Results from GLMs of the effects of salinity and parasitic status on hatchability of eggs laid by Sigara lateralis within a week, using a Binomial error distribution and logit link (0 = did not hatch; 1 = hatched).

Salinity treatments were of 0.5. 5. 10 and 15 g/l) plus control water from the collection site (0.8 g/l). Parasitized individuals were infected by a single Hydrachna skorikowi. Estimates for “parasitized” and “0.5 g/l” are not included because they were aliased, but they are effectively zero.