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Summoning Moaquitoes Parasites sometimes alter their host’s behavior in a way that increase their chances of transmission to another host. Dr. Jacob Koella and his associates hypothesized that Plasmodium might benefit by making its human host more attractive to hungry mosquitoes when gametocytes are available in the host’s blood. Gametocytes taken up by the mosquito will mature into gametes and mate inside its gut. To test their hypothesis, the researchers recorded the response or mosquitoes to the odor or Plasmodium -infected children and uninfected children over the course of 12 trials on 12 separate days. FIRGURE 21.18 shows their results. FIGURE 21.18 Attracting mosquitoes . The graph shows that the number of mosquitoes (out 100) attracted to uninfected children, children harboring the aseoual stage of Plasmodium, and children with gametocytes in their blood. The bars show the average number of mosquitoes attracted to that category of child over the course of 12 separate trials. What percentage of the total number of mosquitoes were attracted to the most attractive group?

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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 21, Problem 3DAA
Textbook Problem
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Summoning Moaquitoes Parasites sometimes alter their host’s behavior in a way that increase their chances of transmission to another host.

Dr. Jacob Koella and his associates hypothesized that Plasmodium might benefit by making its human host more attractive to hungry mosquitoes when gametocytes are available in the host’s blood. Gametocytes taken up by the mosquito will mature into gametes and mate inside its gut.

To test their hypothesis, the researchers recorded the response or mosquitoes to the odor or Plasmodium-infected children and uninfected children over the course of 12 trials on 12 separate days. FIRGURE 21.18 shows their results.

Chapter 21, Problem 3DAA, Summoning Moaquitoes Parasites sometimes alter their hosts behavior in a way that increase their

FIGURE 21.18 Attracting mosquitoes. The graph shows that the number of mosquitoes (out 100) attracted to uninfected children, children harboring the aseoual stage of Plasmodium, and children with gametocytes in their blood. The bars show the average number of mosquitoes attracted to that category of child over the course of 12 separate trials.

What percentage of the total number of mosquitoes were attracted to the most attractive group?

Summary Introduction

To determine: The percentage of the total number of mosquitoes that were attracted to the most attractive group.

Concept introduction: Plasmodium is one among the genus of unicellular eukaryotes that are obligate parasites of vertebrates and the insects. They infect the humans and are responsible for most malarial infections. It is transmitted through the bite of female anopheles mosquito. The life cycle involves the mosquito and human as the host. When they feed on the human blood, the malaria infected mosquito inoculates the sporozoites into the human host. The sporozoite infects the liver cells and matures into schizonts that rupture and release the merozoites.

Explanation of Solution

The study shows that the mosquitoes are more attracted to the children having gametocytes in their blood. Total 100 mosquitoes were taken for the study...

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