Table 4. Classes and total number of opsins in different species.
The “Other” opsin class includes cnidops and echinopsins. Opsin numbers are based on whole genome data unless indicated (*). Of note, many opsin sequences are not functionally verified and may be pseudogenes. The following species were used for the table: amphioxus (Branchiostoma floridae), comb jelly (Mnemiopsis leidyi), horseshoe crab (Liminus polyphemus), hydra (Hydra magnipalillata), mosquito (Aedes aegypti), octopus (Octopus bimaculoides), ragworm (Platynereis dumerilii), sea anemone (Nematostella vectensis), sea urchin (Strongylocentrotus purpuratus), scallop (Pectinidae), squid (Dorytheuthis pealeii), tunicate (Ciona intestinalis), water flea (Daphnia pulex).
| Animal | Opsin groups
|
Total | |||
|---|---|---|---|---|---|
| C-opsin | R-opsin | RGR/Go | Other | ||
| Mammal | |||||
|
| |||||
| human | 5 | 1 | 3 | - | 9 |
| mouse | 4 | 1 | 3 | - | 8 |
|
| |||||
| Non-mammalian vertebrate | |||||
|
| |||||
| zebrafish | 23 | 5 | 14 | - | 42 |
| chicken | 9 | 2 | 6 | - | 17 |
|
| |||||
| Arthropod | |||||
|
| |||||
| fruit fly | - | 7 | - | - | 7 |
| mosquito | 1 | 9 | - | - | 10 |
| horseshoe crab | 2 | 14 | 2 | - | 18 |
| water flea | 9 | 37 | - | - | 46 |
|
| |||||
| Mollusc | |||||
|
| |||||
| squid/scallop* | - | 1 | 1 | - | 2 |
| octopus | - | 2 | 2 | - | 4 |
|
| |||||
| Chordate | |||||
|
| |||||
| tunicate | 2 | - | 1 | - | 3 |
| amphioxus | 5 | 7 | 8 | - | 20 |
|
| |||||
| Echinoderm | |||||
|
| |||||
| sea urchin | 1 | 1 | 5 | 2 | 9 |
|
| |||||
| Annelid | |||||
|
| |||||
| ragworm | 1 | 5 | 5 | - | 11 |
|
| |||||
| Cnidarian | |||||
|
| |||||
| sea anemone | - | - | - | 31 | 31 |
| hydra | - | - | - | 63 | 63 |
|
| |||||
| Ctenophore | |||||
|
| |||||
| comb jelly | - | - | - | 3 | 3 |