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Table 2 Nucleotide composition of third codon positions of the (+)strand encoded gene cox1, demonstrating strand bias in nucleotide frequencies within chelicerates.

From: The complete mitochondrial genome of Pseudocellus pearsei (Chelicerata: Ricinulei) and a comparison of mitochondrial gene rearrangements in Arachnida

Species Taxon A C G T CG skew Accession number
Lithobius forficatus Myriapoda 0.411 0.200 0.061 0.329 0.534 [GenBank:NC_002629]
Daphnia pulex Crustacea 0.273 0.211 0.166 0.350 0.119 [GenBank:NC_000844]
Penaeus monodon Crustacea 0.388 0.133 0.053 0.427 0.432 [GenBank:NC_002184]
Limulus polyphemus Xiphosura 0.434 0.229 0.023 0.315 0.814 [GenBank:NC_003057]
Oltacola gomezi Solifugae 0.407 0.199 0.055 0.339 0.569 [GenBank:EU024482]
Centruroides limpidus Scorpiones 0.094 0.045 0.264 0.597 -0.709 [GenBank:NC_006896]
Mesobuthus martensii Scorpiones 0.161 0.020 0.309 0.511 -0.881 [GenBank:NC_009738]
Heptathela hangzhouensis Araneae 0.374 0.096 0.061 0.470 0.225 [GenBank:NC_005924]
Ornithoctonus huwena Araneae 0.326 0.033 0.166 0.475 -0.667 [GenBank:NC_005925]
Habronattus oregonensis Araneae 0.361 0.012 0.101 0.526 -0.792 [GenBank:NC_005942]
Nephila clavata Araneae 0.379 0.016 0.109 0.496 -0.750 [GenBank:NC_008063]
Pseudocellus pearsei Ricinulei 0.405 0.281 0.031 0.283 0.801 [GenBank:EU024483]
Leptotrombidium akamushi Acariformes 0.356 0.176 0.084 0.384 0.354 [GenBank:NC_007601]
Leptotrombidium deliense Acariformes 0.389 0.123 0.074 0.413 0.247 [GenBank:NC_007600]
Leptotrombidium pallidum Acariformes 0.388 0.114 0.055 0.444 0.349 [GenBank:NC_007177]
Amblyomma triguttatum Parasitiformes 0.392 0.106 0.043 0.459 0.421 [GenBank:NC_005963]
Haemaphysalis flava Parasitiformes 0.433 0.105 0.043 0.419 0.421 [GenBank:NC_005292]
Rhipicephalus sanguineus Parasitiformes 0.431 0.086 0.025 0.458 0.545 [GenBank:NC_002074]
Ixodes hexagonus Parasitiformes 0.380 0.197 0.043 0.380 0.642 [GenBank:NC_002010]
Ixodes holocyclus Parasitiformes 0.420 0.093 0.035 0.451 0.455 [GenBank:NC_005293]
Ixodes persulcatus Parasitiformes 0.388 0.103 0.031 0.478 0.536 [GenBank:NC_004370]
Ixodes uriae Parasitiformes 0.410 0.173 0.039 0.379 0.633 [GenBank:NC_006078]
Carios capensis Parasitiformes 0.446 0.185 0.020 0.349 0.809 [GenBank:NC_005291]
Ornithodoros moubata Parasitiformes 0.413 0.164 0.041 0.382 0.600 [GenBank:NC_004357]
Ornithodoros porcinus Parasitiformes 0.378 0.164 0.064 0.394 0.436 [GenBank:NC_005820]
Metaseiulus occidentalis Parasitiformes 0.400 0.214 0.037 0.349 0.708 [GenBank:NC_009093]
Varroa destructor Parasitiformes 0.363 0.018 0.062 0.557 -0.560 [GenBank:NC_004454]
  1. Bold numbers indicate higher values in comparison of G and C proportions. Only those taxa (24 chelicerate and 3 outgroup taxa) included in our phylogenetic analysis (Fig. 4) are listed.