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. 2016 Feb 24;14(2):e1002388. doi: 10.1371/journal.pbio.1002388

Fig 2. Fitness and fitness components in the ancestor high-salt normoxia-adapted population.

Fig 2

(A) The natural logarithm of the growth rate of the high-salt-adapted population (ancestral to the populations used in the present study) across the four possible maternal–offspring hatching environments. Over one full life cycle, ln growth rate is an estimate of the absolute fitness with positive values indicating that the population would grow exponentially with unlimited resources. (B) The fecundity of hermaphrodites deprived of oxygen during embryogenesis is not affected relative to normoxia rearing condition. (C) Embryo hatchability to the L1 stage after anoxia exposure is severely hampered, independently of maternal hatching environment. (A–C) We employed linear mixed-effect models (LMM) [56], taking sample thawing block as a random factor and maternal hatching treatment, in the case of fecundity, or maternal and offspring hatching treatments, in the case of growth rate and hatchability, as fixed factors (see Materials and Methods for further details). Planned contrasts were then done with post-hoc Tukey t tests [57] and LMM-corrected Kenward-Roger (KR) degrees of freedom [58]: * p < 0.05, *** p < 0.001. Data deposited in the Dryad repository: http://dx.doi.org/10.5061/dryad.56bb4 [59].