22584
We exposed juveniles of the water flea Daphnia magna for 48 , 96 and 144 h to three stressors known to exert strong selection in natural populations of this species i . e . a sublethal concentration of the pesticide carbaryl , infective spores of the endoparasite Pasteuria ramosa , and fish predation risk mimicked by exposure to fish kairomones .
 Chemical: carbaryl
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: carbaryl