Showing papers by "Jeremy S. Tiemann published in 2010"
Journal Article•
TL;DR: It seems unlikely that E. triquetra can recover naturally in Illinois, and carefully planned translocation or augmentation methods might be required to restore the species.
Abstract: Within Illinois, the state-endangered snuffbox mussel Epioblasma triquetra (Rafinesque) is currently found only in a small stretch of the Embarras River in Douglas and Coles counties and is considered one of the rarest freshwater mussels in the state. To assess the current population status of E. triquetra in Illinois, I estimated density, length frequency, and sex ratio of the Embarras River population. I also examined the status of the snuffbox mussel’s host fish, the logperch Percina caprodes (Rafinesque), to determine if the fish was present in this area. Seven sites in the Embarras River were sampled for freshwater mussels and fishes during the summers of 2007 and 2008 using common sampling protocols. Only five adult (>55 mm) E. triquetra males were collected from two sites, suggesting this species is functionally extirpated in Illinois. Although P. caprodes was collected at five sites including the two that housed E. triquetra, it occurred at low densities. It seems unlikely that E. triquetra can recover naturally in Illinois, and carefully planned translocation or augmentation methods might be required to restore the species.
1 citations
TL;DR: A recently discovered population of the freshwater snail Lithasia geniculata (Ornate Rocksnail) (Gastropoda: Pleuroceridae) from the Ohio River, IL, the first documented occurrence for this species outside the Tennessee and Cumberland river basins is reported.
Abstract: We report on a recently discovered population of the freshwater snail Lithasia geniculata (Ornate Rocksnail) (Gastropoda: Pleuroceridae) from the Ohio River, IL, the first documented occurrence for this species outside the Tennessee and Cumberland river basins. We collected 14 individuals on 26–27 August 2008 from the Ohio River, near Mound City, Pulaski County, IL. All of the specimens collected were discovered on an exposed shoal after the river dropped ≈0,5 min a 24-hr period and had several (7–33) Dreissena polymorpha (Zebra Mussel) attached to their shells.
1 citations
Journal Article•
1 citations