Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

Selectivity is a fishing gear characteristic capable of catching fish specific size and species from the existing population distribution. Mesh one important factors that influence gillnets’ selectivity, because different length-classes are caught by them. This report focuses on selectivity two mesh sizes gillnets (8.89 cm 10.16 cm) mackerel's catch constructing gillnet in Sungailiat waters. Experimental methods analysis were used for gear’s more selective preparation, if largest ratio's value at fork length (L) high standard deviation (S) closer to 1. It concluded be S 0.999267194 (L=54.95 cm), with larger 0.997096071 (L=66.55 Sizes 8.89 cm, respectively.