Table 1.
Species examined in this study
| Anatomical parameters |
||||
|---|---|---|---|---|
| Species (common name) | Family | TM type (≥1 kHz) | Papilla length [mm] | No. of hair cells |
| Anolis carolinensis (green anole) | Po | None | 0.45 (0.5) | 160 (182) |
| Aspidoscelis tigris† (whiptail lizard) | Te | Continuous | 0.65 | 370 (465) |
| Callisaurus draconoides† (zebra-tail lizard) | Ph | None | (0.2) | 65 (73) |
| Elgaria multicarinata† (Southern alligator lizard) | An | None | 0.4 | 160 |
| Eublepharis macularius∗ (leopard gecko) | Gk | Sallets and continuous | 1.25 | 970 |
| Eumeces schneideri (Schneider's skink) | Sk | Sallets | ? | 500? |
| Gekko gecko∗ (Tokay gecko) | Gk | Sallets and continuous | 1.8 | 1620 (2100) |
| Gerrhosaurus flavigularis (yellow-throated plated lizard) | Gr | Sallets | 0.8? | 530 |
| Pogona vitticeps (bearded dragon) | Ag | ? | ? | ? |
| Sceloporus magister† (desert spiny lizard) | Ph | None | 0.35 (0.35) | 80 (90) |
| Urosaurus ornatus† (ornate tree lizard) | Ph | None | 0.29? | 55 |
| Uta stansburiana† (common side-blotched lizard) | Ph | None | 0.22? (0.2) | 52 (55) |
Cited values are from Wever (25) and Miller (64) (the latter in parentheses). Where unknown, inferences based upon similar species are included (designated via the notation “?”). Family abbreviations as follows: Ag, Agamidae; Po, Polychrotidae; Ph, Phrynosomatidae; An, Anguidae; Sk, Scincidae; Gr, Gerrhosauridae; Gk, Gekkonidae; and Te, Teiidae. Families Ag, Po, and Ph all fall within infraorder Iguania. The designations non-TM, salletal, and continuous TM are meant simply to indicate the morphology of the TM over the majority of the papilla (i.e., for the bidirectional hair cells). All species except Eumeces have a continuous TM attached to the limbic lip overlying the portion of the papilla sensitive to frequencies <1 kHz (see (26,32)). For Eumeces, the TM over the low frequency portion of the papilla is unconnected to the limbic lip (46). Note that for clarity, the TM morphologies listed here are a simplification; see the literature (25,29) for more detailed descriptions. Total hair cell counts in the last column are per ear.
Species data from a previous study (13).
Species data from animals that were locally native/wild-caught.