Naslov
Growth and longevity of Glycymeris nummaria (Linnaeus, 1758) from the eastern Adriatic, Croatia

Autori
Peharda, Melita ; Crnčević, Marija ; Bušelić, Ivana ; Richardson, Chris ; Ezgeta-Balić, Daria

Izvornik
Journal of shellfish research (0730-8000) 31 (2012), 4; 947-950

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
age; Bivalvia; growth lines; Glycymerididae; Mediterranean

Sažetak
Growth and longevity of Glycymeris nummaria were determined from samples of shells, collected monthly by SCUBA divers between January and December 2010, from Mali Ston Bay, eastern Adriatic Sea. Acetate peel replicas of the shell margin (marginal increment analysis) and hinge region of the shell were used to validate an annual periodicity of growth lines and to determine shell age respectively. Obtained results indicate that G. nummaria forms a narrow growth line after February, when seawater temperatures are at a minimum. Growth lines, visible in the hinge region of all the shells, were used to estimate the age of seventy six G. nummaria and provided an estimate of maximum longevity of the species at 20 year. Construction of a Von Bertalanffy curve using shell length at age data produced a value of L∞ = 71 mm, the growth parameter K of 0.11 year-1, and t0 of -3.736. The growth performance index was 2.74.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Biotehnologija

POVEZANOST RADA