2924
We exposed adult Physa pomilia snails to 0 , 0 . 25 , or 1 . 0 mg / L malathion for 2 , 24 , or 48 h and evaluated predator avoidance using a behavioral assay in which snails were exposed to cues from predatory crayfish .
 Chemical: malathion
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: malathion