Jason R. Khym and James B. Layzer, U.S. Geological Survey/Biological Resources Division, Tennessee Cooperative Fishery Research Unit, Tennessee Technological University, Cookeville, TN 38501

Abstract. In the early 1900's, several fish species were identified as hosts for the black sandshell, Ligumia recta. Recent attempts to propagate L. recta with two of the reported hosts (bluegill Lepomis macrochirus and largemouth bass Micropterus salmoides) have produced inconsistent results and few juveniles. We conducted this study to determine which of the reported hosts were the most suitable for metamorphosing juvenile L. recta. Reported hosts were artificially infested with glochidia of L. recta and placed into 38 or 114 liter aquaria depending on fish size. Juvenile metamorphosis occurred from 15 to 48 days and varied according to water temperature. Bluegills and largemouth bass produced relatively few or no juveniles in three trials. Although similar numbers of glochidia encysted on all hosts, >10X more juveniles metamorphosed on sauger Stizostedion canadense compared to other hosts tested.