Valves of the ostreid bivalve Ostrea edulis (Linnaeus, 1758) were analyzed by visual sclerochronology based on internal growth lines and umbonal ridges, along with the calcitic chalky lenses deposited below the adductor muscle scars. The lenses are herein proposed for the first time as a tool for a quick age determination. The analysis revealed ages of 5 to 7.5 years, consistent with shells’ dimension. A Von Bertalanffy growth curve, markedly different from published analogous ones, showed that shell height alone is not a valid proxy for age determination. The adopted sclerochronological method is advised for the age assessment of oyster settlement on human artifacts on the seafloor
Negri, M., Corselli, C. (2016). A sclerochronological analysis on the Mediterranean bivalve Ostrea edulis (Linnaeus, 1758): a combination of morphological evidences. JOURNAL OF CONCHOLOGY, 42(3), 91-103.
A sclerochronological analysis on the Mediterranean bivalve Ostrea edulis (Linnaeus, 1758): a combination of morphological evidences
CORSELLI, CESARE
2016
Abstract
Valves of the ostreid bivalve Ostrea edulis (Linnaeus, 1758) were analyzed by visual sclerochronology based on internal growth lines and umbonal ridges, along with the calcitic chalky lenses deposited below the adductor muscle scars. The lenses are herein proposed for the first time as a tool for a quick age determination. The analysis revealed ages of 5 to 7.5 years, consistent with shells’ dimension. A Von Bertalanffy growth curve, markedly different from published analogous ones, showed that shell height alone is not a valid proxy for age determination. The adopted sclerochronological method is advised for the age assessment of oyster settlement on human artifacts on the seafloor
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
