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Age, growth and mortality of the spotted flounder (Citharus linguatula Linnaeus, 1758) in the Aegean Sea
V. Vassilopoulou, C. Papaconstantinou

A study was conducted on the age, growth and mortality of the spotted flounder (Citharus linguatula Linnaeus, 1758) collected in the Aegean Sea in 1990. The ages of the oldest male and female were estimated to be 5 and 7 years respectively. The observed mean lengths-at-age of the two sexes differed significantly for age groups >l year. Back-calculated lengths-at-age revealed that the greatest growth occurred during the first year of life; significant differences were then exhibited between the growth rates of the two sexes, resulting in a greater maximum age of females. Females >l40 mm in length were heavier than males of the same size; both sexes grew allometrically. Mortality rates (total and natural instantaneous mortalities) of males were higher than those of females. Differences in growth rates of the two sexes and dominance of females in age groups >l year were attributed to the earlier onset of maturity in the males.

Keywords: Spotted flounder, age, growth, mortality, Aegean Sea.
Contents of this volume Sci. Mar. 58(3) : 261-267 Back PDF
 
 
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