The reason why it is necessary to test the response of lampreys to the scent of the alcohol alone Concept introduction: Sea lampreys are chordates that are classified as jawless fishes and are considered as major parasitic carnivorous chordates. The sea lampreys are pests in the Great lakes of the USA as they cause loss of several commercial fishes.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1DAA

Summary Introduction

To explain: The reason why it is necessary to test the response of lampreys to the scent of the alcohol alone

Concept introduction: Sea lampreys are chordates that are classified as jawless fishes and are considered as major parasitic carnivorous chordates. The sea lampreys are pests in the Great lakes of the USA as they cause loss of several commercial fishes.

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Many fish purchased and consumed by humans are bred and raised in fish farms. The fish on a farm can be infected by parasites called sea lice, which are small crustaceans that feed on a fish's blood and skin, which may injure or even kill the fish. Jansen and colleagues (2012) analyzed sea lice infections on trout and salmon farms. Fish farms provided data on the numbers of sea lice found on their captive fish. The scientists compared the number of sea lice with the "local farmed fish biomass density," which is a measure of population density that accounts for both the number and biomass (or size) of fish on a farm. Other research has also found a relationship between sea lice infestation and mortality. From this figure and information, how does density of fish on a farm affect the number of sea lice per fish? What type of factor is regulating the size of farmed fish populations and population growth? 100 200 300 400 Local farmed fish biomass density (metric tons) 3. 2. Sea lice counts

Answer 2

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1DAA

Summary Introduction

To explain: The reason why it is necessary to test the response of lampreys to the scent of the alcohol alone

Concept introduction: Sea lampreys are chordates that are classified as jawless fishes and are considered as major parasitic carnivorous chordates. The sea lampreys are pests in the Great lakes of the USA as they cause loss of several commercial fishes.

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1DAA

Summary Introduction

To explain: The reason why it is necessary to test the response of lampreys to the scent of the alcohol alone

Concept introduction: Sea lampreys are chordates that are classified as jawless fishes and are considered as major parasitic carnivorous chordates. The sea lampreys are pests in the Great lakes of the USA as they cause loss of several commercial fishes.

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Check out a sample textbook solution

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Answer 4

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1DAA

Summary Introduction