A theoretical morphologic analysis of bivalve ligaments

摘要: Abstract A theoretical morphologic model defining ligament formation in the Bivalvia is introduced. It based on spacing of a lamellar layer, fibrous and relative growth rate expanding with respect to enlargement ligamental area. Most diverse patterns bivalve ligaments are successfully modeled by computer simulations. Wide intraspecific variation pattern observed an arcid species, Tegillarca granosa. This appears be consequence allometric change morphogenetic parameters during growth, adjusted maintain relationship between strength shell weight. The distribution actual ligaments, which does not fill morphospace, shows potential evolutionary pathways ligaments. Thus, it implies phylogenetic relationships types from viewpoint formation.