Welcome to the Animal Chromosome Count Database (ACC). The ACC is the largest database of animal chromosomal counts. We have curated chromosome numbers across the animal Tree of Life to make data accessible for people interested in understanding the potential links between biological processes and patterns to broad chromosomal changes in animals.
The ACC is a community resource, so anyone is welcome to contribute. We are looking for additional chromosome counts of all species already or not listed in the database.
The most recent ACC includes chromosome counts for approximately 18,000 animal species. We expect that future releases will (i) have higher numbers of species with chromosome counts and (ii) cover more groups present in the animal Tree of Life.
Feel free to contact us with questions, suggestions, and corrections!
More …Here, is a phylum-level summary of current chromosome counts listed in the ACC. We have indicated for each phylum (i) the total number of described species, (ii) the number of species with chromosome counts listed, (iii) a percentage of species counts relative to the total clade richness, and (iv) whether the counts have been manually curated.
| Phylum | Total richness | Species in the ACC | Richness in ACC (%) | Curated |
|---|---|---|---|---|
| Acoela | 140 | 0 | 0 | FALSE |
| Arthropoda | 1302809 | 9755 | 0.7 | TRUE |
| Brachiopoda | 392 | 0 | 0 | FALSE |
| Bryozoa | 6008 | 2 | 0 | TRUE |
| Chaetognatha | 170 | 4 | 2.4 | TRUE |
| Chordata | 85423 | 4134 | 4.8 | TRUE |
| Cnidaria | 10203 | 18 | 0.2 | TRUE |
| Ctenophora | 187 | 0 | 0 | FALSE |
| Echinodermata | 7550 | 26 | 0.3 | TRUE |
| Entoprocta | 171 | 2 | 1.2 | TRUE |
| Gastrotricha | 794 | 0 | 0 | FALSE |
| Gnathostomulida | 97 | 0 | 0 | FALSE |
| Hemichordata | 103 | 0 | 0 | FALSE |
| Kinorhyncha | 196 | 0 | 0 | FALSE |
| Mollusca | 84977 | 122 | 0.1 | TRUE |
| Nematoda | 25033 | 35 | 0.1 | TRUE |
| Nematomorpha | 339 | 7 | 2.1 | TRUE |
| Nemertea | 1358 | 10 | 0.7 | TRUE |
| Onychophora | 183 | 0 | 0 | FALSE |
| Phoronida | 16 | 2 | 12.5 | TRUE |
| Placozoa | 1 | 0 | 0 | FALSE |
| Platyhelminthes | 29487 | 306 | 1 | TRUE |
| Porifera | 8659 | 8 | 0.1 | TRUE |
| Rotifera | 2049 | 4 | 0.2 | TRUE |
| Sipuncula | 205 | 3 | 1.5 | TRUE |
| Tardigrada | 1167 | 1 | 0.1 | FALSE |
| Xenoturbellida | 2 | 0 | 0 | FALSE |