Table 2. Percentage of species with mitochondrial gene sequences out of the total described or estimated species in each phylum.
|
Gene |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of species (described/estimated) | srRNA | lrRNA | A6 | A8 | COI | COII | COIII | Cytb | ND1 | ND2 | ND3 | ND4L | ND4 | ND5 | ND6 | |
| Midori-LONGEST (longest sequence for each species) was used for this calculation. Numbers of described and estimated species follow Chapman20; if upper and lower bounds were denoted, we took the upper bound value. The number of Arthropoda species is the combined value of Insecta, Arachnida, Pycnogonida, Myriapoda, Crustacea and Hexapoda. Loricifera was removed because no mitochondrial sequence was found in the nt dataset. Refer to the text for the abbreviation of gene names. Thirteen mitochondrial protein-coding genes found in most but not all phyla of metazoans13. | ||||||||||||||||
| Acanthocephala | (1,150/1,500) | 0.61/0.47 | 0.87/0.67 | 0.61/0.47 | 0/0 | 6.35/4.87 | 0.61/0.47 | 0.61/0.47 | 0.61/0.47 | 0.61/0.47 | 0.61/0.47 | 0.61/0.47 | 0.52/0.40 | 0.52/0.40 | 0.61/0.47 | 0.61/0.47 |
| Annelida | (16,763/30,000) | 2.86/1.60 | 7.93/4.43 | 0.29/0.16 | 0.38/0.21 | 10.90/6.09 | 1.18/0.66 | 0.36/0.20 | 0.76/0.42 | 1.77/0.99 | 0.40/0.22 | 0.30/0.17 | 0.29/0.16 | 0.42/0.23 | 0.30/0.17 | 0.33/0.18 |
| Arthropoda | (1,175,708/5,892,000) | 0.90/0.18 | 2.04/0.41 | 0.15/0.03 | 0.14/0.03 | 6.40/1.28 | 1.02/0.20 | 0.16/0.03 | 0.69/0.14 | 0.48/0.09 | 0.19/0.04 | 0.13/0.03 | 0.13/0.03 | 0.18/0.04 | 0.27/0.05 | 0.13/0.03 |
| Brachiopoda | (550) | 3.45 | 3.64 | 1.09 | 1.27 | 8.00 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 | 1.09 |
| Bryozoa | (5,700/5,000) | 0.89/1.02 | 2.61/2.98 | 0.12/0.14 | 0.07/0.08 | 3.09/3.52 | 0.12/0.14 | 0.61/0.70 | 0.95/1.08 | 0.12/0.14 | 0.12/0.14 | 0.12/0.14 | 0.12/0.14 | 0.12/0.14 | 0.12/0.14 | 0.12/0.14 |
| Chaetognatha | (121) | 4.13 | 6.61 | 0 | 0 | 23.97 | 5.79 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 |
| Chordata | (64,788/80,500) | 25.00/20.12 | 30.01/24.15 | 9.79/7.88 | 9.19/7.40 | 31.47/25.32 | 7.71/6.21 | 6.77/5.45 | 38.85/31.26 | 10.32/8.30 | 24.08/19.38 | 10.15/8.17 | 6.71/5.40 | 12.14/9.77 | 7.43/5.98 | 6.76/5.44 |
| Cnidaria | (9,795) | 3.54 | 12.15 | 1.57 | 1.43 | 11.47 | 1.47 | 2.55 | 2.65 | 1.97 | 3.11 | 1.84 | 1.85 | 1.35 | 1.55 | 2.14 |
| Ctenophora | (166/200) | 0.60/0.50 | 1.20/1.00 | 0/0 | 0/0 | 3.61/3.00 | 1.81/1.50 | 1.20/1.00 | 1.20/1.00 | 1.20/1.00 | 0.60/0.50 | 1.20/1.00 | 1.20/1.00 | 1.20/1.00 | 1.20/1.00 | 0.60/0.50 |
| Cycliophora | (1) | 0 | 100 | 0 | 0 | 200 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Echinodermata | (7,003/14,000) | 4.16/2.08 | 10.58/5.29 | 0.80/0.40 | 0.79/0.39 | 13.04/6.52 | 1.14/0.57 | 1.07/0.54 | 1.29/0.64 | 0.79/0.39 | 0.80/0.40 | 0.59/0.29 | 0.69/0.34 | 0.59/0.29 | 0.59/0.29 | 0.59/0.29 |
