Research Information System
Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi, vol.25, no.2, pp.501-515, 2023 (Peer-Reviewed Journal)
Salema, Sarpa salpa (Linnaeus, 1758), is a herbivorous fish species of the family
Sparidae. It is an important predator of benthic algae, especially seagrass Posidonia
oceanica. Due to excessive herbivorous behaviour, ecological importance becomes more
significant than economical value. Thus, the aim of this study was to contribute scientific
knowledge of Salema stock distributed around North Aegean Sea, Turkey with reveal age
structure, growth, mortality, and exploitation rates. For this purpose, a total of 412
specimens, varied between 10.2 cm and 38.0 cm TL in length were obtained by
commercial gill net fisheries monthly. The length-weight relationship (LWRs) was
calculated as W=0.01898*TL2.883 (r2=0.97), and growth type was determined as negative
allometric in all sexes. The von Bertalanffy growth parameters were calculated as
L∞=41.6 cm, K=0.21 y-1
, and t0=-1.50 y, and the total mortality (Z), natural mortality
(M), fishing mortality (F), and exploitation rate (E) were calculated as 2.04, 0.44, 0.81,
and 0.65, respectively. The fishing mortality optimum reference point (Fopt), fishing
mortality limit reference point (Flim), optimum exploitation rate (Eopt) and the length
where the maximum yield can be obtained (Lopt) were calculated as Fopt=1.02,
Flim=1.36, Eopt=0.44, and Lopt=28.6, respectively.