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Fig. 1. (A) Experimental estradiol injection protocol to determine the pattern of
vitellogenin production in response to the treatment. (B) Experimental
injection and resting metabolic rate (RMR) protocol to determine the potential
metabolic cost of yolk precursor production. The numbers represent the days
into the treatment, with the white sections symbolizing daytime and dark
sections symbolizing night-time. The arrows represent either RMR measurement,
injection or blood sampling time.