| Entoprocta | (170/170) | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 10.00/10.00 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 | 1.18/1.18 |
| Gastrotricha | (400) | 0.25 | 0.25 | 0.25 | 0.25 | 10.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Gnathostomulida | (97) | 2.06 | 2.06 | 2.06 | 2.06 | 9.28 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 | 2.06 |
| Hemichordata | (108/110) | 3.70/3.64 | 24.07/23.64 | 3.70/3.64 | 3.70/3.64 | 4.63/4.55 | 3.70/3.64 | 3.70/3.64 | 8.33/8.18 | 3.70/3.64 | 3.70/3.64 | 3.70/3.64 | 3.70/3.64 | 3.70/3.64 | 3.70/3.64 | 3.70/3.64 |
| Kinorhyncha | (130) | 0 | 0 | 0 | 0 | 13.85 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Mollusca | (85,000/200,000) | 2.76/1.17 | 8.20/3.49 | 0.33/0.14 | 0.27/0.12 | 9.61/4.09 | 0.55/0.23 | 0.45/0.19 | 0.95/0.40 | 0.78/0.33 | 0.34/0.14 | 0.34/0.15 | 0.33/0.14 | 0.35/0.15 | 0.33/0.14 | 0.32/0.14 |
| Nematoda | (25,000/500,000) | 0.98/0.05 | 0.82/0.04 | 0.50/0.03 | 0.05/0 | 2.66/0.13 | 0.79/0.04 | 0.51/0.03 | 0.59/0.03 | 0.57/0.03 | 0.50/0.03 | 0.52/0.03 | 0.48/0.02 | 0.62/0.03 | 0.57/0.03 | 0.49/0.02 |
| Nematomorpha | (331/2,000) | 0/0 | 0/0 | 0/0 | 0/0 | 2.42/0.40 | 0/0 | 0/0 | 0.60/0.10 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| Nemertea | (1,200/10,000) | 1.17/0.14 | 11.08/1.33 | 1.17/0.14 | 1.17/0.14 | 14.00/1.68 | 1.17/0.14 | 1.67/0.20 | 1.33/0.16 | 1.33/0.16 | 1.25/0.15 | 1.25/0.15 | 1.25/0.15 | 1.25/0.15 | 1.25/0.15 | 1.33/0.16 |
| Onychophora | (165/220) | 33.94/25.45 | 20.00/15.00 | 2.42/1.82 | 2.42/1.82 | 41.82/31.36 | 3.03/2.27 | 2.42/1.82 | 2.42/1.82 | 3.03/2.27 | 2.42/1.82 | 2.42/1.82 | 2.42/1.82 | 2.42/1.82 | 2.42/1.82 | 2.42/1.82 |
| Placozoa | (1) | 100 | 200 | 100 | 0 | 100 | 100 | 100 | 100 | 100 | 0 | 100 | 100 | 100 | 0 | 100 |
| Platyhelminthes | (20,000/80,000) | 0.76/0.19 | 1.45/0.36 | 0.44/0.11 | 0/0 | 4.07/1.02 | 0.43/0.11 | 0.39/0.10 | 0.64/0.16 | 1.36/0.34 | 0.42/0.10 | 0.62/0.16 | 0.40/0.10 | 0.42/0.11 | 0.40/0.10 | 0.43/0.11 |
| Porifera | (6,000/18,000) | 0.93/0.31 | 1.55/0.52 | 1.03/0.34 | 0.78/0.26 | 9.13/3.04 | 0.93/0.31 | 0.95/0.32 | 1.02/0.34 | 1.05/0.35 | 0.87/0.29 | 0.90/0.30 | 0.90/0.30 | 0.92/0.31 | 0.93/0.31 | 0.95/0.32 |
| Priapulida | (16) | 12.50 | 12.50 | 12.50 | 12.50 | 18.75 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 | 12.50 |
| Rotifera | (2,180) | 0.18 | 1.10 | 0.50 | 0 | 8.17 | 0.37 | 0.41 | 0.37 | 0.37 | 0.28 | 0.32 | 0.37 | 0.37 | 0.37 | 0.37 |
| Tardigrada | (212) | 1.42 | 1.42 | 0.94 | 0.94 | 28.30 | 0.94 | 0.94 | 0.94 | 0.94 | 1.42 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 |