Age, growth, and population structure of the smooth clam Callista chione in the eastern Adriatic Sea

Table 1 Gulland–Holt equations estimated from measurements of shell growth in Callista chione shell sections

Study area	Gulland–Holt equation	r ²	k year⁻¹	H _∞	L _∞	ø′
Rab Island	Y = 6.595 − 0.100X	0.514	0.11	65.8	85.9	2.87
Pag Bay	Y = 11.734 − 0.231X	0.816	0.23	50.8	66.7	3.01
Kaštela Bay	Y = 11.358 − 0.211X	0.699	0.21	53.8	70.7	3.02
Cetina estuary	Y = 19.088 − 0.316X	0.791	0.32	60.1	78.6	3.29

r ² coefficient of determination; Von Bertalanffy growth parameters estimated from Gulland–Holt equation: k growth constant (k year⁻¹); H _∞ asymptotic height (mm); L _∞ asymptotic length (mm) calculated from the shell length and shell weight relationship; ø′ growth performance index

ISSN: 1438-3888