Volume 16, Number 9—September 2010
Research
Cercarial Dermatitis Transmitted by Exotic Marine Snail
Table 1
Hosts examined for avian schistosomes at 2 locations, United States*
| Animal, location, and date | Species | No. screened | No. positive | No. dissected | No. positive |
|---|---|---|---|---|---|
| Snails | |||||
| San Francisco Bay, California | |||||
| 2005 Jun | Ilynassa obsoleta | 96 | 0 | 48 | 0 |
| 2005 Jul | Haminoea japonica | 672 | 0 | 300 | 8 |
| I. obsoleta | 270 | 0 | 50 | 0 | |
| Urosalpinx cinerea | 220 | 0 | 0 | 0 | |
| Littorina sp. | 275 | 0 | 50 | 0 | |
| 2006 May | H. japonica | 400 | 0 | 100 | 0 |
| 2006 Jun | H. japonica | 300 | 0 | 150 | 0 |
| 2006 Nov | H. japonica | 222 | 0 | 100 | 0 |
| 2007 Jun | H. japonica | 930 | 0 | 350 | 11 |
| 2007 Jul | H. japonica | 655 | 0 | 266 | 37 |
| Philine sp. | 38 | 0 | |||
| 2008 Aug | H. japonica | 1,100 | 50 | 180 | 70 |
| I. obsoleta | 400 | 0 | 100 | 0 | |
| Littorina sp. | 200 | 0 | 100 | 0 | |
| Philine sp. | 100 | 0 | |||
| San Juan Island, Washington | |||||
| 2005 Aug |
H. virescens |
717 |
0 |
215 |
0 |
| Birds | |||||
| San Francisco Bay, California | |||||
| 2007 Aug | Larus californicus | NA | NA | 4 | 2 |
| L. occidentalis | NA | NA | 10 | 4 | |
| L. delawarensis | NA | NA | 1 | 1 | |
| 2008 Jan | L. occidentalis | NA | NA | 5 | 3 |
| L. glaucescens | NA | NA | 1 | 0 | |
| 2008 Mar | L. occidentalis | NA | NA | 7 | 5 |
| L. glaucescens | NA | NA | 1 | 1 |
*NA, not applicable.


