale had an innate instinct to feed at this depth. c. The whale's food was most plentiful at this depth. d. The whale could not dive any deeper than this depth.

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Textbook Question

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. The researchers also measured the speed and direction of whale swimming in response to the sound exposure. Whales increase their speed and swim away from the direction of sound. Design a study to test the hypothesis that this behavior leads to beach strandings. Note that you will not receive permission to conduct the study if your actions are likely to cause strandings to occur.

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Textbook Question

Mass strandings of whales occur on beaches near military exercises where sonar is used, raising concerns about the effects of human-generated underwater sounds on animal behavior. Scientists are collecting behavioral data on several species of whales to find out how sonar affects them. There are debates about what action the military should take to avoid harming the whales. How could you apply cost–benefit analysis to address this problem?

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