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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. Which group of children averaged the fewest mosquitoes attracted?
Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
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.
Which group of children averaged the fewest mosquitoes attracted?
To determine: The group of children averaged the fewest mosquitoes attracted.
Concept introduction: Plasmodium is one among the genus of unicellular eukaryotes that are obligate parasites of vertebrates and the insects. They infect the humans who are mostly prone to malarial infection. It is transmitted through the bite of a female anopheles mosquito. The life cycle involves mosquito and humans as a host. During the blood meal, the malaria-infected mosquito inoculates the sporozoites into the human host. The sporozoite infects the liver cells and mature into schizonts that rupture and release the merozoites.
Explanation of Solution
The graph shows the number of mosquitoes (out of 100) attracted to the children who are uninfected, harbor asexual stage of plasmodium, and those children with gametocytes in their blood. The group of children who are uninfected and the children with the asexual stage are less attracted by the mosquitoes...
Chapter 21 Solutions
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