bathymetric distribution, seasonal growth and mortality of the deep-water rose shrimp Parapenaeus longirostris (Decapoda: Penaeidae) in an unexploited stocks in Saros Bay, Aegean Sea (original) (raw)

To describe the growth, mortality and distribution pattern of the deep-water rose shrimp, Parapenaeus longirostris in an unexploited resource, 301 trawl surveys were conducted between 20 and 465 m water depths from February 2005 to September 2008 in Saros Bay, Aegean Sea. Bathymetrical biomass distribution of the deep-water rose shrimp shown a clear tendency towards the deeper waters with highest biomass estimations exceeding 50 kg h-1 obtained in water depths between 201 and 300 m. Von Bertalanffy Growth (VBG) parameters were estimated from monthly Carapace Length (CL) frequency distribution data using three different methods: ELEFAN, PROJMAT and SLCA. For the data of this study, the seasonal VBG parameters obtained from ELEFAN was considered to best describe the growth pattern and were estimated as L∞ = 34.7 mm, K = 1.05 year-1, to = -0.95 year, WP = 0.87 (i.e., November) and C = 0.47 for females and as L∞ = 27.0 mm, K = 1.49 year-1, to = -0.88 year, WP = 0.35 (i.e., May), C =...

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