Female sexual maturity
Female gonad size was significantly associated with chromosome 01 and
none of the other three adaptive regions in the WFA♀ collection (Table
1, Fig. 2). This finding is concordant with Parker et al. (2019) who
also resolved a significant association between female gonad size and
chromosome 01. The average gonad sizes associated with genotypes at
candidate SNP Etr_464 (chromosome 01) were 25 g, 20g, and 18g for the
AA, AC, and CC genotypes, respectively (Fig. 3a). While gonad mass was
less in the Klamath River collection, categorizations by genotype were
consistent (average egg mass of 13 g, 7 g, and 6 g for the AA, AC, and
CC genotypes at Etr_464, respectively; Parker et al. 2019).