[21-23] Suppose a species of frog has the option of three different prey items: crickets, cockroaches, and ants. Ants are the most abundant in the environment, with a relative abundance of 0.8. The relative abundance of cockroaches is 0.2, and the abundance of crickets is 0.1. A dietary study of frogs determines that crickets make up 50% of the diet of these amphibians, cockroaches are 40% of the diet, and ants are 10% of the diet. 21. What is the Manly-Chesson index of prey preference for crickets? Round to the nearest tenth. 22. What is the Manly-Chesson index of prey preference for ants? Round to the nearest hundredth. 23. The preference for ants is e. negative f. positive g. neutral

[21-23] Suppose a species of frog has the option of three different prey items: crickets, cockroaches, and ants. Ants are the most abundant in the environment, with a relative abundance of 0.8. The relative abundance of cockroaches is 0.2, and the abundance of crickets is 0.1. A dietary study of frogs determines that crickets make up 50% of the diet of these amphibians, cockroaches are 40% of the diet, and ants are 10% of the diet. 21. What is the Manly-Chesson index of prey preference for crickets? Round to the nearest tenth. 22. What is the Manly-Chesson index of prey preference for ants? Round to the nearest hundredth. 23. The preference for ants is e. negative f. positive g. neutral

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter20: Development Of Evolutionary Thinking

Section: Chapter Questions

Problem 12TYK

See similar textbooks

Similar questions

If Blue Whales each require 1,000kg of Krill per day to survive, and Krill have an energy density of 4,600 kJ/kg. How much of the energy contained in each kg of krill eaten by a Crabeater Seal is available to the Killer Whale that feeds on a Ross Seal? (Provide an exact figure, not a percentage.)
Feral cat in wild compared to domestic cat are they larger or same size? Feral cats are they tougher then domestic cats for predators like bobcats or raccoons or possum or skunks or weasel? If feral cat has litter how they defend the litter from predators like dogs gain pack to surrive as cats won’t?
When 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?
Decribe Brown’s large granivore experiment and what was his hypothesis (Chapter 13)? Why did Brown’s research team create controls by completely fencing study plots and then cutting holes in their sides to allow free passage of rodents into and out of the plot? Why not just compare the density of small rodents in the large granivore removal plots with their densities in the surrounding desert? Why did they look at insectivores and what did the lack of response in insectivores indicate? Why did they repeat their large granivore experiment?
Small mammalian hibernators can withstand body temperatures of 0° C to 5°C without injury. However, the body fats of most mammals have melting temperatures of approximately 25° C. Predict how the composition of the body fat of hibernators might differ from that of their nonhibernating cousins.
57. Lobster is a very valuable seafood export in Canada. The lobsters caught off the coast of Atlantic Canada make up 50% of the world lobster supply. In order to protect the lobster population from overfishing, the Government of Canada has conservation measures in place to ensure the population size is maintained. Some of the measurements include placing a limit on the number of fishing licenses issued, limiting the fishing seasons, establishing minimum and maximum lobster size limits, and protecting egg-bearing females. Fisheries and Oceans Canada regularly monitors and collects data to estimate the lobster population size.The carrying capacity of the lobster population can be best described as the Select one: a. initial bottom plateau in a logistic growth curve that demonstrates a stable population b. steep increase in an exponential growth curve that demonstrates the high biotic potential c. slow increase in a linear growth curve that demonstrates controlled and sustainable…
23) Being a top carnivore, the grizzly bear is most likely prone to extinction because of its Group of answer choices need for specialized breeding areas. fixed migratory patterns. large size. large territory
61. Which of the following would not be interpreted as an adaptation to a very dry environment?a. longer-than-normal loops of Henle in the vertebrate kidneyb. a gland that excretes a dilute salt solutionc. water-impermeable layer of wax on insect exoskeletond. enzymes that convert ammonia to uric acid 62. Which of the following statements is true about the flow of energy through the food pyramid?a. The most energy is at the top of the pyramid, with the tertiary consumers, because the energy increases at each level.b. The most energy is at the bottom of the food pyramid because some is lost as it is passed from producer to each level of consumer.c. The energy is distributed equally at each level of the pyramid; very little is lost or added moving from producers to tertiary consumers.d. Energy doesn’t flow through the food pyramid; each level receives energy from the sun.e. It depends on the ecological community; in some, there is more energy at the top of the food pyramid, and in…
Dippers (Cinclus cinclus) are small birds that can be found along fast-flowing streams in Europe and Asia. They feed on insect larvae, especially those of caddis flies (Trichoptera), which they catch by sticking their heads under water and turning over stones. Describe the relationship between the abundance of caddis fly larvae and dippers?Why, is caddis fly larva abundance expressed as ‘relative abundance’? using the data in Table 2
58. When Yellowstone National Park was created in the late 1800s, the grey wolf population was not protected, which led to the elimination of the population in 1926. In 1995, 21 wolves were reintroduced in Yellowstone National Park.Reintroducing wolves to Yellowstone National Park resulted in Select one: a. an increase in cougar population due to decreased intraspecific competition b. a decrease in cougar population due to increased intraspecific competition c. an increase in cougar population due to decreased interspecific competition d. a decrease in cougar population due to increased interspecific competition
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)
A single meal a day is enough to feed a cat. Is that premise a myth or a reality?