This page provides an up to the minute summary of data currently available in the database. Parameters reported include minimum and maximum reported genomes sizes (in picograms), mean genomes sizes with standard error (SE), total number of species assayed, and the methods, cell types, and standards used for all available records. Note that the statistics reported here are based on all records in the database -- for maximum reliability, you are encouraged to evaluate the data for your particular group of interest directly. Note also that these C-value summaries do not currently account for instances of polyploidy (though this will be updated in the future).
Because these statistics refer to the database as a whole, they must be cited as follows if used in a publication:
- Gregory, T.R. (2005). Animal Genome Size Database. http://www.genomesize.com.
Please select your group of interest from the list:
- Entire Database (i.e., all animals)
- All Chordates | Amphibians | Birds | Fishes | Mammals | Reptiles
- All Invertebrates | Annelids | Arachnids | Crustaceans | Echinoderms | Flatworms | Insects | Molluscs | Nematodes
- Methods, Cell Types, and Standard Species
(Other invertebrate groups are insufficiently represented for summary stats)
Echinoderms
| Number of echinoderms: | 47 |
| Smallest echinoderm genome size: | 0.54pg, Dermasterias imbricata, Sea star |
| Largest echinoderm genome size: | 4.40pg, Thyonella gemmata, Sea cucumber |
| Mean for echinoderms: | 1.32pg ± 0.12 |
Comments:
- Click here for echinoderm data page
Summary of Methods, Cell Types, and Standard Species for Echinoderms
Methods (code)
| Biochemical Analysis (BCA) | 2 | 4.17% |
| Bulk Fluorometric Assay (BFA) | 39 | 81.25% |
| Feulgen Densitometry (FD) | 2 | 4.17% |
| Flow Cytometry (FCM) | 2 | 4.17% |
| Not Specified (NS) | 3 | 6.25% |
Cell Types (code)
| Haemocytes (HE) | 2 | 4.17% |
| Not specified (NS) | 1 | 2.08% |
| Sperm (S) | 45 | 93.75% |
Standard Species (code, C-value)
| Gallus domesticus (GD, 1.25pg) | 2 | 4.17% |
| Homo sapiens (HS, 3.50pg) | 1 | 2.08% |
| Mytilus galloprovincialis (MGP, 1.92pg) | 2 | 4.17% |
| Not specified | 6 | 12.50% |
| Strongylocentrotus purpuratus (SP, 0.89pg) | 37 | 77.08% |