Table 1.

Average female life span of five medfly populations in F₂, F₅, F₇, and F₉ generation. Fifty pairs of adults (replicates) were used for each population and generation, apart from F₂ generation from Guatemala where 100 replicates were used.

Population   origin	Average life span (days ± SE)
	F2		F5		F7		F9
	Average	Maximum	Average	Maximum	Average	Maximum	Average	Maximum
Kenya	39.2 ± 2.2 a	81	36.9 ± 2.2 a	82	42.6 ± 1.9 a	71	41.4 ± 2.0 a	74
Portugal	60.2 ± 3.4 a	130	52.3 ± 4.7 a	150	46.6 ± 4.2 ab	140	38.1 ± 2.6 b	94
Greece	59.8 ± 3.3 a	108	51.4 ± 2.7 a	99	54.5 ± 1.9 a	78	52.0 ± 3.0 a	87
Hawaii	31.9 ± 1.8 a	69	28.5 ± 1.3 a	56	31.5 ± 1.5 a	72	27.5 ± 1.5 a	61
Guatemala	33.9 ± 1.7 a	73	33.9 ± 2.7 a	89	37.0 ± 2.4 a	88	33.1 ± 2.4 a	85

Averages within rows followed by the same letter are not significantly differed (log-rank test; P > 0.05)