[Change of the weight/ foot area coefficient in relation to aggregation in Tarebia granifera].

Objective: To analyze specimens dispersion in a population of Tarebia granifera and its relationship with the change of morphometric parameters.

Methods: Two samplings by parcels including two types of substrata in opposite aggregation conditions were carried out, and the specimen abundance was compared between both samplings and substrata. The samples were stratified into classes according to shell height and for each of these the coefficient weight/foot-area was calculated and correlated with class size.