Predation Risk and The Foraging Behavior of Competing Stream Insects

Ecology ◽  
1989 ◽  
Vol 70 (6) ◽  
pp. 1811-1825 ◽  
Author(s):  
Steven L. Kohler ◽  
Mark A. McPeek
Keyword(s):  
Predation Risk ◽  
Foraging Behavior ◽  
Stream Insects

Perceived predation risk, parasitism, and the foraging behavior of a freshwater snail (Potamopyrgus antipodarum)

1998 ◽  
Vol 76 (10) ◽  
pp. 1878-1884 ◽  
Author(s):  
Edward P Levri
Keyword(s):  
Predation Risk ◽  
Foraging Behavior ◽  
Freshwater Snail ◽  
Potamopyrgus Antipodarum ◽  
Plain Water ◽  
Fish Diet ◽  
Fish Predator ◽  
Size Dependent ◽  
Individual Size ◽  
Perceived Predation Risk

Foraging behavior can be influenced by such factors as predation risk, individual size, and parasite infection. Snails (Potamopyrgus antipodarum) placed in tanks with large rocks were exposed to four types of water: (1) water with crushed snails, (2) water from a tank in which fish (Gobiomorphus cotidianus) were fed only trout chow, (3) water from a tank where the fish were also fed snails, and (4) plain water. Snails could respond by moving to the top of rocks (where algal food was present) or to the bottom of rocks (where the predation risk was lower). The snails responded to fish chemicals by moving to the bottom of rocks. The response was dependent on snail size and fish diet. Smaller snails moved to the bottom of rocks more than larger snails did. Trematode-infected snails were found on top of the rocks more than other classes of snails, but infected snails still moved to the bottom of rocks in response to the fish predator. Snails eaten by fish in the field tend to be smaller than snails in the overall available population. Thus, snails that are more vulnerable to predation respond more intensely to the odor of fish by moving to the bottom of rocks. This size-dependent response to fish appears to be independent of the occurrence of trematode infection.

Assessing Effects of Predation Risk on Foraging behavior of Mule Deer

2001 ◽  
Vol 82 (2) ◽  
pp. 430-439 ◽  
Author(s):  
K. B. Altendorf ◽  
J. W. Laundre ◽  
C. A. L. GonzaLez ◽  
J. S. Brown
Keyword(s):  
Predation Risk ◽  
Foraging Behavior ◽  
Mule Deer

scholarly journals Temporal Variation in Predation Risk May Explain Daily Rhythms of Foraging Behavior in an Orb-Weaving Spider

2018 ◽  
Vol 191 (1) ◽  
pp. 74-87 ◽  
Author(s):  
J. Colton Watts ◽  
Thomas C. Jones ◽  
Ashley Herrig ◽  
Madeleine Miller ◽  
Brigitte Tenhumberg
Keyword(s):  
Temporal Variation ◽  
Predation Risk ◽  
Foraging Behavior ◽  
Daily Rhythms

scholarly journals Effects of predation risk on group size, vigilance, and foraging behavior in an African ungulate community

2014 ◽  
Vol 25 (4) ◽  
pp. 773-784 ◽  
Author(s):  
S. Creel ◽  
P. Schuette ◽  
D. Christianson
Keyword(s):  
Predation Risk ◽  
Foraging Behavior ◽  
Group Size
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