Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae

BMC Ecology

Table 2 Broad-sense heritability for life-history traits of Sitobion avenae clones from moist, semiarid and arid areas

Traits	Moist area clones under WW		Semiarid area clones under IS		Arid area clones under SS
Traits	G1	G5	G1	G5	G1	G5
DT1	0.333	0.402*	0.467**	0.396*	0.400*	0.426*
DT2	0.500*	0.300	0.571**	0.212	0.333	0.376
DT3	0.200	0.401*	0.452*	0.337	0.403*	0.327
DT4	0.500*	0.189	0.316	0.560**	0.200	0.441*
DT5	0.353	0.356	0.644**	0.571**	0.429*	0.452*
Fecundity	0.014	0.501**	0.592**	0.522**	0.751***	0.745***
Weight	0.018	0.468**	0.738***	0.568**	0.590**	0.455*

DT1–DT4 the developmental time of 1st to 4th instar nymphs, DT5 the total developmental time of nymphs, WW well-watered treatment, IS intermediate water stress, SS severe water stress, G1 generation one, G5 generation five; the statistical significance of broad-sense heritabilities evaluated with likelihood-ratio tests (LRTs); *P < 0.05; **P < 0.01; ***P < 0.001

ISSN: 1472-6785