Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 53, Problem 16TYU
SYNTHESIZE YOUR KNOWLEDGE
Locusts (grasshoppers in the family Acrididae) undergo cyclic population outbreaks, leading to massive swarms such as this one in the Canary Islands, off the west coast of Africa. Of the mechanisms of density-dependent regulation shown in Figure 53.18, choose the two that you think most apply to locust swarms, and explain why.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
In a habitat there are 7,500 individuals of P. rufipes, 40% of which have long and thin ovipositors and 60% have short and thick ovipositors. During a single year 250 wasps with long and thin ovipositors died while 325 were born. In that same year, 650 wasps with short, thick ovipositors were born and 800 died. Calculate the per capita growth rate (r) of the two subpopulations of P. rufipes.
Per capita growth rate of P. rufipes with long and thin ovipositors: _________
Per capita growth rate of P. rufipes with short and thin ovipositors: _________
Using the equation for R0, explain how transmission rate, host population size, virulence, and recovery rate affect a parasite’s fitness. Can you relate the equation for R0 to a diagram of a SIR model? How does R0 relate to dI/dt?
Draw on one graph, with N2 on the y-axis and N1 on the x-axis, the isoclines for the twocompetitors with the carrying capacities and competition coefficients listed below. Will thesespecies coexist? If not, which species will win? Competitor 1 Competitor 2
K1 = 200, α12 = 0.4 K2 = 400, α21 =1
Chapter 53 Solutions
Campbell Biology (10th Edition)
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Prob. 1CC
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 3CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - Prob. 2CCCh. 53.6 - Prob. 3CCCh. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Prob. 5TYUCh. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - Prob. 8TYUCh. 53 - During exponential growth, a population always (A)...Ch. 53 - Which of the following statements about human...Ch. 53 - Prob. 11TYUCh. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - Prob. 14TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- You visit a medium-sized Caribbean island and identify 4 species of anole lizard. Consider the 3 possible scenarios below. You return to the island a number of years after each of these scenarios. Explain which outcome below (i to iii) you expect for each scenario and briefly justify your prediction. 3-4 sentences for each scenario. (i) An increase in the number of anole species (ii) A decrease in the number of anole species (iii) No change in the number of anole species A) Scenario A: Scenario A: A new virus is introduced, which causes all the anoles to become colour blind. B) Scenario B: An earthquake separates the island into two islands. C) Scenario C: An invasive herbivorous insect species is introduced to the island, which devastates many plant species and causes the habitat to become much less complex.arrow_forwardSuppose that researchers wanted to examine the combined effects of an introduced predator (a trout) and the trematode parasite Ribeiroia on amphibian populations. To do this, they established frog populations in each of 40 artificial ponds. Each pond was assigned at random to one of four treatments (10 ponds per treatment): 1) neither trout or parasites were added to the pond (the "No trout, no parasite" treatment); 2) no trout were added but parasites were added ("No trout, parasite added"); 3) trout were added but parasites were not added ("Trout added, no parasite"); and 4) both trout and parasites were added ("Trout added, parasite added"). Each pond contained refugia where tadpoles could avoid attack by trout, to avoid fish predators driving frog populations to extinction in an artificial pond, unlike what typically occurs in a natural pond. After two breeding seasons, the researchers estimated the density of frogs in each pond. The results are shown in the table and the figure.…arrow_forwardYou visit a medium-sized Caribbean island and identify 4 species of anole lizard. Consider the 3 possible scenarios below. You return to the island a number of years after each of these scenarios. Explain which outcome below (i to iii) you expect for each scenario and briefly justify your prediction. (2-3 sentances) (i) An increase in the number of anole species (ii) A decrease in the number of anole species (iii) No change in the number of anole species Scenario A: Scenario A: A new virus is introduced, which causes all the anoles to become colour blind. Scenario B: An earthquake separates the island into two islands. Scenario C: An invasive herbivorous insect species is introduced to the island, which devastates many plant species and causes the habitat to become much less complex.arrow_forward
- Q 1 Please help me Thank youarrow_forwardOaks in California are suffering from a phenomenon called sudden oak death (SOD). This has the potential to convert oak-dominated communities to communities made up of mostly grasses and smaller plants. How would this change the abundances of the tick species described in the article? Make a prediction for each of the three most abundant species, and describe the specific results in this article that justify your prediction. Article Reference: Abiotic and habitat drivers of tick vector abundance, diversity, phenology and human encounter risk in southern California By: Andrew J MacDonaldarrow_forwardPlease do by handarrow_forward
- Aphids and ants can have a mutualistic relationship. Aphids exude sugary substances that provide energy for ants and ants can defend aphid colonies from predators. This experiment measured the population growth rate of aphids vs the number of aphids at the start of the experiment on plants where ants were present or absent. Please select all the statements that are reasonable interpretations of this graph. Select all that apply. A. When starting populations are low, the presence of ants does not matter. Their importance increases with higher starting population densities. B. It appears that aphid populations founded with 12 individuals grow faster than aphid populations founded with 24 individuals when compared to each other in the same ant treatment.. C. none of the above. D. The growth of rate of aphid populations was significantly higher when tended by ants than aphid population that were not tended E. Ants seem to be necessary for small founding populations of…arrow_forwardWhich statement about the classic competition experiments involving two Paramecium species is FALSE? The experiment involved interspecific competition. The experiment involved exploitation competition. Each species, when grown alone, exhibited logistic growth. When grown together, the species exhibited logistic growth, but each reached a lower carrying capacity than when it was grown alone.arrow_forwardHoverflies use Batesian mimics (they exhibit a characteristics of a dangerous species although they are harmless species to avoid predators) of a group of stinging, yellow & black-striped bees and wasps, which are Mullerian mimics (they exhibit similar characteristics of similar species to themselves to avoid predators) of each other. Assuming predators learn to avoid yellow and black insects only through experience, draw the expected relationship between the ratio of Batesian mimics to Mullerian mimics in the community (x-axis) and the probably that mimicry will successfully protect against predation (y-axis).arrow_forward
- INTERPRET DATA Examine the top and middle graphs in Figure 54-5. Are these examples of exponential or logistic population growth? Where is K in each graph? (You may need to refer to Chapter 53 to answer these questions.) RESULTS AND CONCLUSION: The top and middle graphs show how each species of Paramecium flourishes when grown alone. The bottom graph shows how they grow together, in competition with each other. In a mixed culture, P. aurelia outcompetes P. caudatum, resulting in competitive exclusion. SOURCE: Adapted from G.F. Gause, The Struggle for Existence (Williams and Wilkins, Baltimore, 1934). Figure 54-5 G.F. Gauses classic experiment on interspecific competitionarrow_forwardIn this lesson, we explore population momentum (the time lag between a change in birth/death rates and theslowing of population growth). In Step 1, we explore the effect of changing the age of reproduction, usingNigeria as an example. You will consider the human and ecological impacts of unchecked population growth aswell as the human cost of China’s successful attempt to curb its own growth answer questionsarrow_forwardIn the greater ani (Crotophaga major) (Riehl 2011) and the acorn woodpecker (Melanerpes formicivorus) (Koenig et al. 1995), a group of females shares the same nest. However, when some females begin to lay eggs in the communal nest, their eggs are often tossed from the nest by other group members. Use a cost–benefit approach to explain why females whose eggs are destroyed still remain with the group. Do you think the egg-tossing females are really cooperating with the others in their group? Please Do not write from an online sourcearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Ecology: Interspecific and Intraspecific Interactions | Ecology & Environment | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=IiQTrA0-TE8;License: Standard YouTube License, CC-BY