Abstract
Age, growth, sex ratio, and mortality were analysed for saddlead bream collected in the eastern Adriatic from June to August in 1993 and 1994. The slopes ( b values) of the total length–weight regressions, which differ significantly between sexes, indicate positive allometric growth for females ( b=3.123) and isometric growth for males ( b=3.017) ( N=5341). Fish aged 1–11 years were present in the samples ( N=1729). Growth in length for both sexes was expressed using the Bertalanffy equation, L t =34.13(1−exp(−0.208( t+0.750))). Females grew slower ( K=0.201) than males ( K=0.233). The overall ratio was 1:1.20 in favour of females ( P<0.05). Males were dominant in length classes 11.0–20.0 cm, females in length classes 21.0–33.0 cm. All individuals larger than 29.3 cm were female. Total and natural mortality were Z=1.08 years −1 and M=0.47 years −1. The exploitation rate, E=0.56, revealed a high fishing pressure on the stock in the studied area.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.