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Property Organism Value Units ID Details
Number of described and undescribed animal species Biosphere described ~1,900,000: undescribed 11,000,000 species 113443 Pimm SL et al., The ...
Time of radiation across the North American continent from a European ancestor Butterfly Limenitis spp. during the past 3 - 4 million years 117176 Frentiu FD, Briscoe AD....
Chitin content of selected crustacean, insects, molluscan organs, and fungi Various Table - link % 115475 Tharanathan RN, Kittur...
Span of Geozoic (since life first appeared till present day) Biosphere ~3,600 Mya 113312 Smith et al., Body size...
Estimated number of marine species Biosphere primary source [9] 2.2±0.18: primary source [12] 0.7 - 1.0 million species 113445 Pimm SL et al., The ...
Major reference genomes of the methylotroph and basal lineages (genome size, number of chromosomes and number of genes) Yeast Table - link N/A 114019 Dujon BA, Louis EJ. Genome...
Number of males (drones) that typically fertilize the queen Bee Apis mellifera 7 to 20 Drones 106680 Tomkins JP et al., New...
Diameter of lens of ocelii (simple eye) Cockroach Periplaneta ~0.7 mm 117185 Mizunami M. Functional...
Number of photoreceptors contained in ocellar retina Cockroach Periplaneta ~10,000 photoreceptors 117186 Mizunami M. Functional...
Ratio between O2 uptake in flight and O2 uptake in rest Bee Apis mellifera at 18°C 580: at 11°C 1,100 Table - link unitless 110031 Leigh E. Chadwick and...
Life span of higher termites Termite 250 (13 days fed by antibiotics that kill both bacteria and spirochetes) Days 106607 Nardi JB, Mackie RI,...
Fraction of termite energy requirement that is provided by microbial acetogenesis in termite guts Termite >= (1/3) Unitless 106608 Nardi JB, Mackie RI,...
Fraction of hindgut contents that are microbiall cells Termite Reticulitermes flavipes 61 % 106609 Nardi JB, Mackie RI,...
Number of molecules of ATP required per molecule of N2 fixed prokaryote 20 to 30 ATP/N2 fixed 106610 Nardi JB, Mackie RI,...
C:N ratio in tissues of most animals Unspecified 10:1 C:N 106611 Nardi JB, Mackie RI,...
Concentration of prokaryotes in termite gut Termite Mastotermes darwiniensis 5.5e+9 Cells/ml 104951 Berchtold M, Chatzinotas A...
Rate of egg laying by queen after fertilization Bee Apis mellifera >1,500 Eggs/day 107342 Kocher SD, Tarpy DR,...
Estimates of Rate and Dissociation Constants Describing DNA Polymerase delta-Catalyzed Reactions Human Homo sapiens Table - link N/A 105485 Meng X, Zhou Y, Lee EY...
Percent of arthropod species that are beetles Unspecified 40 % 103932 May RM. How Many Species...
Number of described species of organisms Biosphere 2e+6 Unitless 103927 May RM. How Many Species...