An allometric analysis of juvenile fluted giant clam shells (Tridacna squamosa L.)

To explore potential allometric relationships in juvenile giant clams, Tridacna squamosa, log-transformed shell dimensions were regressed against the logarithm of shell length. Results indicate that shell height and vertical shell height are negatively allometric; possibly a strategy to enhance stability in high water energy environments. Anterior length also exhibits negative allometry; in this case growth may be constrained by contact with the substrate. Shell width, right-valve width, posterior length, scute length and scute width show positive allometry, and could contribute to increased survival as both greater overall width and larger scutes are known to reduce predation.