. 2003 May 9;72(3):468–477. doi: 10.1046/j.1365-2656.2003.00716.x

Table 1.

The test statistic U, the variance of U (V (U)) and its SE (SE (U)) used to determine if species distributions deviated from the negative binomial distribution. The values of U fall within the range given by the SE (U) and therefore the species distributions follow the negative binomial distribution (Bliss & Fisher 1953) (Dsim = Drosophila simulans; Zap1 = Zaprionus morphospecies group 1; Dmel = D. melanogaster; Zap2 =Zaprionus morphospecies group 2)

Species	U	V (U)	SE (U)
Dsim	−150·64	3·98 × 10⁶	1996·19
Zap1	−0·46	0·26	0·51
Dmel	−0·02	8·77 × 10⁻⁴	0·03
Zap2	−0·01	9·60 × 10⁻⁵	0·01