We have analyzed the genomes of 56 animal species, 34 of which have known miRNA entries in miRBase (Release 13.0). In addition, another 30 species also have known miRNA entries in miRBase without genome available for analysis and their “Genome version” columns are marked “*”.

SPECIES List
Index SPECIES Total
miRNAs		 Known
miRNAs		 Orthologus
Candidates		 Paralogous
Candidates		 Genome
Version
1 Amphimedon queenslandica 8 8 0 0 *
2 Hydra magnipapillata 1 1 0 0 *
3 Nematostella vectensis 40 40 0 0 *
4 Schistosoma mansoni 5 5 0 0 *
5 Schistosoma japonicum 5 5 0 0 *
6 Schmidtea mediterranea 63 63 0 0 *
7 Caenorhabditis briggsae 171 95 20 56 cb3
8 Caenorhabditis elegans 234 155 12 67 ce6
9 Caenorhabditis brenneri 66 0 66 0 caePb2
10 Caenorhabditis remanei 61 0 61 0 caeRem3
11 Caenorhabditis japonica 54 0 54 0 caeJap1
12 Pristionchus pacificus 30 0 30 0 priPac1
13 Capitella sp. 72 72 0 0 *
14 Haliotis rufescens 5 5 0 0 *
15 Lottia gigantea 59 59 0 0 *
16 Cerebratulus lacteus 2 2 0 0 *
17 Ixodes scapularis 1 1 0 0 *
18 Apis mellifera 133 62 21 50 apiMel2
19 Bombyx mori 55 55 0 0 *
20 Tribolium castaneum 122 55 17 50 triCas2
21 Anopheles gambiae 347 66 234 47 anoGam1
22 Locusta migratoria 7 7 0 0 *
23 Drosophila ananassae 205 76 79 50 droAna3
24 Drosophila erecta 192 81 63 48 droEre2
25 Drosophila grimshawi 261 82 136 43 droGri2
26 Drosophila mojavensis 284 71 166 47 droMoj3
27 Drosophila persimilis 214 75 86 53 droPer1
28 Drosophila sechellia 209 78 80 51 droSec1
29 Drosophila simulans 198 70 84 44 droSim1
30 Drosophila virilis 255 74 133 48 droVir3
31 Drosophila willistoni 306 77 187 42 droWil1
32 Drosophila yakuba 219 80 88 51 droYak2
33 Drosophila melanogaster 200 152 46 2 dm3
34 Drosophila pseudoobscura 175 73 98 4 dp4
35 Strongylocentrotus purpuratus 146 45 72 29 strPur2
36 Saccoglossus kowalevskii 43 43 0 0 *
37 Branchiostoma floridae 221 78 48 95 braFlo1
38 Ciona intestinalis 49 34 11 4 ci2
39 Ciona savignyi 27 27 0 0 *
40 Oikopleura dioica 66 66 0 0 *
41 Petromyzon marinus 86 0 86 0 petMar1
42 Danio rerio 659 336 282 41 danRer5
43 Fugu rubripes 348 131 70 147 fr2
44 Tetraodon nigroviridis 418 132 221 65 tetNig1
45 Oryzias latipes 273 0 273 0 oryLat2
46 Gasterosteus aculeatus 483 0 483 0 gasAcu1
47 Xenopus laevis 7 7 0 0 *
48 Xenopus tropicalis 294 184 82 28 xenTro2
49 Anolis carolinensis 195 0 195 0 anoCar1
50 Taeniopygia guttata 242 0 242 0 taeGut1
51 Gallus gallus 579 474 26 79 galGal3
52 Ornithorhynchus anatinus 530 331 142 57 ornAna1
53 Monodelphis domestica 454 119 193 142 monDom4
54 Dasypus novemcinctus 259 0 259 0 dasNov1
55 Erinaceus europaeus 195 0 195 0 eriEur1
56 Echinops telfari 276 0 276 0 echTel1
57 Sorex araneus 146 0 146 0 sorAra1
58 Tupaia belangeri 998 0 998 0 tupBel1
59 Canis familiaris 626 321 213 92 canFam2
60 Felis catus 286 0 286 0 felCat3
61 Equus caballus 541 0 541 0 equCab1
62 Bos taurus 554 356 179 19 bosTau4
63 Ovis aries 4 4 0 0 *
64 Sus scrofa 77 77 0 0 *
65 Loxodonta africana 304 0 304 0 loxAfr1
66 Oryctolagus cuniculus 354 0 354 0 oryCun1
67 Cavia porcellus 561 0 561 0 cavPor3
68 Mus musculus 1161 547 105 509 mm9
69 Rattus norvegicus 634 286 216 132 rn4
70 Cricetulus griseus 1 1 0 0 *
71 Symphalangus syndactylus 11 11 0 0 *
72 Callithrix jacchus 453 0 453 0 calJac1
73 Ateles geoffroyi 60 60 0 0 *
74 Lagothrix lagotricha 48 48 0 0 *
75 Otolemur garnettii 337 0 337 0 otoGar1
76 Saguinus labiatus 42 42 0 0 *
77 Macaca mulatta 807 463 248 96 rheMac2
78 Macaca nemestrina 75 75 0 0 *
79 Pygathrix bieti 11 11 0 0 *
80 Lemur catta 16 16 0 0 *
81 Gorilla gorilla 86 86 0 0 *
82 Homo sapiens 886 706 78 102 hg18
83 Pan paniscus 89 89 0 0 *
84 Pan troglodytes 817 594 171 52 panTro2
85 Pongo pygmaeus 84 84 0 0 *
86 Pongo abelii 583 0 583 0 ponAbe2
Total 86 SPECIES.