>10^8 for prokaryotes: 10^7 to 10^8 for unicellular eukaryotes Individuals
||Lynch M, Conery JS. The origins of genome complexity. Science. 2003 Nov 21 302(5649):1401-4. p.1401 right column bottom paragraphPubMed ID14631042
||Ne (effective population size) can be disentangled from u (mutation rate per
nucleotide) by noting that the mutation rate per base per cell division ranges from 5?10^-11 to 5?10^-10, with an average value of ~2.3?10^-10 (Drake et al., 1998 PMID 9560386). This implies that Ne is generally greater than 10^8 for prokaryotes and often in the range of 10^7 to 10^8 for unicellular eukaryotes.
||Similarly, effective population size for invertebrates is in the range of 10^5 to 10^6 and 10^4 to 10^5 for vertebrates (p.1401 right column bottom paragraph and p.1402 left column top paragraph).