| Popis: |
This study was carried out to determine the effect of different fishing methods on gillnets selectivity. A total of 20 operations were performed on the shores of Canakkale province by applying stationary set and drive in fishing methods with gillnets which have 20, 22, 23, 25 mm mesh sizes. As a result of these operations, 976 Bogue (Boops boops) were caught. Just after the length and weight values were measured, selectivity analyses were performed. According to results, optimum catch lengths were calculated for gillnets which mesh sizes are 20, 22, 23 and 25 mm as 16.25 cm, 17.87 cm, 18.68 cm, 20.31 cm for the setting method and 19.13 cm, 21.04 cm, 22 cm, 23.91 cm for the drive-in fishery method, respectively. Therefore, optimum catch lengths for the drive-in fishery method were found 3 - 3.5 cm higher than the stationary setting method. The results of the research showed that the fishing method considerably effects gillnets selectivity. |
