Business
Engineering
Math
Science
Social Science
Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
Testing Biological Control Biological control agents are used to battle red imported fire ants. Researchers have enlisted the help of Thelohania solenopsae, a natural enemy of the ants. This microsporidian (Section 23.4) is a parasite that infects ants and shrinks the ovaries of the colony's egg-producing female (the queen). As a result, a colony dwindles in numbers.
Are these biological controls useful against imported fire ants? To find out, USDA scientists treated infested areas with either traditional pesticides or pesticides plus biological controls (both flies and the parasite). The scientists left some plots untreated as controls. FIGURE 45.16 shows the results.
FIGURE 45.16 A comparison of two methods of controlling red imported fire ants. The graph shows the numbers of red imported fire ants over a 28-month period. Orange triangles represent untreated control plots. Green circles are plots treated with pesticides alone. Black squares are plots treated with pesticide and biological control agents (parasitoid flies and a microsporidian parasite).
How did population size in the two types of treated plots change during this same interval?
To determine: The changes in the population size of two types of treated plots in the same interval.
Introduction: Biological control agents are the natural enemies like predation, parasitism, and other methods that are used to control the pests like weeds, insects, mites, nematodes, and so on in order to generate a pest-free- yields. The biological control agent such as Thelohania solenopsae is a natural enemy of the red imported fire ants. This microsporidian can decline the ant’s colony by infecting and shrinking the ovaries of the queen which are the female reproducing ants.
The USDA scientists conducted a study by treating the infected area by using the traditional pesticides and pesticides with biological controls. They kept some plots as controls that are untreated. They observed that the red imported fire ants over a period of 28 months.
Refer Fig. 45.16, “A comparison of two methods of controlling red imported fire ants” in the textbook. The graphical representation shows the percentage of the number of ants versus the months of treatment. The orange triangle indicates the control plots that are untreated...
Chapter 45 Solutions
Additional Science Solutions
Find more solutions based on key concepts
Show solutions addVISUALIZE Draw a diagram showing the main components of the CNS and the main components of the PNS.
Biology (MindTap Course List)
List the important controls of temperature variation and distribution over Earths surface. Which control is mos...
Fundamentals of Physical Geography
Balance the following equations. a Sn + NaOH Na2SnO2 + H2 b Al + Fe3O4 Al2O3 + Fe c CH3OH + O2 CO2 + H2O d P...
General Chemistry - Standalone book (MindTap Course List)
For an angle measured from the positive x-axis, the values of sin and cos are always (choose one): (a) great...
College Physics
A person who is setting goals in preparation for a behavior change is in a stage called Precontemplation. T F
Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)
a. There are 365 days/year, 24 hours/day, 12 months/year, and 60 minutes/hour. How many minutes are there in on...
Introductory Chemistry: A Foundation
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Que...
Inquiry into Physics
A 20.0L stainless steel container at 25C was charged with 2.00 atm of hydrogen gas and 3.00 atm of oxygen gas. ...
Chemistry: An Atoms First Approach
Calculate your BMI and determine whether you are underweight, healthy weight, overweight, or obese. If your BMI...
Understanding Nutrition (MindTap Course List)
Certain criteria must be satisfied if a measurement or observation is to be believed. Will the criteria necessa...
College Physics
Round the following numbers to four significant figures. (a) 3.1415926 (b) 0.00690745 (c) 483.5960 (d) 0.023497...
An Introduction to Physical Science
In Groups 4A-6A, there are several elements whose symbols begin with S. Name these elements, and for each one g...
Chemistry & Chemical Reactivity
36. Write a set of nuclear equations to represent the series of decays that transforms Ra-228 into Rn-220. The ...
Chemistry In Focus
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a su...
Biology: The Dynamic Science (MindTap Course List)
We are following the progress of human chromosome 1 during meiosis. At the end of prophase I, how many chromoso...
Human Heredity: Principles and Issues (MindTap Course List)
Plasma fluid filtered into Bowmans capsule flows directly into the ________. a. renal artery c. distal tubule b...
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
______tissue detects and integrates information about changes and controls a. Muscle b. Nervous c. Connective d...
Human Biology (MindTap Course List)
9-15 In each pair, tell which isotope is more likely to be radioactive: (a) Nitrogen-14 and nitrogen-13 (b) Pho...
Introduction to General, Organic and Biochemistry
20. At end-expiration, is A. 0 mm Hg. B. 2 mm Hg. C. 4 mm Hg. D. 6 mm Hg.
Cardiopulmonary Anatomy & Physiology
6.64 Arrange the following atoms in order of increasing ionization energy: Li, K, C, and N.
Chemistry for Engineering Students
Describe the physiological changes that occur during the adult years. How do those changes relate to the contin...
Nutrition Through The Life Cycle
Why is there a lower limit to the mass of a main-sequence star?
Horizons: Exploring the Universe (MindTap Course List)
32. A rooftop in the southwestern United States receives an average solar power of W (averaged over both day a...
Chemistry In Focus
A sample of H2C2O4.2H2O of mass 3.35 g is heated to drive off the waters of hydration (designated separately in...
Chemistry for Engineering Students
For the system PCl5(g)PCl3(g)+Cl2(g)K is 26 at 300C. In a 1.0-L flask at 300C, a gaseous mixture consists of al...
Chemistry: Principles and Reactions
Distinguish between irreversible and reversible enzyme inhibition.
Chemistry for Today: General, Organic, and Biochemistry
Nitric oxide, , is known to break down ozone, , by the following bimolecular reaction: If the activation energ...
Physical Chemistry
____ Which of the following foods should women not consume during pregnancy? a. Fish b. Broccoli c. Raw sprouts...
Nutrition Through the Life Cycle (MindTap Course List)
The sex hormone estrone has been synthesized by a route that involves the following step. Identify the pericycl...
Organic Chemistry
Explain how excluding the harmful environmental and health costs of production from the prices of goods and ser...
Environmental Science (MindTap Course List)
The diameter of a sphere is measured to be 5.36 in. Find (a) the radius of the sphere in centimeters, (b) the s...
College Physics
Define natural capital. Define natural resources and ecosystem services, and give two examples of each. Give th...
Environmental Science (MindTap Course List)
A 90.0-kg fullback running east with a speed of 5.00 m/s is tackled by a 95.0-kg opponent running north with a ...
Physics for Scientists and Engineers
Using VSEPR theory, predict the molecular geometry of the following molecules. a. NCl3 b. SiCl4 c. H2Se d. SBr2
General, Organic, and Biological Chemistry
True or false? All traits are inherited in a Mendelian pattern.
Biology: The Unity and Diversity of Life (MindTap Course List)
Switch S shown in Figure P28.71 has been closed for a long lime, and the electric circuit carries a constant cu...
Physics for Scientists and Engineers, Technology Update (No access codes included)
In the dihydroxyacetone phosphateglycerol 3-phosphate shuttle system, what molecule crosses the outer mitochond...
Organic And Biological Chemistry
