Exam 35: Behavioral Adaptations to the Environment

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An insectivorous bird has the choice of eating (1) meadow beetles, which are abundant and large but expose the bird to hawk predation, (2) under-a-rock beetles, which are large and fatty but hard to obtain, or (3) under-a-leaf beetles, which are easy to obtain but small. The bird has nestlings to feed. As an optimal forager, it will

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D

Many rats were tested for their ability to learn to navigate a maze. The average number of errors, for a total of 14 trials, was 64 per rat. The rats that made the fewest errors were bred to each other, and the offspring were tested in a similar way. This process was repeated for seven generations, at which point the average number of errors for 14 trials was 36. This experiment demonstrates that

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The evolutionary explanations for behavior are called the

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A big difference between social learning and imprinting is that

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The herbicide atrazine is a known endocrine disruptor to the development stages of several animal species, including fish, reptiles, and amphibians. Scientists interested in studying long-term effects of exposure to atrazine on mating behaviors compared an all-male population of sexually mature African clawed frogs (Xenopus laevis) exposed to atrazine (Atz) to a sexually mature population of African clawed frogs not exposed to atrazine (Con). Amplexus is defined as the mating position of frogs. The herbicide atrazine is a known endocrine disruptor to the development stages of several animal species, including fish, reptiles, and amphibians. Scientists interested in studying long-term effects of exposure to atrazine on mating behaviors compared an all-male population of sexually mature African clawed frogs (Xenopus laevis) exposed to atrazine (Atz) to a sexually mature population of African clawed frogs not exposed to atrazine (Con). Amplexus is defined as the mating position of frogs.    -Part A demonstrated that -Part A demonstrated that

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Which behavior is an example of agonistic behavior?

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The certainty of paternity is greatest in organisms that

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What type of behavior is illustrated by the bird in this figure? What type of behavior is illustrated by the bird in this figure?

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The herbicide atrazine is a known endocrine disruptor to the development stages of several animal species, including fish, reptiles, and amphibians. Scientists interested in studying long-term effects of exposure to atrazine on mating behaviors compared an all-male population of sexually mature African clawed frogs (Xenopus laevis) exposed to atrazine (Atz) to a sexually mature population of African clawed frogs not exposed to atrazine (Con). Amplexus is defined as the mating position of frogs. The herbicide atrazine is a known endocrine disruptor to the development stages of several animal species, including fish, reptiles, and amphibians. Scientists interested in studying long-term effects of exposure to atrazine on mating behaviors compared an all-male population of sexually mature African clawed frogs (Xenopus laevis) exposed to atrazine (Atz) to a sexually mature population of African clawed frogs not exposed to atrazine (Con). Amplexus is defined as the mating position of frogs.    -Supposed additional tests conducted on these two groups of frogs indicated that atrazine-treated frogs have lower fertility rates than nontreated frogs, even though both groups have adequate sperm content. What might be concluded about long term-effects of atrazine? -Supposed additional tests conducted on these two groups of frogs indicated that atrazine-treated frogs have lower fertility rates than nontreated frogs, even though both groups have adequate sperm content. What might be concluded about long term-effects of atrazine?

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A student is studying and someone turns on a stereo in the background; this breaks the student's concentration. However, as the stereo continues to play, the student begins to study successfully without broken concentration. The student is demonstrating

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Scientists were interested in studying differences in the frequency of foraging behaviors demonstrated in two species of flycatchers (birds) in California. They were specifically interested in determining if the overall distribution of foraging behaviors was associated with the stage of the breeding cycle of the two species. Here are some of the data collected: The number of foraging behaviors observed by stage of the breeding cycle for Hammond's and Western flycatchers in northwestern California Stage of Breeding Cycle Bird Species Hammond's Flycatcher Western Flycatcher Foraging Behavior Flycatch Hover-glean Glean Flycatch Hover-glean Glean Pre-incubation Incubation Brooding Post-Brooding 10 45 47 20 32 93 90 87 0 2 3 0 17 38 80 53 121 213 210 234 4 4 1 4 Source: Noon, B. R., and Sakai, H. F. (1990). Variation in the foraging behaviors of two flycatchers: associations with stage of the breeding cycle. Studies in Avian Biology, 13: 237-44. -Which foraging behavior-species combination showed the greatest range of number of foraging behaviors?

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Human social behavior appears to be

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A researcher is investigating the ability of salmon to migrate thousands of miles in the ocean yet return to spawn to the exact location where they were hatched. Data from experiments suggest that more than one type of homing mechanism may be involved in this behavior. When salmon arrive at a river mouth from the open sea, they appear to use olfactory cues to find their home streams, but how do they find their way back to the correct hatching spot along the coastline from the open ocean? Several experiments were carried out to test the hypothesis that geomagnetic factors (the influence of Earth's magnetic field) play a key role in the ability of salmon to find the correct hatching location along the coast. In one such experiment, salmon hatched in Ketchikan, Alaska were subjected to the geomagnetic characteristics of a different location on the Alaska Peninsula, Cold Bay. The fish were then released to determine to which of the two locations they would return to spawn. -If the salmon return to spawn at Cold Bay, the behavior involved is primarily ________, but if they return to Ketchikan, the behavior is primarily ________.

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Scientists were interested in studying differences in the frequency of foraging behaviors demonstrated in two species of flycatchers (birds) in California. They were specifically interested in determining if the overall distribution of foraging behaviors was associated with the stage of the breeding cycle of the two species. Here are some of the data collected: The number of foraging behaviors observed by stage of the breeding cycle for Hammond's and Western flycatchers in northwestern California Stage of Breeding Cycle Bird Species Hammond's Flycatcher Western Flycatcher Foraging Behavior Flycatch Hover-glean Glean Flycatch Hover-glean Glean Pre-incubation Incubation Brooding Post-Brooding 10 45 47 20 32 93 90 87 0 2 3 0 17 38 80 53 121 213 210 234 4 4 1 4 Source: Noon, B. R., and Sakai, H. F. (1990). Variation in the foraging behaviors of two flycatchers: associations with stage of the breeding cycle. Studies in Avian Biology, 13: 237-44. -Suppose that Hammond's flycatchers tend to forage as individuals while Western flycatchers tend to forage in groups. Which prediction is most reasonably related to foraging costs?

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In a study on human mate choice, researchers found that daughters choose mates who look like their fathers. To determine whether daughters choose mates who are genetically similar to them, the mate choices of adopted daughters were analyzed. Independent judges determined that adopted daughters chose mates with facial similarities to their adoptive father. This influence of parental image on mate choice could be considered a human example of

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Pecking order in chickens is an example of

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During the spring, male sage grouse gather in an open area and strut about, erecting their feathers in a fanlike display. They also make booming sounds using their inflated air sacs. The function of this dance is to

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What type of behavior would explain the ability of the salmon to return to their home streams?

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From a sociobiological perspective, altruism is a behavior that

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Which piece of information is communicated by courtship displays?

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