Table 2.
Estimated genome sizesa of representative amphibians.
| Species (common name) | Genome size (Gb) | Chromosome number |
|---|---|---|
| ANURA | ||
| Bombina orientalis (oriental fire-bellied toad) | 8.0 | 24 |
| Bufo americanus (American toad) | 5.1 | 22 |
| Bufo bufo (common toad) | 6.6 | 22 |
| Bufo marinus (cane toad) | 4.8 | 22 |
| Hyla arborea (European tree frog) | 4.7 | 24 |
| Hyla versicolor (gray tree frog) | 9.6 | 48 |
| Pelobates fuscus (European spadefoot toad) | 4.4 | 26 |
| Pseudacris regilla (Pacific tree frog) | 3.7 | 24 |
| Rana aurora (red-legged frog) | 9.0 | 26 |
| Rana catesbeiana (North American bullfrog) | 7.4 | 26 |
| Rana clamitans (green frog) | 6.7 | 26 |
| Rana esculenta (edible frog) | 6.8 | 26 |
| Rana japonica (Japanese reddish frog) | 5.7 | 26 |
| Rana pipiens (northern leopard frog) | 6.7 | 26 |
| Rana rugosa (wrinkled frog) | 8.0 | 26 |
| Rana sylvatica (wood frog) | 5.8 | 26 |
| Rana temporaria (common European frog) | 4.2 | 26 |
| Spea hammondii (Western spadefoot toad) | 1.6 | 26 |
| Xenopus laevis (South African clawed frog) | 3.2 | 36 |
| Xenopus tropicalis (Western clawed frog) | 1.7 | 20 |
| CAUDATA | ||
| Ambystoma maculatum (spotted salamander) | 32.3 | 28 |
| Ambystoma mexicanum (Mexican axolotl) | 34.0 | 28 |
| Ambystoma tigrinum (tiger salamander) | 31.0 | 28 |
| Andrias japonicus (Japanese giant salamander) | 45.5 | 60 |
| Dicamptodon ensatus (Pacific giant salamander) | 55.6 | 28 |
| Necturus maculosus (mudpuppy) | 84.1 | 38 |
| Notophthalmus viridescens (red spotted newt) | 36.9 | 22 |
| Pleurodeles waltl (Spanish ribbed newt) | 20.0 | 24 |
| Triturus vulgaris (common newt) | 24.9 | 24 |
| GYMNOPHIONA | ||
| Geotrypetes seraphini (Gaboon caecilian) | 4.6 | 38 |
| Gymnopis multiplicata (Purple caecilian) | 3.6 | 24–26 |
| Siphonops annulatus (caecilian) | 13.6 | ? |
Adapted from Gregory (2012).
aGenome sizes presented are the average of C-values from the Animal Genome Size database for a given species. C-values represent the haploid DNA amount in a gametic nucleus. The term is used interchangeably with genome size for diploids. However, when an organism is polyploid, the C-value may represent multiple genomes within the nucleus and may not represent the true haploid DNA amount.