Mortality of red mullet (Mullus barbatus Linnaeus, 1758) on the Montenegrin shelf (South Adriatic)
Joksimovic, A., University of Montenegro, Kotor (Montenegro). Institute of Marine Biology | Regner, S., Institute for Multidisciplinary Research, Belgrade (Serbia) | Gacic, Z., Institute for Multidisciplinary Research, Belgrade (Serbia)
Red mullet, Mullus barbatus, is an economically very important species in trawl fisheries in the Adriatic sea. Material for analysis was collected from October 2002 until May 2004 with a bottom trawl net from commercial trawlers on the Montenegrin shelf. Mortality of this species was analyzed for the first time in this area, separately for males and females and both species together. Until now, only the spacial distribution and catch per unit of effort (CPUE) of Mallus barbatus have been studied in Montenegrin waters. Estimated total mortality rates were Z(males)=0.653 and Z(females)=0.712. The average mortality rate for both sexes was Z(m+f)=0.749, while the natural mortality rate was M(m+f)=0.342. Values of Z in Montenegrin shelf are considerably lower than Z values for the Croatian and Italian parts of the Adriatic Sea, indicating that on the Montenegrin shelf fishing of this species is significantly less intensive than in other trawl-fishing areas of the Adriatic Sea.
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