The Effect of Sacculina upon the Fat Metabolism of its Host

The following appear to be the most salient points that can be deduced from the evidence cited above:(1) that infection by Sacculina induces the maintenance of an abnormal quantity of fat in its host's liver and blood;(2) that this condition resembles that found in normal females and males preparing for the moult and in sexually mature females, the ultimate destination of the fat being functionally similar in the case of the mature females and the infected crabs;(3) that in all probability the ultimate fate of the infected crab is death from starvation, arising from its inability to obtain enough fatty material for itself and its parasite;(4) that a pink-coloured lipochrome is found in the blood of moulting and infected animals of both sexes, while a rich yellow characterises that of the sexually mature female.