How does variation in resistance to tetrodotoxin affect the ability of garter snakes to utilize rough-skinned newts as prey? Support your answer with data from the Data Gallery and elaborate in no more than 3 sentences.
How does variation in resistance to tetrodotoxin affect the ability of garter snakes to utilize rough-skinned newts as prey? Support your answer with data from the Data Gallery and elaborate in no more than 3 sentences.
Chapter4: Management Practices For Finfish
Section: Chapter Questions
Problem 21SA
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Transcribed Image Text:How does variation in resistance to tetrodotoxin affect the ability of garter snakes to
utilize rough-skinned newts as prey? Support your answer with data from the Data
Gallery and elaborate in no more than 3 sentences.
Transcribed Image Text:percent resistance (+ 1 SE)
time (min + 1 SE)
= exposure time
100
180
= recovery time
160-
80-
140-
120-
60
+
100-
80-
40
-
60-
40-
20
20-
consumed/ consumed/ rejected/
died
consumed
rejected
lived
lived
newt outcome
newt and snake outcome
Figure 21.7 Responses of garter snakes to newts. A, Percent resistance in snakes that consumed newts and lived or died
and in snakes that rejected newts. Resistance is as defined in text. B, Time that snakes were exposed to (held in mouth
prior to swallowing or rejecting) and time it took for snakes to recover after encounter with newts. Data from Williams et al.,
2003, Table 1; original art.
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