Kanab Ambersnail at Vaseys Paradise, Grand Canyon National Park, 1998 Monitoring and Research Year-end report to NPS
Meretsky V and Wegner D. 1999. Kanab Ambersnail at Vaseys Paradise, Grand Canyon National Park, 1998 Monitoring and Research Year-end report to NPS. Bloomington, IN
The 1998 research and monitoring field work for Kanab ambersnails (Oxy/oma haydeni kanabensis) at Vasey's Paradise, Grand Canyon, AZ comprised four site visits in April, May, July, and September. Population estimates were 9,500 in April, 7,000 in May, 8,000 in July, and 16,000 in September. Breeding seemed to have been delayed somewhat due to a late, cold spring; young snails were present in July, but constituted a larger proportion of observed snails in September. Habitat availability changed somewhat seasonally, but all changes were similar to changes in the previous years. PIT tagging of Peromyscus crinitus was successful. Two of 46 recaptures were of mice that had crossed the main spring pourout. Radulae have been isolated from Catinella, a succineid snail, and survived intact in a chemical model of a Peromyscus stomach. Genetic studies of succineid taxonomy continue at Northern Arizona University; the Vasey's Paradise population is least like the other 4 Oxy/oma populations known from the southern Utah and northern Arizona.
- Type
- Published Report
- Authors
- Meretsky, Vicky; Wegner, David
- Date of Issue
- 1999
- Units
- GRCA
- Keywords
- Animal Studies, Kanab ambersnail, oxyloma haydeni kanabensis, Threatened - Endangered - Sensitive Animals