Fig. 2.

Thermal tolerance plots showing percent mortality in S. purpuratus gastrulae and 4-arm plutei after 1-h heat shock from adults from FC (gastrulae, n = 2; 4-arm plutei, n = 3 where hereafter n represents the number of male–female pairs spawned for each batch of embryos and larvae); SC (gastrulae, n = 3; 4-arm plutei, n = 3); SB (gastrulae, n = 3; 4-arm plutei, n = 4); and ER (gastrulae, n = 3; 4-arm plutei, n = 4). Error bars indicate standard error of male–female pair replicates