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Spring 2009 Study Questions

Spring 2009 Study Questions - EEB100 Behavior Study...

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EEB100 Behavior Study Questions Page 1 of 5 Study Questions Behavior Questions with asterisks have answers in the accompanying key. 1. *For the following hypotheses, state whether they are proximate: sensory motor, proximate: genetic/developmental, ultimate: historical/phylogenetic, or ultimate: adaptive utility. a. The brightness of male breeding plumage is affected by the number of parasites. b. Ducklings can only undergo filial imprinting during the first two weeks after hatching. c. Search image formation increases the foraging efficiency of consumers d. Human fear of snakes is instinctual. e. The complex mating song of lyrebirds signals the quality of their genes to females. f. Eusociality has evolved multiple times in the hymenopterans (bes, wasps, and ants). g. Territorial behavior in African lizards is correlated with testosterone level. h. Female lions synchronize fertile periods to create coalitions that can care for cubs cooperatively. 2. Infanticide by male hanuman langurs has been hypothesized to aid the langur group by reducing competition for resources. Explain why group selection such as this are not in general compatible with natural selection. What alternative hypothesis has evidence for it? 3. Explain how noctuid moths sense and respond to bats. How does this demonstrate stimulus filtering? 4. You observe that male brids emit calls in the 7kh range. On a graph showing threshold response of the neurons of female birds to sound power, assuming they are not reacting to other sounds. 5. Below is a picture of a naked mole rat and its cortical map. If you examined the brain of a naked mole rat, which body parts would have the greatest amount of brain tissue devoted to their sensory inputs? 6. Describe the difference between activational and organizational effects of hormones. Give an example of each. 7. You hypothesize that testosterone in squid influences their ability to display to females for mating, and that squid with higher testosterone levels display more frequently to females. Design experiments to comprehensively test this hypothesis (hint it will take three experiments).
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EEB100 Behavior Study Questions Page 2 of 5 8. *The hormone prolactin has been hypothesized to play a function in parenting behavior. While studying mauve warblers, you observe variation in male parental care, and suspect that increased male parental care is driven by higher prolactin levels. a. Design an study to comprehensively test this hypothesis (hint: it will involve three experiments) b. What type of hypothesis is this (e.g. proximate- sensory/motor)? c. Another researcher hypothesizes that male parental care is advantageous is environments with more predators, because the males provide extra protection to the young. Are the hypotheses mutually exclusive? Why or why not? 9.
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Spring 2009 Study Questions - EEB100 Behavior Study...

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