Figure 2

Larval settlement (%) in response to three hot aqueous extracts of Porolithon onkodes: (1) crude hot aqueous extract, (2) large molecular weight extract (> 100 kDa), and (3) small molecular weight extract (< 100 kDa). Box plots identify the median and interquartile range of settlement; whiskers are 1.5 times the interquartile range and outlying points are identified. Background shading identifies the family to which each species belongs. Only species that spawned in November 2018 were used in settlement trials with size-fractionated hot aqueous extracts. Dotted horizontal lines at 10 and 50% represent theoretical thresholds for low and high settlement, respectively. Between 4 and 15 replicate wells per treatment were tested in each assay. See Table 3 for more details.