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
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).
If this study had ended after the first year, would you conclude that biological controls had a major effect?
Want to see the full answer?
Check out a sample textbook solutionChapter 45 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
- Question 1 Why have the majority of viruses evolved to bind to a host surface receptor that serves an essential function in the host cell? This is completely accidental. These host receptors are poorly protected by the adaptive immune system, making them an easy target for the virus. O Because proteins that perform essential functions are located only on the surface of the host cell. O Host surface receptors that are essential for the host will always be expressed and present on the host.arrow_forwardA question about feedback mechanism and homeostasis: It's been a year since covid-19 pandemic affected the country in your family. How does your body reacted in order to maintain the balance and keep you from being infected and survive?arrow_forwardPlease help explain this figurearrow_forward
- What two fluorescent proteins would be least appropriate to use to visualize co-localization of two fusion proteins within a cell using fluorescence microscopy? Excitation and Emission Spectra of High-Performance Anthozoa Fluorescent Proteins 100 (a) 100 (b) 5 80 80 60 60 40 40 운 20 20 350 400 450 500 550 600 650 450 500 550 600 650 700 Excitation Wavelength (nm) Emission Wavelength (nm) TagBFP MTFP1 - Azami Green - TagBFP MTFP1 -Azami Green -TagYFP O mKO - mCherry - mPlum - TagYFP - mKO - mCherry mPlum Figure 7 O Tag BFP and mPlum Azami Green and TagYFP O TagYFP and mCherry O All of the combinations would work O TagBFP and mKO Nomalized Absorptionarrow_forwardWhen grown in ordinary garden soil and watered normally, a plant engineered to express green fluorescent protein will glow in the dark,whereas a plant engineered to express firefly luciferase will not. Explainthese observations.arrow_forwardI recived 16/20 on this portion of my assigment. My professor said "Right idea, use Lineweaver-Burk to calculate the new KM and Vmax and compare to the originals. Should be noncomp (Vmax changes, but not KM). For part b, good based on above answer." Please help me understand this problem ebtter by re-do, re-explain, re-calculate the answer below base on the comment made. And be sure to adjust any other answers that were affected by your corrections. For example,Part B is base on Part A answer.arrow_forward
- 29. Students of a STEM section conducted a yeast fermentation lab on their General Biology 1 class. Each group were assigned different setups. Only the setups with dissolved yeast and sugar in warm water were able to note a difference in increasing balloon size. A conclusion question was raised at the end of the activity. Which of the following conclusions can be deemed CORRECT based on the results that can be gleaned from the laboratory activity? A. when yeast acts on sugar, it breaks it down releasing air that fills up the balloon B. when yeast breaks down sugar, it releases carbon dioxide that fills up the balloon C. when yeast breaks down sugar, it releases oxygen that fills up the balloon D. when yeast acts on sugar, it breaks it down releasing vapor that fills up the balloonarrow_forwardA Cure for Beriberi In 1887, a strange nerve disease attacked the people in the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite. Victims often died of heart failure. Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from the blood patients with beriberi. The injected chickens became sick. However, those groups of chickens that were not injected with bacteria also became sick.One of the scientists, Dr. Eijkman, noticed something. Before the experiment, all chickens had eaten whole grain rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman researched this interesting case. He found that polished rice lack thiamine, a vitamin necessary for good health. Questions:1. What was the observation?2. What was the hypothesis?3. How was the hypothesis tested?4. What was the result of the experiment?5. What conclusion could be drawn?6. Which of…arrow_forwardYou are growing up myoblasts, C2C12 cells, to use in a myogenic study. You are using T-150 flasks with a culture area of 150 cm^2 and when confluent contains 2 x 10^7 cells. Question: You seed a culture at 8 am on Monday with 5 x 10^5 cells. Assume all survive, a generation time of 18 hours and all cells are actively dividing. When would you expect them to be confluent? A) 7:24 AM on Saturday B) 8 pm on Tuesday C) 8 am on Tuesday D) 9 pm on Thursday E) 12:48 pm on Wednesday F) They won't grow that longarrow_forward
- Question 37 Which are the FIVE main series of "apoA, apoB, apoC, apoD, and apoE" "apoA, apo(a), apoB, apoC and apoE" "apoA, apoB, apoC, apo E, and apoL" "apoB, apoC, apoD, apoE and apoM" apoproteins that have been identified?arrow_forwardNutritional requirements of white verses red yeast What is the differences in the ability of different strains to grow on different mediums. Propose a hypothesis that helps to explain the presence of red yeast colonies. Why it is more common for cells to be killed by UV light than to become red. Hint: think about how mutagenesis occurs.arrow_forwardImagine a sealed terrarium containing a plant and a beetle. How does each organism provide resources for the other? Could each organism survive if it was, the only living thing in the terrarium? Why or why not?arrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax