Fig. 1. Hydrocarbon (HC) content of the hemolymph, ovaries and first and second egg cases. Hydrocarbon content was determined by gas chromatography. Inset: time course of the reproductive cycle, represented by oocyte length; oviposition occurs on day 9 and pregnancy follows. The images represent a vitellogenic female (left) between days 0 and 8 and a ‘pregnant’ female (right) between days 9 and 28. Values are means ±1 S.E.M.; some error bars are obscured by the symbol. N=7 for each mean except on day 7, where N=5, and day 8, where N=9.