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Property Organism Value Units ID Details
Estimates of the biosphere's oceanic invertebrates biomass Invertebrates 300 to 500 Table - link Mt C 109626 Vaclav Smil, The Earth's...
Size of large marine invertebrates Invertebrates sponge Xestospongia muta >7m^3: tube worm Riftia pachyptila >3m: jellyfish Nemopilema nomurai >3m N/A 113317 Smith et al., Body size...
Estimates of the biosphere's land invertebrates biomass Invertebrates 400 to 1,000 Table - link Mt C 109621 Vaclav Smil, The Earth's...
Fraction of 3,623 terrestrial invertebrate species and of 1,306 marine invertebrate species that are classified as threatened with extinction Invertebrates terrestrial species 42%: marine species 25% % 117264 Ceballos G, Ehrlich PR...
Divergence of insects and Onychophora (and of the Hoxa9-13 genes) Invertebrates >500 million years ago 117009 Carroll SB. Evo-devo...
Mean 3' UTR length Invertebrates 280 bp 103821 Mazumder B, Seshadri V...
Number of described species Invertebrates ~1.4 million species 117270 Régnier C et al., Mass...
Axon diameter in both vertebrates and invertebrates Various 0.5 to 30 μm 108980 Zalc B, Goujet D, Colman...
Number of protons that are required by the F-ATPase to make each ATP molecule in vertebrates and invertebrates (equivalent to 8 protons translocated each rotation) Eukaryotes 2.7 unitless 105661 Watt IN, Montgomery MG...
Intracellular potassium concentration Generic 120-150 mOs 102418 Schmidt-Nielsen B. C...
Mean 5 prime-UTR length in mRNA transcripts Human Homo sapiens 150 nt 102575 Mazumder B, Seshadri V...
Mass-specific metabolic rates q across life Biosphere Table - link W/kg 107981 Makarieva AM, Gorshkov VG...
Chitin content of selected crustacean, insects, molluscan organs, and fungi Various Table - link % 115475 Tharanathan RN, Kittur...
Mean 3 prime-UTR length in mRNA transcripts Human Homo sapiens >=500 nt 102574 Mazumder B, Seshadri V...
Typical effective population size Eukaryotes unicellular eukaryotes <10^8, sometimes 10^6: invertebrates ~10^6: some vertebrates 10^4 individuals 112122 Michael Lynch and Georgi...
Velocity of conduction of nerve impulses Various Table - link N/A 108973 Bullock TH, Horridge...
Fraction of total organic matter that is chitinous structures Arthropods ≤85 % 115063 Tharanathan RN, Kittur...
Number of animals in which the ability to walk on water has independently evolved Metazoa animals >1200 species 116189 Mammola S, Michalik P...
Velocity of action potential in giant fiber Cockroach Periplaneta 9 to 12 m/s 108972 Bullock TH, Horridge...
Number of neurons in the central nervous system of small free-living metazoans such as rotifers and nematodes Eukaryotes <300 neurons 109130 Williams RW, Herrup K....