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- To relate: "The evolution of natural selection and the evolution of features that reduces the competition increases a population's overall fitness" to character displacement and resource partitioning in Darwin's finches.Behavior influences how organisms experience the environment and thus patterns of natural selection on behavioral traits. Which of the following examples is consistent with this statement? Some lizards in complex tropical forests prefer to hang out on tree trunks and branches, rather than the ground substrate, which has resulted in selection for shorter relative limb length and toe pads that can cling to bark. Ground-burrowing mammals experience greater exposure to dust and increased selection on their respiratory system to filter these particulates. Specialist parasitoids only target a handful of different host/prey types, resulting in a predictable resource and less selection on the ability to learn new resources All of the above Imagine that scientists have just discovered a weird new marine tunicate at extreme depths of the ocean. They have a novel kind of neurotransmitter – maritonin – that binds to the “maritonin” receptor, which is permeable to negatively charged iodine ions…Territoriality behaviors actually decrease competition between members of the same species. Explain why this is the case, and therefore how territoriality is favored by natural selection.
- Ecology regarding sexual selection: In zebra finch females prefer males who have a larger yellow cheek patch. Researchers investigating this preference think that females must benefit from choosing males with large cheek patches. Provide three hypotheses regarding the direct, or indirect benefits, she might receive.Read this quote from Charles Darwin (from Origin of Species). What is he describing? "Thus, I can understand how a flower and a bee might slowly become, either simultaneously or one after the other, modified and adapted to each other in the most perfect manner, by the continued preservation of all the individuals which presented slight deviations of structure mutually favorable to one another." An interaction network. A predator/prey cycle. O Coevolution. An obligate mutualism.Territoriality behaviors actually decrease cometition between members of the same species. Explain why this is the case, and therefore how territoriality is favored by natural selection.
- Define predation and describe the effects of natural selection on predator–prey relationshipsA behavioral ecologist is likely to study which of the following? Female mate choice and its relation to tail length in widowbirds Dominance relationships among chimpanzees: O All of these answers represent possible areas of behavioral ecology. O Division of labor in a honeybee colony.With respect to the Lotka-Volterra predator-prey model, which of the following statements is most likely true? Under this model, it is possible for a predator to drive its prey to extinction. All of the statements are true. Non of the statements is true. This model predicts neutrally-stable predator-prey cycles, as opposed to a stable equilibrium. O In this model, an increase in searching efficiency (a) will increase the maximum prey population.
- a. Which characteristic found in the prey species is most likely to be advantageous for survival? Why? What environmental factors might influence this? b. Which characteristic was the most successful for each of the predator and the prey populations? What was the selective pressure that allowed this characteristic to be successful? Remember that selective pressures are external factors, either environmental or from a different population. Predator Characteristic: Prey Characteristic: c. For both predator and prey populations, which characteristic was the least successful? What was the selective pressure? Predator Characteristic: Prey Characteristic:Similar ranges for eastern gray amd red squirrels. Both fed a variety of nuts. This is example of interference competition through.... allelopathy preemption territoriality or. Resource competitionThinking about the Lotka-Volterra predator-prey model, what effect should an increase in searching efficiency (a) have on the maximum prey population? Increase Decreasė No change < Previnus V Finish