EP CONNECT ONLINE ACCESS FOR BIOLOGY
20th Edition
ISBN: 9781260494655
Author: Raven
Publisher: MCG COURSE
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Textbook Question
Chapter 53, Problem 4IQ
What factors might be responsible for the slight difference in peak prey length relative to the length optimal for maximum energy gain?
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Which of the following statements about functional response curves is FALSE?
O Under Type 3 curves, food intake increase slowly at the lowest prey densities
O Type 2 curves can arise when there is substantial handling time involved in capturing and eating prey.
O Type 1 curves are the most common found in nature.
O For all functional response curves, food intake becomes limited by internal factors at high prey densities.
Great white sharks prefer marine mammals like seals but can eat a number of other prey items, including birds and fish. According to the table below, what is the critical search time for seals, above which great white sharks should choose to eat an albatross if they encounter one?
Prey item: seal (energy = 60 Mcals, handling time = 5 minutes)
Prey item: albatross (energy = 10 Mcals, handling time = 2 minutes)
If the rate of some process is governed by the abundance of prey individuals, we say that it is prey-dependent. Give some examples of prey-dependent processes.
Chapter 53 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY
Ch. 53.1 - Prob. 1LOCh. 53.1 - Prob. 2LOCh. 53.1 - Prob. 3LOCh. 53.2 - Prob. 1LOCh. 53.2 - Prob. 2LOCh. 53.3 - Prob. 1LOCh. 53.3 - Prob. 2LOCh. 53.3 - Prob. 3LOCh. 53.4 - Prob. 1LOCh. 53.4 - Prob. 2LO
Ch. 53.4 - Prob. 3LOCh. 53.5 - Prob. 1LOCh. 53.5 - Prob. 2LOCh. 53.5 - Prob. 3LOCh. 53.6 - Prob. 1LOCh. 53.7 - Define migration.Ch. 53.7 - Prob. 2LOCh. 53.7 - Prob. 3LOCh. 53.8 - Prob. 1LOCh. 53.8 - Prob. 2LOCh. 53.8 - Prob. 3LOCh. 53.9 - Prob. 1LOCh. 53.9 - Prob. 2LOCh. 53.10 - Prob. 1LOCh. 53.10 - Prob. 2LOCh. 53.11 - Prob. 1LOCh. 53.11 - Prob. 2LOCh. 53.11 - Prob. 3LOCh. 53.12 - Prob. 1LOCh. 53.12 - Prob. 2LOCh. 53.12 - Prob. 3LOCh. 53.13 - Prob. 1LOCh. 53.13 - Prob. 2LOCh. 53.13 - Prob. 3LOCh. 53 - Prob. 1DACh. 53 - Prob. 2DACh. 53 - Prob. 3DACh. 53 - Prob. 4DACh. 53 - Prob. 5DACh. 53 - Prob. 1IQCh. 53 - Prob. 2IQCh. 53 - Prob. 3IQCh. 53 - What factors might be responsible for the slight...Ch. 53 - Prob. 1UCh. 53 - Prob. 2UCh. 53 - The study of song development in sparrows showed...Ch. 53 - Prob. 4UCh. 53 - Prob. 5UCh. 53 - Prob. 6UCh. 53 - Prob. 7UCh. 53 - Prob. 8UCh. 53 - In the haplodiploidy system of sex determination,...Ch. 53 - Prob. 10UCh. 53 - Prob. 11UCh. 53 - Prob. 1ACh. 53 - Refer to figure 54.25. Six pairs of birds were...Ch. 53 - Prob. 3ACh. 53 - Prob. 1SCh. 53 - Behavioral genetics has made great advances from...Ch. 53 - If a female bird chooses to live in the territory...
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- Why would runners have a lower production efficiency when running along-distance race than when they are sedentary?arrow_forwardWhen determining whether to feed on small, medium, or large prey, why should predators evaluate both the energy obtained from each prey item, the abundance of each prey item, and the handling time of each prey item?arrow_forwardDraw and label graphs (including zero-growth isoclines) showing the predicted behavior of the Lotka-Volterra predator/prey equations if we assume prey growth follows and exponential growth model. Show how the graphs would change of the prey follow a logistic growth model.arrow_forward
- Why is functional response to prey density important in ecological research?arrow_forwardOptimal foraging theory can make predictions about an animal’s food choice. Which of the following is the most accurate statement about optimal diet breadth as resource quality, handling time and distribution changes? As handling time increases, animals should specialize As the distance between resources increases, animals should generalize As the energy content of the resources increases, animals should generalize As the distance between patches increases, animals should stay longer in a patch The following diagrams show four distribution patterns of resources. Each circle represents one unit of a resource, say, a food item. For which of these distributions would the Marginal Value Theorem be useful for making predictions about optimal foraging behavior. (Shown in image)arrow_forwardWhat is assimilation efficiency? How/why would assimilation efficiency differ for herbivores eating grass, herbivores eating seeds, and carnivores eating herbivores?arrow_forward
- What are the advantages of utilizing non-conventional feedstuffs in animal feeding?arrow_forwardPlease show work on paper and draw the graph on paper pleasearrow_forwardInterpret the following graphs: In the graphs, the number of days are 18.. 1 day is equal to 60 sec. For the first graph, days are taken on x-axis. The mean foraging times are taken on y-axis. For the 2nd graph, percentage of prey caught during first half of winter(1-6days) were taken on x-axis and percentage of prey caught during 2nd half of winter(7-12days) were taken on y-axis.arrow_forward
- interpret the following graph: In the graph, the number of days are 18.. 1 day is equal to 60 sec. days are taken on x-axis. The mean foraging times are taken on y-axis.arrow_forwardYou are studying the diet of American bison. You gather the data in the graph below on the effort bison invest (gray bars, left hand Y-axis) in obtaining different types of grass (X-axis) and the energy content in calories of the grasses (white bars, right hand Y-axis). According to these data, which type of grass would optimal foraging theory predict bison choose? Handling time (seconds) Grama Broma 30 Fescue 20 10 Bluestem Fescue Switchgrass Bluestem Grama Switchgrass Broma 9 6 3 0 (Calories) Energy contentarrow_forwardAccording to optimal foraging theory.. organisms will have a tendency to select the smallest prey available if they are common, rather than exert more energy in capturing larger prey. predators will always maximize their rate of energy gain when they forage for more than 1 prey type. an organism can gain unlimited resources if it invests more energy into increasing its food intake. a predator will include prey with high handling times in their diet as long as their energy of rate intake increases.arrow_forward
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