BROOKER BIOLOGY
5th Edition
ISBN: 9781307656152
Author: BROOKER
Publisher: MCG/CREATE
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Textbook Question
Chapter 56.2, Problem 1CC
Figure 56.6 Idealized survivorship curves.
Which type of survivorship curve would you expect for (a) mussels and (b) turtles?
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Which curve on the graph represents a species that produces high numbers of offspring with little paternal care?
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Figure 40.3
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Suppose that researchers wanted to examine the combined effects of an introduced predator (a trout) and the trematode parasite Ribeiroia on amphibian populations. To do this, they
established frog populations in each of 40 artificial ponds. Each pond was assigned at random to one of four treatments (10 ponds per treatment): 1) neither trout or parasites were added
to the pond (the "No trout, no parasite" treatment); 2) no trout were added but parasites were added ("No trout, parasite added"); 3) trout were added but parasites were not added ("Trout
added, no parasite"); and 4) both trout and parasites were added ("Trout added, parasite added"). Each pond contained refugia where tadpoles could avoid attack by trout, to avoid fish
predators driving frog populations to extinction in an artificial pond, unlike what typically occurs in a natural pond. After two breeding seasons, the researchers estimated the density of
frogs in each pond. The results are shown in the table and the figure.…
Chapter 56 Solutions
BROOKER BIOLOGY
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