Fig. 2 in The life history strategy of a fur seal hookworm in relation to pathogenicity and host health status

Fig. 2. Hookworm prevalence, egg shedding and abundance of larvae in the soil are correlated with adult females and pup density. (a) Prevalence reach over 90% when pups are between 20 and 30 days old, then substantially decline and by 75 days-old on average, all pups have cleared hookworm infection. Numbers in parenthesis indicate sample size. Bars represent binomial confidence intervals (b) Mean fecal hookworm egg count follow a similar curve with the highest number of eggs being shed when the number of adult fur seal females in the rookery is still high, between December 30 and January 15th, when pups are on average 15 to 30 days-old. (c) The soil from areas of the rookery with higher pup density had larger numbers of hookworm larvae (GLM, X2 = 1303, df = 3, P = 2.2 × 10−16). Whiskers represent 95% confidence intervals.