SIZE SELECTIVITY OF SORTING GRID FOR COMMON PANDORA (PAGELLUS ERYTHRINUS (LINNAEUS, 1758)) IN THE GULF OF ANTALYA, EASTERN MEDITERRANEAN

ÖZVAROL Y.

SCIENTIFIC PAPERS-SERIES D-ANIMAL SCIENCE, cilt.59, ss.336-341, 2016 (ESCI) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 59
  • Basım Tarihi: 2016
  • Dergi Adı: SCIENTIFIC PAPERS-SERIES D-ANIMAL SCIENCE
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
  • Sayfa Sayıları: ss.336-341
  • Anahtar Kelimeler: sorting grid, size selectivity, Common pandora, Antalya gulf, Eastern Mediterranean, BOTTOM TRAWL SELECTIVITY, COD-END SELECTIVITY, AEGEAN SEA, CODENDS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Size selectivity of sorting grid was studied for Common pandora in the Gulf of Antalya. Trawling's were carried out in October - December 2012, with a traditional bottom trawl net (600 mesh around the mouth). The fish totally retained in upper codend (catches) and bottom codend (escapes) were used to estimate the selectivity. Selectivity data analyzed as covered cod-end method by means of a logit function of Maximum Likelihood Method. The Kolmogorov - Smirnov test (KS - test) was applied in order to determine the difference between size groups of escapes and catches codends. The percentages of the total catch in terms of weight were 56% retained and 44% escaped. Mean L-50 value of common pandora was calculated as 14.47 +/- 0.27 cm. Total weight of common pandora caught in hauls was 29.937 kg. The results confirm that using sorting grid fixed mesh codend gave higher L-50 value than size selectivity studies with different mesh size and shapes.