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
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Chapter 25, Problem 2DAA
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.
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.
What was the lowest proportion on lampreys on the scented side of the tank when the scent was alcohol? When the scent was alcohol-based carcass extract?
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Chapter 25 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 25 - Deathly Lamprey Repellent Predation by sea...Ch. 25 - Deathly Lamprey Repellent Predation by sea...Ch. 25 - Prob. 3DAACh. 25 - Prob. 4DAACh. 25 - Prob. 1SQCh. 25 - Which of the traits listed above are retained by...Ch. 25 - Vertebrate jaw banes evolved from ___ . a. gill...Ch. 25 - Prob. 4SQCh. 25 - Tetra pods evolved from ___ . a. sharks b....Ch. 25 - Turtles, Lizards, and birds belong to one major...
Ch. 25 - Prob. 7SQCh. 25 - Prob. 8SQCh. 25 - Prob. 9SQCh. 25 - Feathers and hair consist mainly of ___ . a....Ch. 25 - Prob. 11SQCh. 25 - ______ have scaleless skin and a heart with three...Ch. 25 - Prob. 13SQCh. 25 - Prob. 14SQCh. 25 - Arrange the groups in order in which they evolved....Ch. 25 - In 1798, a stuffed platypus specimen was delivered...Ch. 25 - Controlling forbody size, would you expect a...Ch. 25 - Why is it more difficult to determine the sex of a...Ch. 25 - Prob. 4CT
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