Figure 1

Mortality profiles. (a) POP 1 (fry)—number of mortalities observed per day over the course of the challenge, from 18 days post challenge (2 June 2010—prior to which mortalities were negligible) to the challenge termination date (11 August 2010). The peak in mortalities was observed 28 days post challenge. For all analyses in POP 1, mortalities between dates 5 June 2010 (21 days post challenge) and 4 August 2010 (51 days post challenge) were assumed to be due to PD, and the mortality profile within this time frame is indicated by the dotted red lines. (b) POP 2 (post-smolts)—number of mortalities observed per day over the challenge duration. The peak in mortalities occurred on day 13 post challenge. Further analyses in POP 2 were conducted using mortalities which occurred 7 days post infection; these mortalities are highlighted by the dotted red lines. (c) POP 1 (fry)—the number of full-sibling families across the 150 full-sibling families with a given percentage mortality. Family mortality ranged from 0 to 100%, with an average mortality of 61%. These families were used to estimate the heritability of resistance to PD. (d) POP 2 (post-smolts)—total number of full-sibling families with a given percent mortality. Family mortality ranged from 5 to 100%, with an average family mortality of 62%.