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Table 2 Nucleotide composition and AT-and CG-skews of mitochondrial genomes.

From: The complete mitochondrial genome of Flustra foliacea (Ectoprocta, Cheilostomata) - compositional bias affects phylogenetic analyses of lophotrochozoan relationships

Taxon Length (bp) A C G T AT% AT skew GC skew
Cnidaria
Acropora tenuis 18338 0.251 0.137 0.242 0.370 62.0% -0.192 0.277
Metridium senile 17443 0.269 0.169 0.212 0.349 61.9% -0.129 0.112
Hemichordata
Balanoglossus carnosus 15708 0.251 0.314 0.171 0.264 51.4% -0.026 -0.295
Echinodermata
Arbacia lixula 15719 0.295 0.205 0.170 0.330 62.5% -0.057 -0.091
Florometra serratissima 16005 0.264 0.116 0.156 0.464 72.8% -0.274 0.149
Chordata
Homo sapiens 16569 0.309 0.313 0.131 0.247 55.6% 0.112 -0.410
Xenopus laevis 17553 0.331 0.235 0.135 0.300 63.0% 0.049 -0.270
Chaetognatha
Paraspadella gotoi 11423 0.394 0.147 0.125 0.334 72.8% 0.081 -0.082
Spadella cephaloptera 11905 0.364 0.182 0.167 0.286 65.0% 0.120 -0.044
Priapulida
Priapulus caudatus 14919 0.303 0.144 0.165 0.388 69.1% -0.123 0.068
Nematoda
Caenorhabditis elegans 13794 0.314 0.089 0.149 0.448 76.2% -0.175 0.253
Trichinella spiralis 16706 0.405 0.230 0.097 0.265 67.0% 0.209 -0.405
Onychophora
Epiperipatus biolleyi 14411 0.320 0.086 0.173 0.421 74.1% -0.135 0.334
Arthropoda
Limulus polyphemus 14985 0.375 0.227 0.097 0.301 67.6% 0.111 -0.399
Heptathela hangzhouensis 14215 0.416 0.172 0.106 0.369 78.6% 0.059 -0.235
Antrokoreana gracilipes 14747 0.298 0.199 0.180 0.323 62.1% -0.041 -0.049
Lithobius forficatus 15695 0.369 0.204 0.117 0.310 67.9% 0.087 -0.269
Triops cancriformis 15101 0.358 0.182 0.131 0.330 68.8% 0.041 -0.163
Penaeus monodon 15984 0.353 0.167 0.127 0.354 70.6% -0.001 -0.136
Atelura formicaria 15205 0.348 0.246 0.130 0.276 62.4% 0.114 -0.308
Tribolium castaneum 15881 0.398 0.185 0.098 0.319 71.7% 0.109 -0.305
Platyhelminthes
Microcotyle sebastis 14407 0.293 0.097 0.197 0.411 70.4% -0.166 0.341
Echinococcus granulosus 13588 0.191 0.080 0.250 0.479 67.1% -0.430 0.515
Schistosoma japonicum 14085 0.249 0.084 0.206 0.461 71.0% -0.299 0.422
Entoprocta
Loxocorone allax 14862 0.412 0.148 0.118 0.322 73.4% 0.123 -0.111
Loxosomella aloxiata 15323 0.392 0.163 0.131 0.314 70.6% 0.110 -0.108
Ectoprocta
Flustrellidra hispida 13026 0.271 0.235 0.176 0.318 58.9% -0.079 -0.142
Watersipora subtorquata 14144 0.364 0.163 0.131 0.342 70.6% 0.030 -0.108
Bugula neritina 15433 0.377 0.176 0.124 0.323 70.0% 0.078 -0.173
Flustra foliacea 16089 0.248 0.114 0.222 0.417 66.5% -0.254 0.321
Phoronida
Phoronis psammophila a 14018 0.334 0.168 0.166 0.332 66.6% 0.002 -0.005
Brachiopoda
Lingula anatina b 28818 0.261 0.161 0.219 0.359 62.0% -0.158 0.153
Terebratulina retusa 15451 0.295 0.277 0.151 0.277 57.2% 0.033 -0.294
Laqueus rubellus 14017 0.208 0.151 0.265 0.375 58.4% -0.286 0.272
Terebratalia transversa 14291 0.199 0.134 0.275 0.392 59.1% -0.328 0.344
Nemertea
Cephalothrix simula 16296 0.275 0.102 0.148 0.474 74.9% -0.266 0.182
Lineus viridis 15388 0.213 0.119 0.224 0.445 65.7% -0.352 0.306
Annelida
Sipunculus nudus 15502 0.268 0.297 0.161 0.274 54.2% -0.013 -0.297
Clymenella torquata 15538 0.330 0.195 0.133 0.343 67.2% -0.020 -0.188
Urechis caupo 15113 0.315 0.235 0.144 0.305 62.0% 0.016 -0.240
Platynereis dumerilii 15619 0.312 0.204 0.154 0.329 64.1% -0.026 -0.141
Lumbricus terrestris 14998 0.298 0.225 0.158 0.318 61.6% -0.031 -0.176
Mollusca
Katharina tunicata 15532 0.314 0.119 0.186 0.380 69.4% -0.095 0.220
Graptacme eborea 14492 0.370 0.132 0.127 0.371 74.1% -0.002 -0.021
Nautilus macromphalus 16258 0.337 0.285 0.119 0.258 59.6% 0.133 -0.412
Loligo bleekeri 17211 0.388 0.195 0.092 0.325 71.3% 0.089 -0.358
Octopus vulgaris 15744 0.411 0.176 0.076 0.337 74.9% 0.099 -0.397
Pupa strigosa 14189 0.274 0.183 0.205 0.337 61.1% -0.103 0.056
Aplysia californica 14117 0.286 0.154 0.182 0.377 66.3% -0.137 0.085
Biomphalaria glabrata 13670 0.331 0.113 0.141 0.416 74.6% -0.114 0.110
  1. AT skew = (A%-T%)/(A%+T%); GC skew = (G%-C%)/(C%+G%); a partial; b repetitive