The Two-Sided Attack on the Spiny CactusThe spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows thedistribution of the number of spines before the introduction of collared peccaries and parasitic wasps.Spiny CactusOrganismCollared peccary(musk hog)Number of CactiParasitic wasp3002001007080Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spinycacti and these two organisms.I90 100 110 120 130Number of SpinesOrganisms Introduced into the EcosystemRelationship with Spiny Cactus PlantsThey eat spiny cactus plants that have a small number of spines.They lay eggs at the base of cactus spines. When the eggshatch, the emerging grubs dig into the interior of the cactusand eat the inner pulp of the plant, usually destroying the plant.These wasps lay eggs on spiny cactus plants that have a largenumber of spines.The number of cacti with 70 spines willspines willdue todue to. The number of cacti with 100 spines willdue toThe number of cacti with 130I The Two-Sided Attack on the Spiny CactusThe spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows thedistribution of the number of spines before the introduction of collared peccaries and parasitic wasps.Spiny CactusOrganismCollared peccary(musk hog)Number of CactiParasitic wasp3002001007080Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spinycacti and these two organisms.I90 100 110 120 130Number of SpinesOrganisms Introduced into the EcosystemRelationship with Spiny Cactus PlantsThey eat spiny cactus plants that have a small number of spines.They lay eggs at the base of cactus spines. When the eggshatch, the emerging grubs dig into the interior of the cactusand eat the inner pulp of the plant, usually destroying the plant.These wasps lay eggs on spiny cactus plants that have a largenumber of spines.The number of cacti with 70 spines willspines willdue todue to. The number of cacti with 100 spines willdue toThe number of cacti with 130I

The mentioned cacti species facing interspecific competition which plays an important role in…

-Sided Allack on the spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps Spiny Cactus Organism Collared peccary (musk hog) 300- Parasitic wasp 200 Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cact and these two organisms 100 LULU 70 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus and eat the inner pulp of the plant, usually destroying the plant. These wasps lay eggs on spiny cactus plants that have a large number of spines. The number of cacti with 70 spines will spines will due to due to The number of cacti with 100 spines will due to The number of cacti with 130

-Sided Allack on the spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps Spiny Cactus Organism Collared peccary (musk hog) 300- Parasitic wasp 200 Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cact and these two organisms 100 LULU 70 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus and eat the inner pulp of the plant, usually destroying the plant. These wasps lay eggs on spiny cactus plants that have a large number of spines. The number of cacti with 70 spines will spines will due to due to The number of cacti with 100 spines will due to The number of cacti with 130

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter45: Community Ecology

Section: Chapter Questions

Problem 3DAA: Testing Biological Control Biological control agents are used to battle red imported fire ants....

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The Two-Sided Attack on the Spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cact shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps. Spiny Cactus Organism Collared peccary (musk hog) Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cacti and these two organisms Parasitic wasp 100- o 70 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem C2022 Iluminate Education, Inc. Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus. and eat the inner pulp of the…
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). If this study had ended after the first year, would you conclude that biological controls had a major effect?
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?
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The Two-Sided Attack on the Spiny Cactus The spiny cactus is a type of plant that lives in a desert environment. A population of spiny cacti shows variation in the number of spines on their outer surfaces. The graph below shows the distribution of the number of spines before the introduction of collared peccaries and parasitic wasps. Spiny Cactus Organism Collared peccary (musk hog) Number of Cacti Parasitic wasp 300 200 100 T Collared peccaries and parasitic wasps are two organisms that were introduced to the ecosystem in which the spiny cactus population lives. The chart describes the relationship between the spiny cacti and these two organisms. 70 1 1 80 90 100 110 120 130 Number of Spines Organisms Introduced into the Ecosystem Relationship with Spiny Cactus Plants They eat spiny cactus plants that have a small number of spines. They lay eggs at the base of cactus spines. When the eggs hatch, the emerging grubs dig into the interior of the cactus and eat the inner pulp of the…
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