Table 2.
Numbers and percentages of species with host specialization (S) compared with the total number of herbivores (N) in marine shell-bearing molluscs.
| Location | N | S | Percentage | Source |
|---|---|---|---|---|
| Aleutian Islands | 40 | 10 | 25 | Vermeij et al., 1990 |
| Northern New England | 8 | 2* | 25 | Vermeij collection |
| Washington State | 86 | 12 | 14 | Kozloff, 1987 |
| Isefjord, Denmark | 14 | 3 | 21 | Rasmussen, 1973 |
| South-central Chile | 44 | 2 | 4.5 | Aldea and Valdovinos, 2005 |
| Jamaica | 55 | 6 | 11 | Vermeij collection |
| Western Panama | 46 | 1 | 2.2 | Vermeij collection |
| Guam | 103 | 9 | 8.7 | Vermeij collection |
| Palau | 81 | 7 | 8.6 | Vermeij collection |
Includes the recently extinct eelgrass-associated limpet Lottia alveus (Carlton et al., 1991).