Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 25, Problem 1DAA

Deathly Lamprey Repellent Predation by sea lampreys on native fishes in the Great Lakes is an ongoing problem. To help solve it, Michael Wagner and his team test methods of repelling lampreys. They carried out an experiment to investigate reports that sea lampreys detect the scent of lamprey carcasses and tend to avoid them. The researchers made alcohol-based lamprey carcass extracts, then observed what happened when lampreys were put in tanks and exposed to either this extract or to alcohol alone. FIGURE 25.6 shows their results.

Chapter 25, Problem 1DAA, Deathly Lamprey Repellent Predation by sea lampreys on native fishes in the Great Lakes is an

FIGURE 25.6 Effectiveness of carcass extracts as a lamprey repellent.

Mean proportion of lampreys on the scented side of the test tank during B trials with 10 lampreys. Lampreys were placed in the tank for 20 minutes before exposure to alcohol or carcass extract and remained there for 40 minutes after exposure. The upper graph shows results with alcohol as the stimulus; the lower shows the results with carcass extracts. Bars indicate standard error.

Why was it necessary to test the response of lampreys to the scent of alcohol alone?

Expert Solution & Answer
Check Mark
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 major parasitic carnivorous chordates. The sea lampreys are pests in the Great lakes of the USA as they cause loss of several commercial fishes.

Explanation of Solution

In order to reduce the menace of the lampreys, Scientist M and his team designed an experiment to investigate and report that sea lampreys detect the scent of other lamprey carcasses and have the nature to avoid them. The team used alcohol-based extracts of lamprey carcasses. They then observed the results when lampreys were put in two tanks: one with the alcohol-based extract and another with alcohol alone.

The alcohol serves as a control. The lampreys should not have any reaction towards alcohol as they are the additional substance present along with the tissue extract of lamprey carcass. Therefore, it is necessary to confirm that lampreys are not attracted to the scent alcohol.

Conclusion

The lampreys exposed to alcohol alone in the tank will help us to confirm if the lampreys are attracted to the carcass alone or both alcohol and carcass combined.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
forest sites than in forest fragments, whereas there were no significant differences between fragments of different sizes. These results provide further evidence for the effects of habitat size on the phorid-Acromyrmex system in a tropical rain forest, based on the abundance of parasitoids both as adults in the field and as reared immature phorids in the laboratory. Phorid parasitized leafcutter ants were most abundant in areas of continuous forest, and less abundant in the forest fragments. O Phorid flies are important parasitoids of leafcutter ants nd leafcutter ants can be found in Brazil's Southeastern Both phorid flies Atlantic Forest. The study provides evidence that this parasitoid-host interaction between phorid flies and leafcutter ant differs between continuous forest and forest fragments. Phorid flies were just as abundant in forest fragments as they were in continuous forest, but were less successful in parasitizing leafcutter ants.
the fennec fox is classified to which order
It appears that infection by Plasmodium is negative for Anopheles.  We also showed in class that the mosquito immune system can be upregulated to limit or terminate Plasmodium infection of these mosquitoes.  So why don’t we see natural selection to upregulate the mosquito’s immune system and get rid of that parasite?  Best explanation. Upregulating the immune system comes at the cost of shortening life span and thus (most probably) reproductive success Having a Plasmodium infection is negative for the mosquito, but it protects against much worse pathogens Upregulation of the immune system in Plasmodium leads to more rapid development of Plasmodium, causing even greater problems for Anopheles Statement is wrong. This upregulation was done with genetic engineering in a lab. Alleles to do something like that do not exist in nature
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Nutrition Now
Health & Nutrition
ISBN:9781337415408
Author:Brown
Publisher:Cengage
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Ebk:Nutrition & Diet Therapy
Health & Nutrition
ISBN:9780357391747
Author:DEBRUYNE
Publisher:Cengage
Text book image
An Illustrated Guide To Vet Med Term
Biology
ISBN:9781305465763
Author:ROMICH
Publisher:Cengage
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Interactions Within An Ecosystem | Ecology and Environment | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=UMbrxi_DsXc;License: Standard Youtube License