Volume 3, Number 3—September 1997
Dispatch
Population Dynamics of the Deer Mouse (Peromyscus maniculatus) and Sin Nombre Virus, California Channel Islands
Table
Numbers of Peromyscus maniculatus captured and tested on San Miguel (SMI), Santa Rosa (SRI), and Santa Cruz (SCI) Islands in 1995 and 1996, and results of serologic assay on blood collected from captured mice
| Island (Site) | Dates | Total captures (no.) | Mice (no.) | Density no. ha-1 (SE) | Tested for SNV (no.) | SNV- positive (%) | Female: Male | Female: Male SNV- positive |
|---|---|---|---|---|---|---|---|---|
| SMI (Helipad) | 3-5 Sep 95 | 152 | 118 | 104.3 (9.6) | 116 | 15.5 | 59:57 | 6:12 |
| SMI (Helipad) | 5-17 Feb 96 | 67 | 49 | 43.3 (6.19) | 49 | 14.3 | 25:24 | 3:4 |
| SMI (Airstrip) | 3-5 Sep 95 | 353 | 247 | 218a (NA) | 34 | 5.9 | 17:17 | 1:1 |
| SMI (Airstrip) | 15-17 Feb 96 | 90 | 70 | 61.9 (7.4) | 70 | 30 | 37:33 | 10:11 |
| SRI (Airstrip) | 7-9 Sep 95 | 2 | 1 | NA | 1 | 100 | 0:1 | 0:1 |
| SRI (Torrey) | 7-9 Sep 95 | 0 | 0 | NA | 0 | NA | 0:0 | 0:0 |
| SRI (Campgr) | 27-29 Mar 96 | 43 | 22 | 19.5 (4.15) | 22 | 13.6 | 9:13 | 0:3 |
| SRI (Cherry) | 27-29 Mar 96 | 27 | 15 | 13.3 (3.42) | 15 | 13.3 | 5:10 | 0:2 |
| SCI (East Val) | 23-25 Mar 96 | 10 | 6 | 5.3 (2.01) | 6 | 0.0 | 2:4 | 0:0 |
| SCI (Ranch) | 23-25 Mar 96 | 5 | 2 | NA | 2 | 0.0 | 1:1 | 0:0 |
a Density was not estimated using DISTANCE, but directly, as the number of mice caught (247) divided by the area covered by the web (1.13 ha).
