6208
Recent studies have demonstrated that aquatic insects biotransport MeHg and other contaminants to terrestrial consumers , but the factors that regulate the flux of MeHg out of aquatic ecosystems via emergent insects have not been studied .
 Chemical: MeHg; Chemical: MeHg
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: MeHg; Chemical: MeHg