Otolith Characteristics Of Annular Seabream (Diplodus Annularis) In The Northern Aegean Sea, Turkey.


5th INTERNATIONAL OTOLITH SYMPOSIUM, Mallorca, Spain, 20 - 24 October 2014, pp.167

  • Publication Type: Conference Paper / Full Text
  • City: Mallorca
  • Country: Spain
  • Page Numbers: pp.167
  • Istanbul University Affiliated: Yes



In this study, some population parameters and relationship of otolith sizes-fish length of 372 annular sea bream caught from northern Aegean Sea (Gökceada Island) have been investigated. Fish samples were obtained from a survey conducted for selectivity by gill and trammel nets (inner mesh sizes 16, 18, 20,22, 26, 28, 30 and 32 mm (bar length)) in the northern Aegean Sea (coastal waters of Turkey) from March 2004 to February 2005. Samples were collected at depths of <30 m.

Total length and weight of the fishes were ranged from 7.7 to 17.7 cm (mean 13.02±0.11 cm) and 5.28-86.30 g (mean 24.91±0.91 g) respectively. Length, width, area, thickness and weight of sagittal otoliths from 264 samples were measured. Length of all otoliths ranged 2.81–7.36 mm, width 1.87–6.12 mm, area 4.31-22,86 mm2, thickness 0.58-1.73 mm, weight 0.0043–0.0409 g.  Right and left otolith measures were evaluated separately. Total length and otolith length (TL-OL), total length and otolith width (TL–OWH), total length and otolith weight (TL–OWT), fish weight and otolith weight relationships of annular sea bream were defined by regression analysis.

The total length was directly proportional to weight, with a relationship of W=0.0078TL3.271 for females, W=0.0071TL3.305 for males, and W=0.0068TL3.315 for all samples. Positively allometric growth was observed in all individuals. b value found in this study are similar with results of another researches carried out in Aegean Sea.