Morphometric Variation among Four Local Ruditapes decussatus Populations in Monastir Bay (Eastern Coast, Tunisia)

HIGHLIGHTS Ruditapes decussatus from four sites belonging to Monastir bay (Tunisia) was first time analyzed based on morphometry and comparative statistics. The site of Ksiba distinguishable other by larger heavier specimens. sub-trapezoidal shape dominant with small- size classes, in most sites. principal component analysis (PCA) revealed different population groups, two intra-population groups for Sokrine site. Allometric relationships showed highly significant correlation growth patterns (positive allometric, negative allometric isometric).