Figure Legends
Figure 1. Map of observation locations for mitochondrial (A: π,
B: Hd ) and nuclear (C: He )
genetic diversity. Populations were binned into 3° latitude x 3°
longitude hexagons and the mean genetic diversity within each hexagon is
plotted. Rug plots on the x- and y-axes illustrate the latitudinal and
longitudinal sampling locations.
Figure 2. Relationship between absolute latitude and genetic
diversity (A: mitochondrial π; B: mitochondrialHd ; C: nuclear microsatelliteHe ). Grey line represents the predicted
relationship based on the mixed effects model with shaded 95%
confidence intervals. Green violin plots show the distribution of
genetic diversity binned every 10°, with the dark green points
representing the medians in every 10° band.
Figure 3. Relationship between longitude and genetic diversity
(A: mitochondrial π; B: mitochondrial Hd ; C:
nuclear microsatellite He ). Gray line represents
the predicted relationship based on the mixed effects model with shaded
95% confidence intervals. Blue circles represent median diversity
binned every 10° with median average deviation (MAD) error bars.
Figure 4. A-C: Relationship between mean sea surface
temperature (SST) (A, B, C) or mean chlorophyll (D, E, F) and genetic
diversity (A, D: mitochondrial π; B, E: mitochondrialHd ; C, F: nuclear microsatelliteHe ). Black line represents the predicted
relationship based on the mixed effects model with shaded 95%
confidence intervals. Rug plots on the x-axis illustrate the SST or
chlorophyll sampling extent. Mean chlorophyll is plotted on a common
logarithm scale.
Table 1. Mitochondrial DNA (π and Hd )
model results for latitude and longitude. Model coefficients are
reported, along with ΔAIC compared to the null model (model AIC - null
AIC). For the null models, AIC is also reported in parentheses. The top
model (with the lowest AIC) is bolded, while the null model is
highlighted in grey. For longitude, the b-spline basis function
coefficients are reported (1-3).