e/Chesson's index

Information
has gloss	eng: Chesson's Index refers to an index of feeding selectivity described by Jean Chesson in the early 1980s . The use of this index has been widespread with more than 400 citations in the scientific literature . In short, this index is intended to show whether a preference for a food item or resource exists by comparing the availability and use of that food item.
lexicalization	eng: Chesson's index
instance of	(noun) the act of consuming food feeding, eating