highly significantP < 0.001
Isolation by distance Mantel tests revealed a highly significant ( P < 0.001) pattern of IBD for both alewife ( r = 0.73) and blueback herring ( r = 0.71) across their US range.
Isolation by distance Mantel tests revealed a highly significant ( P < 0.001) pattern of IBD for both alewife ( r = 0.73) and blueback herring ( r = 0.71) across their US range.
For blueback herring, changes in mean length showed marginally significant differences among stocks ( F 3, 13 = 2.861, P = 0.078), with the Southern New England and Mid-Atlantic Stocks declining more steeply than the Northern New England and Southern Atlantic Stocks (although Tukey's HSD did not reveal any pairwise differences to be significant) ( Fig. 5 C; Fig.