Fig 1.
Allometric measurements for (a) carapace length and (b) chela length on preserved, sponge-dwelling shrimp. Measurements in millimeters were taken along the line shown using ImageJ.
Fig 2.
Conceptual path diagram showing the hypothesized directional relationships among variables.
The sign of the proposed relationship is given and color coded: (positive/negative, +/-, black/red).
Fig 3.
Results of structural equation models with variance explained (R2) for each pathway.
The sign of the correlation is color coded (positive/negative, +/-, black/red) and arrow size is scaled by strength of the standardized path coefficients (S1 Table). Solid paths are significant (p ≤0.05) and dotted paths are non-significant.
Fig 4.
Relationship between eusociality index and bivariate correlation of chela mass and egg number.
Recovered from the structural equation models representing the trade-off between reproduction (egg number) and defense (chela mass). Error bars represent +/- 1 standard error of the mean. The dashed line is the (non-significant) predicted fit from a simple linear regression.