About the data

The ACC is a community resource. We compile chromosome counts for animals from papers, books and published datasets.

What the numbers mean

Each row is a species with one or more counts. Counts are as the sources report them. When a species has several, the charts use the first one and the species page lists all of them. A species whose sources report different counts is flagged as conflicting, and its page lists every count and every source.

Sampling is uneven. Chordata is at 6.5% of described species and Arthropoda at 0.9%. Ten of 27 phyla have no counts. The coverage page shows every phylum.

Columns

phylum, class, order, family, genus	Taxonomy of the species.
Species_corrected	Species name after taxonomic correction. The species page uses this name.
Species_original	Name as it appears in the source. Search finds it too.
ploidy_2N	Diploid number as reported. Some species list several.
ploidy_N	Haploid number as reported.
curated_roundup_N	Haploid number after curation. Half values are rounded up.
curated_rounddown_N	The same, with half values rounded down.
Reference	Source of the count. Several sources are separated by a semicolon.

License: Creative Commons Attribution 1.0 Generic, the same as the Zenodo record.

How to cite

Román-Palacios C, Medina CA, Zhan SH, Barker MS (2021). Animal chromosome counts reveal a similar range of chromosome numbers but with less polyploidy in animals compared to flowering plants. Journal of Evolutionary Biology 34(8): 1333-1339. https://doi.org/10.1111/jeb.13884

For the data, please also cite the Zenodo record: Román-Palacios C, Medina CA, Zhan SH, Barker MS (2021). The Animal Chromosome Count Database, version 1.0.1. Zenodo. https://doi.org/10.5281/zenodo.4635457

Who made it

The ACC was built by Cristian Román-Palacios, Cesar A. Medina, Shing H. Zhan and Michael S. Barker. Counts come from many sources. These supply the most rows.

Ashman, T. L., Bachtrog, D., Blackmon, H., Goldberg, E. E., Hahn, M. W., Kirkpatrick, M., et al. (2014). Tree of Sex: A database of sexual systems. Scientific Data, 1, 140015. 8,894 rows
Makino, S. (1951). An atlas of the chromosome numbers in animals. Iowa State College Press, Ames. 1,643 rows
Olmo E, Signorino GG: Chromorep: a reptiles chromosomes database (2005) http://chromorep.univpm.it/. 1,400 rows
S. Smith and Virkki (1978)Blackmon, Heath, and Jeffery P. Demuth. Coleoptera Karyotype Database. The Coleopterists Bulletin 69.1 (2015): 174-175. 840 rows
Arai, R. (2011). Fish karyotypes: a check list. Springer Science & Business Media. 792 rows
Graphodatsky, A. (2019). Chromosomes of Russian Mammals. http://www.bionet.nsc.ru/labs/chromosomes/intr_engl.htm Last visit Oct 2019 777 rows
Makino, S. (1951). An atlas of the chromosome numbers in animals. Iowa State College Press, Ames 679 rows
Petitpierre, Segarra, Yadav, and Virkki (1988)Blackmon, Heath, and Jeffery P. Demuth. Coleoptera Karyotype Database. The Coleopterists Bulletin 69.1 (2015): 174-175. 605 rows